Sunil Kumar De

Prof. Sunil Kumar De

0364 2307930 - 3205

9862009202, 9402142496

desunil@nehu.ac.in, desunil@gmail.com

Faculty members

Prof. Sunil Kumar De

Designation: Professor

Geography

Qualifications:

M.Sc. (C.U.), Ph.D. (C.U.) 

Administrative position(s):

Area of Interest:

  • Environmental Geomorphology; Geomorphological Hazards specially Landslide, Soil Erosion and Fluvial Hazards; River Health

Teaching Experience:

  • Professor, Department of Geography, North Eastern Hill University, Shillong since 28.06.2013
  • Department of Geography and Disaster Management, Tripura University, Suryamaninagar - 799022, Tripura (03.04.2006 -27.06. 2013. Left as Reader)
  • Union Christian Training College, Berhampore, Murshidabad, West Bengal (21.04.2000-02.04. 2006. Left the College as Senior Lecturer)

Honours/Awards/Scholarships:

  1. Elected as the President of the International Association of Geomorphologists (2022-2026)
  2. UGIT’s Excellency AWARD – 2022 in the area of Geography and Geospatial Technologies. Received in the Department of Geography, Bengaluru University on 10.12.2022
  3. Appointed as Distinguished Expert in the Shaanxi Institute of Geological Survey, China-2019
  4. National Scholarship – 1987-‘88
  5. UNESCO Scholarship – 2002
  6. B.S. Memorial Award   - 1986
  7. B.S. Memorial Award   - 1987
  8. P.R. – L. Devi Memorial Award – 1987

Phd/M.Phil Awarded/Supervised

Ph.D.

  1. Mili Jamatia : An Integrated Approach Towards Landslide Hazard Zonation and Mitigation in Kurseong Subdivision of the Darjiling Himalayas (Tripura University) - Awarded on 13.08.2013
  2. Subhendu Ghosh: Evolution and Morphology of Gully Erosion of Lateritic Lands of Paschim Medinipur, West Bengal (Tripura University) – Awarded on 29.12.2014
  3. Goutam Kumar Ghosh: Geo-environmental Appraisal of North District, Sikkim of Sikkim Himalaya with Special Reference to Landslide Hazard (Tripura University) – Awarded 05.03.2015
  4. Prasamita Sarkar: Geomorphic Signatures and Tectonic Settings of Baramura Hill Area in Tripura: A Study on Regional Disaster Management and Planning (Tripura University) – Awarded on 05.03.2015
  5. Shreya Bandyopadhyay: Impact of Human Interference on River Health: A Case Study of The Haora River in Tripura (Tripura University) – Awarded on 05.03.2015
  6. Kapil Ghosh: A Study of Landslide and Related Phenomena through Hazard and Risk Analysis in the Hilly Tracts of Dhalai District, Tripura (Tripura University) – Awarded on 29.04.2015
  7. Sushmita Saha: A Study of The Geohydrological Problems of Khowai and Haora River Basins, West Tripura, India (Tripura University) – Awarded on 13.10.2015
  8. Sushmita Paul: Geomorphic Evolution and Microstructural Evidences of Environmental Changes in the Fold Structures of Eastern Parts of South Tripura (Tripura University) – Awarded on 02.12.2015
  9. Pankaj Roy: Bank Erosion along the Putimari River, Assam (North-Eastern Hill University) – Awarded on 31.05.2017
  10. Arindam Chattopadhyay: Changes in Geomorphic Landscape of Purba Medinipur Coast, West Bengal (North-Eastern Hill University) – Awarded on 30.06.2017
  11. Sudatta Wadader : Landslide and soil erosion in the Lachung river basin, Sikkim and their impact on hydro-morphological characteristics in the lower course of the river (North-Eastern Hill University) – Awarded on 05.12.2019
  12. Rintu Sarkar: Shifts in the course of the lower Teesta River: a geomorphic study (North-Eastern Hill University) – Awarded on 15.12.2020
  13. Sarmistha Mallick: Assessment of River Health: a case study of Ranikhola river, Sikkim (North-Eastern Hill University) – Thesis submitted
  14. Kashmiri Begum: Meander Dynamics of Lower Disang River, Assam (North-Eastern Hill University) - Working
  15. Arindam Chowdhury: Glacial Lake Dynamics and its potential risk assessment of Chhombu Catchment in Upper Tista Basin, Sikkim Himalayas (North-Eastern Hill University) - Working
  16. Subhajit Sarkar: Impact of channel avulsion on the morphology of the lower reaches of the Mahananda River (North-Eastern Hill University) - Working
  17. Sahidul Karim: Role of controlled and uncontrolled catchments on flood dynamics: a study of the Kangsabati River, West Bengal (North-Eastern Hill University) - Working
  18. Ria Naskar: Impact of climate change on the temporal occurrence of landslides in South Sikkim since Late Glacial period (North-Eastern Hill University) – Working
  19. Livi T Ayemi: Anthropogenic Impact on River Health: A Study on Lower Dhansiri River, Dimapur District, Nagaland (North-Eastern Hill University) – Working
  20. Koyel Das: Identification of Suitable Landslide Susceptibility Zonation Technique in Assessing Risk: A Study on the Rani Khola River Basin, Sikkim (North-Eastern Hill University) – Working

M. Phil.

  1. Sovanlal Mukhopadhyay: Dynamics of Braiding Pattern in Lower Course of the Balasan River, West Bengal (North-Eastern Hill University) – Awarded on 28.12.2017
  2. Subhajit Sarkar: Impact of Sand Quarrying on selected parts of the Mahananda River, Siliguri, West Bengal (North-Eastern Hill University) – Awarded on 08.11.2017
  3. Monalisha Mili : Anthopogenic Impact on Geo-environmental changes of the Jiadhal river Basin, Assam (North-Eastern Hill University) - Awarded 19.06.2018
  4. Sahidul Karim: Impact of Panchet Dam on the Health of Damodar River (North-Eastern Hill University) – Awarded on 08.05.2018
  5. Koyel Das: Impact of River Bank Erosion on Land-use/Land-cover along the Lower Reach of the Balasan River, West Bengal (North-Eastern Hill University) – Awarded on 05.07.2019
  6. Livi T Ayemi: Impact of Brick Kilns on Agricultural Land along the Dhansiri River of Dimapur District (North-Eastern Hill University) – Awarded on 15.05.2019

Administrative responsibilities undertaken :

  1. Member, University Disciplinary Council, North-Eastern Hill University (Since 10.11.2021)
  2. Co-opted Member, Internal Complain Committee (ICC), North-Eastern Hill University (Since 07.06.2022)
  3. Head, Department of Geography, North-Eastern Hill University (16 December, 2017-15 December, 2020)
  4. Member, Board of Post Graduate Studies, Department of Geography, North-Eastern Hill University (Since July, 2013)
  5. Member, School Board, School of Human and Environmental Sciences, North-Eastern Hill University (Since July, 2013)
  6. Member, Academic Council, North-Eastern Hill University (Since July, 2013)
  7. Warden, Umngot and Kynrem Hostels (hostel 16 & 15), North-Eastern Hill University (since 08.08.2013)
  8. Head, Department of Geography and Disaster Management, Tripura University (30.07.2010 - 15.10.2012)
  9. Superintendent, P.G. Gents Hall, Tripura University - May, 2007 - June, 2013
  10. Assistant Co-coordinator, IGNOU Tripura University Study Centre (2601)- January, 2009- December, 2010
  11. Coordinator, DST INSPIRE Programme, Tripura University, 2010-2012
  12. Chairman, Tripura University Website Committee (upto 27.06.2013)
  13. Member, Purchase Committee (Science), Tripura University - upto 27.06.2013
  14. Member, Transport Committee, Tripura University - upto 27.06.2013
  15. Member, Seminar and Conference Committee, Tripura University - upto 27.06.2013
  16. Treasurer, Tripura University Teachers Council - 2009-2013
  17. Treasurer, Tripura University Teacher Association (TUTA) - 2008-2013

Academic affiliations 

Positions/Port-folios

  1. President (2022-2026)- International Association of Geomorphologists (IAG/AIG) (www.geomorph.org)
  2. Vice President (2017-2021) - International Association of Geomorphologists (IAG/AIG) (www.geomorph.org)
  3. Secretary General (2013-2017) - International Association of Geomorphologists (IAG/AIG) (www.geomorph.org)
  4. Publication Officer (2009-2013) - International Association of Geomorphologists (IAG/AIG) (www.geomorph.org)
  5. Vice – Chairman (2005-2013) – International Association of Geomorphologists (IAG) Working Group on Geomorphic Hazards (www.geomorph.org/workinggroups/geomhaz).
  6. International Correspondence Secretary – Indian Institute of Geomorphologists (IGI).
  7. EC Member, National Association of Geographers (Delhi) 2022-2024
  8. Regional Representative in the EC of the Institute of Indian Geographers (IIG), Pune 2022-2024
  9. Ex-Member - U.G. Board of Studies in Geography, Kalyani University

Life Membership

  1. European Geosciences Union
  2. The Geographical Society of India, Calcutta
  3. The Indian Institute of Geomorphologists (IGI), Allahabad
  4. The Indian Geographical Society, Madras
  5. The Indian Science Congress Association ( ISCA), Calcutta
  6. Indian Institute of Landscape, Ecology & Ekistics (ILLE), Calcutta
  7. Save the Environment, Calcutta
  8. The Deccan Geographer, Pune
  9. National Association of Geographers (NAGI), Delhi
  10. Indian Institute of Geographers (IIG), Pune
  11. North Eastern Geographical Society
  12. The Geographical Society Of The North-Eastern Hill Region, India
  13. Indian Society of Remote Sensing
  14. Indian Society of Geomatics
  15. Indian Society of Training and Development
  16. Indian Society of Engineering Geology

Research Projects

  • PI: Innovative Research Methods and technologies for the multispatial / multitemporal analysis of landslides in mountain regions, the prevention and awareness of related natural hazards and risks (Ministry of University & Research, Govt. of Italy). 2 Years (2006-’08) Completed in October, 2008
  • PI: National Workshop on Hydrogeomorphic Hazards: Challenges for Science Communication. (Dept. of Science & Technology, Govt. of India) 18-20th November, 2009. Completed
  • PI: “Geo-environmental Appraisal of Haora River- A Brief Report” (Tripura State Pollution Control Board) (Short term project) Jan-March, 2010. Completed
  • PI: “Hydro-geomorphic Status of Haora River, Tripura” (Tripura State Pollution Control Board) (Long term project) March, ’10 - March, ’11. Completed
  • PI: “A study of landslides through hazard zonation, risk analysis and preparation of landslide inventory of Dhalai District in the state of Tripura using RS and GIS techniques” (UGC Major Research Project) 01.02.2010 - 31.12.2012. Completed
  • PI: Hydro-geomorphic Status of Gumti River (Tripura State Pollution Control Board) 01.04.2011- 30.04.2012. Completed
  • PI: Geo-environmental appraisal of Khowai and Manu rivers (Tripura State Pollution Control Board) 01.05.2012- 31.12.2013. Completed

Publications

Peer review journals/Book Chapters

2023

  • Mitra S, Purkait M, Chatterjee A, De SK, Dutta D & Tamang L (2023) Analyzing the role of anthropogenic intervention in reconfiguring the hydromorphology of the sub-Himalayan river systems in India: A comparative assessment between Mahananda-Balason system and Chel-Neora system. Aquatic Sciences, Springer, 85:91, 1-22 (Impact Factor: 2.4)
  • Suman Mitra, Ankana Chatterjee, Sunil Kumar De, Debajit Datta, Lakpa Tamang (2022). Assessing the hydromorphological condition of the Sub-Himalayan Mahananda-Balason system using the hydromorphological quality Index. Advances in Space Research, Elsevier, 71: 3, 1397-1417. https://doi.org/10.1016/j.asr.2022.09.037 

2022

  • Kapil Ghosh and Sunil Kumar De (2022). Evaluation of Hydro-geomorphic Responses to Climate Change in North Sikkim District, Sikkim, India. In A. R. Siddiqui, A. Sahay (eds.), Climate Change, Disaster and Adaptations, Sustainable Development Goals Series, 21-33 https://doi.org/10.1007/978-3-030-91010-5_3
  • Chowdhury, Arindam, De, Sunil Kumar, Sharma, Milap Chand & Debnath, Manasi (2022): Potential Glacial Lake Outburst Flood Assessment in a changing environment, Chhombo Chhu Watershed, Sikkim Himalaya, INDIA, Geocarto International, DOI: 10.1080/10106049.2022.2102219 (IF: 4.889)
  • Turconi, Laura; Tropeano, Domenico; Savio, Gabriele; Bono, Barbara; De, Sunil Kumar; Frasca, Marco and Luino, Fabio (2022). Torrential Hazard Prevention in Alpine Small Basin through Historical, Empirical and Geomorphological Cross Analysis in NW Italy. Land, MDPI, 11, 699, 1-24. https://doi.org/10.3390/land11050699 (IF: 3.905)
  • Bhattacherjee, S., Bandyopadhyay, S., De, S.K. (2022). Significance of Channel Planform Change and Morphometric Indices in the Buri River Basin, India and Bangladesh. In: Bhattacharya, H.N., Bhattacharya, S., Das, B.C., Islam, A. (eds) Himalayan Neotectonics and Channel Evolution. Society of Earth Scientists Series. Springer, Cham., 151-174. https://doi.org/10.1007/978-3-030-95435-2_6
  • Sarkar, Subhajit; Begum Kashmiri and De, Sunil Kumar (2022). Impact of sediment quarrying on the channel morphology of the Upper Mahananda River, West Bengal, India. Annals of the National Association of Geographers of India, 42:1, 213-233 (UGC Care listed journal.)

2021

  • Chowdhury, Arindam; Kroczek, Tomáš; De, Sunil Kumar; Vilímek, Vít; Sharma, Milap Chand and Debnath, Manasi (2021). Glacial Lake Evolution (1962–2018) and Outburst Susceptibility of Gurudongmar Lake Complex in the Tista Basin, Sikkim Himalaya (India). Water, MDPI, 13, 3565, 4-22. https://doi.org/10.3390/w13243565 (IF: 3.530)
  • Chowdhury, Arindam; Sharma, Milap Chand; De, Sunil Kumar, and Debnath, Manasi (2021).  Glacier changes in the Chhombo Chhu Watershed of the Tista basin between 1975 and 2018, the Sikkim Himalaya, India. Earth System Sciences Data, 13, 2923–2944. DOI: https://doi.org/10.5194/essd-13-2923-2021 (IF: 11.333)
  • Das, Koyel; Bandyopadhyay, Sunando and De, Sunil Kumar (2021). Assessing the Impact of Riverbank Erosion on Land Use/Land Cover along the Lower Reach of Balasan River, West Bengal. Journal of Indian Geomorphology, 9, 56-76. ISSN 2320-0731 (UGC Care listed)
  • Karim, Sahidul; Das, Soumik; De, Sunil Kumar (2021). Statistical analysis of annual maximum flows of a controlled river: A study on the Kangsabati River, India. Annals of the National Association of Geographers of India, 41 (2), 234–254.
    DOI: https://doi.org/10.32381/ATNAGI.2021.41.02.2  (UGC Care listed)

2020

  • Mallick, Sarmistha and De, Sunil Kumar (2020). Impact of Human Activities on Water Quality and vice versa on Ranikhola River in Sikkim, India. Indian Journal of Landscape Systems And Ecological Studies, 43(2), 50-68. Published in 2021. ISSN 0971-4170
  • Sen, Subhajit; Mitra, Saptarshi and De, Sunil Kumar (2020), Evolution of Tilla-Lunga Topography, West Tripura, India. In ‘Land Resources: Processes, Degradation and Evaluation (ed. By, H. S. Sharma and S. Padmaja). Concept Publishing Company (P) Ltd, New Delhi. NAGI Series-3,143-159 (ISBN-13:978-93-88937-53-5)
  • Ghosh, Kapil; Ghosh, Goutam Kumar and De, Sunil Kumar (2019): Application of Frequency Ratio Model for Landslide Hazard Zonation of North Sikkim District, Sikkim, India. Geographical Review of India, 81 (4), 330-348 (ISSN: 0375-6386). Published in July 2020 (UGC Care listed journal)
  • Kashmiri Begum; Subhajit Sarkar; Sunil Kumar De (2021). Meander Migration and Cut-off Dynamics of Lower Disang River (Assam, India). Studia Geomorphologica Carpatho-Balcanica, 55, 45–â??69. ISSN 0081-6434. GICID:71.0000.1500.0159 Ghosh, Kapil; Sengupta, Nairita; Manna, Dipanwita and De, Sunil Kumar (2020). Inter-state transmission potential and vulnerability of COVID 19 in India. Short Communication. Progress in Disaster Science, 7, 100114, 1-6. DOI:http://dx.doi.org/10.1016/j.pdisas.2020.100114

2019

  • Sudatta Wadadar, Sahidul Karim, Sunil Kumar De (2019): Assessment of soil loss of the Lachung River Basin, North Sikkim, India using RUSLE. Geographical Review of India, 81 (1), 64-79 (ISSN: 0375-6386)
  • Sunil Kumar De (2019): India-Bangladesh International Border and its socio-economic impact. Balaka, 28(37): 282-290 (ISSN 2230 9381)
  • Shreya Bandyopadhyay and Sunil Kumar De (2019): Gaps in Integrated Water Resource Management in Tripura: examples of human activities on the changing morphology of the Haora River, Tripura, India. In 'Environmental Administration: concepts, issues and challenges (ed. by Chakma, B. R.). B. R. Publishing Corporation, Delhi, pp. 29-38 (ISBN 9789388789011)

2018

  • Saptarshi Mitra, >Amit Bera, >Stabak Roy, >Sunil Kumar De (2018): A Geomorphological investigation of Gurpisey Landslide in Eastern Himalayas, Namchi, South Sikkim. Malaysian journal of tropical geography 44(1&2):1-16 (ISSN 0127-1474)
  • Rintu Sarkar and Sunil Kumar De (2018): Channel pattern analysis of the courses of Teesta with surface morphology of Teesta Megafan. Hill Geographer, XXXIV:2, 73-91 (2018) (ISSN 0970-5023)
  • Sahidul Karim and Sunil Kumar De (2018): Impact of Dam on River Discharge: A Study on the Damodar River, Jharkhand, Journal of Indian Geomorphology, 6,116-124 (ISSN 2320-0731)
  • Shreya Bandyopadhyay and Sunil Kumar De (2018): Anthropogenic impacts on the morphology of the Haora River, Tripura, India. Géomorphologie: relief, processus, environnement, 24:2, 151-166. DoI:  10.4000/geomorphologie.12019 (IF: 0.330)

2017

  • Sahidul Karim and Sunil Kumar De (2017): Changes in channel morphology of Damodar River due to Panchet Dam, West Bengal. Hill Geographer, XXXIII:2 (2017), 17-29, (ISSN 0970-5023)
  • Sunil Kumar De (2017). Landslides and human interference in Darjiling Himalayas, India. Revista De Geomorfologie, 19:44-57. DOI:10.21094/rg.2017.014 (IF: 0.134)
  • Kapil Ghosh and Sunil Kumar De (2017): Delineation of Groundwater Potential in Dhalai District, Tripura. Geographical Review of India, 79 (1):23-35
  • Begum, Kashmiri and Sunil Kumar De (2017): Channel Planform Analysis of Lower Dikhou River, Assam. In Resources and Challenges in North-East India (ed. by. Borthakur, Saikia, L., Al Huda, E.). University of Science and Technology, Meghalaya, pp 77-84 (ISBN: 978-81-244-0444-7)

2016

  • Baryshnikov G.Y., Panin A.V., De S.K. Use of graphic data for scientific tourism in areas of natural disasters: the example of Russian Altai. Proceedings of the International conference “Inter Carto/Inter GIS”. 2016;22(2):137-152. (In Russ.)
  • Olav Slaymaker, Andrei Panin, Mihai Micu and Sunil Kumar De (2016): Special Issue Theme - Geomorphological Hazards: Past and Present. Editorial of the Special Issue of the International Journal of Geohazards and Environment, 2016 2(3): 1-2 (ISSN: 2371-9508). DOI: 10.15273/ijge.2016.03.010
  • Kapil Ghosha, Shreya Bandyopadhyay and Sunil Kumar De (2016): A Comparative Evaluation of Weight-Rating and Analytical Hierarchical Process (AHP) for Landslide Susceptibility Mapping in Dhalai District, Tripura.  In Environment and Earth Observation (Ed. by Hazra, et. al). Springer, Chapter 12. DOI:10.1007/978-3-319-46010-9_12
  • Kuntal Ganguly and Sunil Kumar De (2015): Spatio-temporal analysis of flood and identification of flood hazard zone of West Tripura district, Tripura, India using integrated geospatial technique. Hill Geographer, XXXI:1 (2015), 1-22, (ISSN 0970-5023)
  • Kapil Ghosh, Shreya Bandyopadhyay, Sunil Kumar De (2016): Geophysical Investigation and Management Plan of a Shallow Landslide along the NH-44 in Atharamura Hill, Tripura, India. International Journal of Geohazards and Environment, 2016 2(3): 119-130 (ISSN: 2371-9508). DOI: 10.15273/ijge.2016.03.013
  • Saptarshi Mitra , Srijib Basak , Biswajit Sarkar and Sunil Kumar De (2016): A Note on Kopchey Landslides, Namchi Block, Sikkim Himalayas. Journal of Indian Geomorphology, 4,84-91  (ISSN 2320-0731)

2015

  • Pankaj Roy, Sunil Kumar De (2015): A comparative approach to flood frequency analysis of the Puthimari River in Assam, India. Asian Journal of Spatial Science, 3:90-99 (ISSN: 2347-7636)
  • Saptarshi Mitra, Stabak Roy and Sunil Kumar De (2015): Tourism Industry of Namchi, South Sikkim: an overview. Geographical Review of India, 77 (2): June:2015, 170-181 (ISSN: 0375-6386)
  • Saptarshi Mitra, Bikash Das, Stabak Roy, Sunil Kumar De (2015): Transport network system in Namchi Town of South Sikkim: a geographical appraisal. Geo-Analyst , 5:2, 1-9 (ISSN 2249-2909)
  • Subhajit Sen, Abhijit Santra, Debashis Debbarma, Saptarshi Mitra, Sunil Kumar De (2015): Morphology of Tilla-lunga topography in West Tripura District, Tripura, India. Annals of the National Association of Geographers, India, XXXV:2, 77-93 (ISSN-0970-972X)
  • L. Turconi, D. Tropeano, G. Savio, S. Kumar De, and P. J. Mason (2015): Landscape analysis for multi-hazard prevention in Orco and Soana valleys, North-Western Italy. Nat. Hazards Earth Syst. Sci., 15, 1963–1972. doi:10.5194/nhess-15-1963-2015 (IF 2.52)
  • Subhajit Sen, Sushmita Paul, Saptarshi Mitra, Sunil Kumar De (2015): Assessment of Paleo-seismic condition and deformation of Quartz Tectonite rock in seismo-tectonically active zone, Atharomura Hill, Tripura, India. In Resource Management and Development Strategies: A Geographical Perspective (ed by A. R. Siddiqui and P. K. Singh). Pravalika Publications, Allahabad, pp 131-140 (ISBN 978-93-84292-21-8)

2014

  • Ghosh, K., Bandyopadhyay, S., De, S.K. 2013. Regional Scale Landslide Risk Assessment Using Fuzzy Set Approach: A Case Study on Dhalai District, Tripura. Journal of Indian Geomorphology, 2: 82-90 (published in 2014). ISSN: 2320-0731
  • Sen, Subhajit;  Mitra, Saptarshi,  Debbarma, Chandrani; De Sunil Kumar (2014). Impact of faults on landslide in the Atharamura Hill (along the NH 44), Tripura. Environmental Earth Sciences, Springer, DOI 10.1007/s12665-014-3778-4(ISSN: 1866-6280) (IF: 2.878)
  • Bandyopadhyay, Shreya; Ghosh, Kapil; De, Sunil Kumar (2014): A proposed method of bank erosion vulnerability zonation and its application on the River Haora, Tripura, India. Geomorphology, Elsevier, 224, pp. 111-121  (ISSN: 0169-555X).
    DOI: https://doi.org/10.1016/j.geomorph.2014.07.018  (IF: 2.862)

2013

  • Sen, Subhajit, Mitra, Saptarshi, De, Sunil Kumar (2013): Micro geomorphic pattern of Upper Dupi Tilla Formation within the “Tilla-Lunga” Landform in the Western portion of Tripura fold belt, Tripura India. Hill Geographer, XXIX:1 (2013), 1-13, (ISSN 0970-5023)
  • Bandyopadhyay, Shreya; Saha, Sushmita; Ghosh, Kapil; De, Sunil Kumar (2013): Validation of BEHI Model through field generated data for assessing bank erosion along the River Haora, West Tripura. Earth Science India, Vol. 6 (III), July, 2013, pp. 126-135 (eISSN: 0974 – 8350) Bandyopadhyay, Shreya; Ghosh, Kapil; Saha, Sushmita; De, Sunil Kumar (2013): Channel planform change and detachment of tributary: a study on the Rivers Haora and Katakhal, Tripura, India. Geomorphology, Elsevier, 193:1, pp. 25–35  (ISSN: 0169-555X) (IF: 2.682) Ghosh, Kapil; De, Sunil Kumar; Bandyopadhyay, Shreya; Saha, Sushmita (2013): Assessment of Soil Loss of Dhalai River Basin, Tripura, India using USLE. International Journal of Geosciences, 4:1, pp 11-23 (ISSN 2156-8367)
  • Laura Turconi, Sunil Kumar De, Francesca Demurtas, Luca Demurtas, Bruna Pendugiu, Domenico Tropeano, Gabriele Savio (2013): An analysis of debris-flow events in the Sardinia Island (Thyrrenian Sea, Italy). Environmental Earth Sciences, Springer, 69:5, pp 1509-1521 (ISSN: 1866-6280) (IF: 2.878)
  • Ghosh, Kapil; Bandyopadhyay, Shreya; Ghosh, Goutam Kumar; De, Sunil Kumar (2013): GIS based Landslide Vulnerability Assessment in Dhalai District, Tripura. Journal of Geo-Environment Observer, 2:2, pp 19-25 (ISSN: 2277-6141)
  • Bandyopadhyay, Shreya; Ghosh, Kapil; Saha, Sushmita; Chakravorti, Sumanto; De, Sunil Kumar (2013): Status and Impact of Brick Fields on the River Haora, West Tripura. Transactions, 35: 2, Summer 2013, pp 275-286 (ISSN 0970-9851).
  • De, Sunil Kumar (2013): Impact of Rubber Plantation on Environment: A Case Study of Some selected Areas of Tripura. In Climate Change, Biodiversity and Green Economy (ed by Sharma, H.S.; Padmaja, S.; Sharma, Ganesh). Concept Publishing co. Pvt. Ltd., New Delhi, pp 239-249 (ISBN 13:987-81-8069-995-5)

2012

  • De, Sunil Kumar; Giardino, Marco; Jamatia, Mili (2012): Landslide Hazard Zonation of the Kurseong Subdivision of Darjiling Himalayas using RS and GIS Techniques. In Mapping Hazards and Disasters (ed by Subir Sarkar). SAP DRS-1, Department of Geography and Disaster Management, North Bengal University, pp 173-196 (ISBN978-81-921692-3-1)
  • Ghosh, Kapil; Bandyopadhyay, Shreya; De, Sunil Kumar (2012): Landslide Susceptibility Zonation using Weight-Rating based method in GIS platform: a case study on Dhalai District, Tripura. Indian Journal of Geomorphology, 17 (2), pp 127-145 (ISSN: 0973-2411)
  • Ghosh, Goutam Kumar; Ghsoh, Kapil; De, Sunil Kumar; Joshi, Varun; Ayala, Irasema Alcantara (2012): An inventory of recent (18th September, 2011) earthquake triggered landslides in the Sikkim Himalayas. Journal of Geo-Environment Observer, 1:2, pp 1-12 (ISSN: 2277-6141)
  • De, Sunil Kumar; Saha, Sushmita; Bandyopadhyay, Shreya; Ghosh, Kapil; Bandyopadhyay, Sunando (2012): A quantitative Study of Hydrological Parameters of the Khowai River, Tripura. Indian Journal of Power and River Valley Development, 62: 7-8, pp 102-109 (ISSN: 0019-5537)

2011

  • De, Sunil Kumar; Saha, Sushmita; Bandyopadhyay, Shreya; Ghosh, Kapil, Bandyopadhyay, Sunando (2011): Transformation of wetland- a case study of Brahma Bil in Teliamura Subdivision, West Tripura. Hill Geographer, 27:1-2, pp 18-28 (ISSN 0970-5023)
  • De, Sunil Kumar, Bandyopadhyay, Sunando, Ghosh, Kapil, Bandyopadhyay, Shreya & Saha, Sushmita (2011): Transformation of Wetland at Taidu area of South Tripura District, India. Transactions, 33:2, pp 175-186(ISSN 0970-9851)
  • De, Sunil Kumar & Jamatia, Mili (2011): Landslide Hazard Zonation in relation to some physical parameters: A case study on the hilly tract of the Balasan Basin of Darjiling Himalayas, India. Indian Journal of Geomorphology, 16: 1 &2, pp 111-124
  • De, Sunil Kumar, Bandyopadhyay, Samayita & Jamatia, Mili (2011): Landslides in Tea Gardens: A study on the Kurseong sub-division of Darjeeling Himalayas, India. In Cloud Stone and the Mind: The People and Environment of Darjeeling Hill Area (Ed. by Desai, M. & Mitra, S.). K.P. Bagchi & Co., Kolkata, pp 25-38 (ISBN: 978-81-7074-328-6).
  • De, Sunil Kumar & Bandyopadhyay, Sunando (2011): Morphological signatures of fault lines in an earthquake prone zone of southern Baromura hill, north-east India: a multi source 4 approach for spatial data analysis. A critical review. Environ Earth Science, Springer, 63:437–441. (IF: 2.878)

2010

  • De, Sunil Kumar (2010): A quantitative study of the longitudinal and cross-profiles (1989-1994) of the river Balasan in the Darjiling District of West Bengal. Indian Journal of Geomorphology. 15 (1+2): pp 67-80.
  • Marcella Biddoccu, Laura Truconi, Domenico Tropeano & Sunil Kumar De (2010): Slope Instability and Flood events in the Sangone Valley, Northwest Italian Alps. Studia Geomorphologica Carpatho-Balcanica, Vol. XLIV, 2010: 77–112 PL ISSSN 0081-6434.
  • Turconi, L. , De, Sunil Kumar , Tropeano, D. , Savio, G. (2010): Slope failure and related processes in the Mt. Rocciamelone area (Cenischia Valley, Western Italian Alps). Geomorphology, Elsevier Science, 114 (2010) 115–128. doi:10.1016/j.geomorph.2009.06.012 (IF:2.862)

2009

  • De, Sunil Kumar (2009): Disaster vs. Vulnerable Population: an Alternative Approach; in Development Paradigms and Bottom- Up Approaches, ed. by K.N. Jena and others. Abhijeet Publications, New Delhi; ch. 21, pp 349-358 (ISBN 978-93-80031-12-5)
  • De, Sunil Kumar, Ray, S. & Pal, T. (2009): Physico-economic sustainability of rubber plantation - A Case Study on Bishalgarh subdivision of Tripura State. ed. by K.N. Jena, Globalized India and Developmental Issues. Abhijeet Publications, New Delhi; ch. 18, pp 244-255 (ISBN 978-93-80031-19-4)
  • De, Sunil Kumar, Jamatia, M., Bandyopadhyay, S. (2009) : A Geo-technical investigation of Mirik Landslide, Darjiling Himalayas, in Geomorphology in India, ed. by. H.S. Sharma and V. S. Kale , Prayag Pustak Bhawan, Allahabad. Pp. 207-216. (ISBN 81-86539-78-6)
  • Basu, S. R., De, Sunil Kumar & Bera, B. (2009): Landslides in India; in Geomorphology in India, ed. by. H.S. Sharma and V. S. Kale , Prayag Pustak Bhawan, Allahabad. Pp. 171-198. (ISBN 81-86539-78-6)

2007

  • De, Sunil Kumar (2007): A Study of water resources of the Balasan basin of the Darjeeling Himalayas, India and its conservation; in Indian Journal of Power and River Valley Development, Vol. 57, Nos. 3 & 4, March-April, 2007, pp 122-129

2006

  • Dey, S, De, S.K. & C Debbarma (2006): Natural Urban Lake Ecology of Agartala, North East India; Indian Journal of Geography and Environment; Vol-8, Pp-28-40.

2005

  • Basu, Subhashranjan, Ghosh, Anusuya & De, Sunil Kumar (2005) : Meandering and cut-off of the river Bhagirathi, in Geomorphology and Environmental Sustainability, ed by Kalwar and others, Concept Publishing Co., New Delhi, pp. 20-37.g (ISBN: 81-8069-028-8)

2004

  • De, Sunil Kumar (2004) : “Morphology of Braiding in the River Balasan” – “Indian Journal of Landscape Systems and Ecological Studies ” 27:2, 39-42 (ISSN: 0971-4170)
  • De, Sunil Kumar (2004): “Causes and consequences of landslides in the Balasan basin of Eastern Himalayas”– In Geomorphology and Environment, ed.by Singh, Sharma & De, acb publications, Kolkata, p. 406-414g (ISBN: 81-87500-19-0)

2003

  • Basu, Subhashranjan & De, Sunil Kumar (2003);- “Causes and consequences of landslides in the Darjiling-Sikkim Himalayas, India” – Geographia Polonica, Vol. 76, No. 2, Autumn, 2003, pp. 37-52g (ISSN: 0016-7282)

2001

  • De, Sunil Kumar (2001):- “ Landslides in the Balasan Basin and their control” – In Changing Environmental Scenario of the Indian Suncontinent (ed.by) S.R.Basu, 2001; acb publications, Kolkata, pp. 406-414 (ISBN: 81-87500-09-3)

1998

  • Basu, Subhasranjan & De, Sunil Kumar (1998):- “ Soil-loss and its conservation in the Balasan Basin of the Darjeeling Himalaya” – Geographical Review of India, Vol. 60, No. 3, 1998; pp. 123-137 (ISSN: 0375-6386)

1996

  • De, Sunil Kumar (1996):- “ Anthropogenic transformation and its consequences in the Fluvial process of the Balasan Basin in the Darjeeling Himalaya” – Biswabiksha, Vol. 5, No. 1, 1996; pp. 17-24

1994-95

  • Basu, Subhasranjan & De, Sunil Kumar (1994-’95): - “Ambootia- the biggest landslide of Darjeeling Himalaya- A geographical perspective – Himalaya prasanga, Vol. 18 & 19, 1995; pp. 21-21

1993

  • De, Sunil Kumar & Mukhopadhyay, Anupa (1993): - Urban Landuse of Budge Budge Municipality” – Geographical Review of India, Vol. 55, No. 3, 1993; pp. 62-72 g
  • De, Sunil Kumar (1993): – “Impact of technology on agriculture of Ganrapota, Bongaon, West Bengal”; - Indian Journal of Landscape System and Ecological Studies, Vol. 16, No.1, 1993; pp 25-28

1992

  • Basu, Subhasranjan & De, Sunil Kumar (1992): - “Procuring coal from Lish River Basin and its effect on environment” – Himalaya Prasanga, Vol. 16, 1992; pp. 53-58

Books

  • Sarkar, S. and De, S. K. 2017. Geomorphological Field Guide Book on Darjeeling Himalayas (Series Editor: Amal Kar). Indian Institute of Geomorphologists, Allahabad. 
  • Shreya Bandyopadhyay and Sunil Kumar De (2017): Human Interference on River Health: A Study on the Haora River, Tripura River, India. Springer, 1-218. ISBN 978-3-319-41017-3
  • S.R. Basu and Sunil Kumar De (2008): Issues of Geomorphology and Environment. acb Publications, Kolkata
  • Savindra Singh, H.S. Sharma & Sunil Kumar De* (2004): Geomorphology & Environment, acb Publications, Kolkata. ISBN: 81-87500-19-0

Journal (Editor)

  • Hill Geographer (A UGC-CARE listed bi-annual journal of the Geographical Society of the North-Eastern Hill Region)-Since September, 2019 
  • Indian Geographical Research (Apricus)- Since January, 2022

Journal (Guest Editor)

  • Panin, A., Miciu, M., De, S. K., Slaymaker, O.(2016): International Journal of Geohazards and Environment, 2016 2(3) (ISSN: 2371-9508)

Papers presented in Conferences/Seminars

Within India

  1. 80th Indian Science Congress, Goa (07.01.1993). Presented paper on “Technological Change in Indian Agriculture…. West Bengal, India”
  2. International Seminar on Environmental Hazards and their mitigations – 5th IGI Conference (31.01.1993), Calcutta. Presented paper on “Fluctuation of Water Table and its impact on well irrigation along Ichhamati River Basin, West Bengal”.
  3. National Seminar on Man & Environment, 6th IGI Conference (09.03.1994), Allahabad. Presented paper on “A Study of the Fluvial Dynamics of the River Balasan”.
  4. International Seminar on Environment, sustainable Development and Human Health, B.H.U., Varanasi (15.02.1995). Presented paper on “Anthropogenic transformation and its consequences in the fluvial processes of the Balasan Basin”.
  5. Seminar on Geomorphology and Environmental Management, 9th IGI Conference (30.01.1998), Delhi School of Economics, New Delhi. Presented paper on “Morphology of Braiding in the River Balasan”.
  6. National Seminar on Environment and Sustainable Development, N.B.U. & Sikkim Govt. College (19.09.1998). Presented paper on “Assessment of soil-loss in the Balasan Basin of the Darjeeling Himalayas”.
  7. International Symposium on Changing Environmental Scenario in the South Asia during the Past Five decades (20.12.1998), C.U., Calcutta. Presented paper on “A quantitative study of soil-loss of the Balasan River Basin”.
  8. National Seminar on Geomorphology and 10th IGI conference (06.02.1999), Kurukshetra University, Haryana. Presented paper on “Causes and consequences of landslides in the Balasan Basin of Darjeeling Himalayas”.
  9. National Seminar on Mountain to Ocean; A changing Environmenta Scenario & 11th IGI conference (11.02.2000), N.B.U. Presented paper on “Progressive Changes in the Hydraulic Parameters and their impact on the regime of the River Balasan”.
  10. 12th IGI Conference & International Seminar on Changing environmental Scenario of South Asian Countries (27.12.2000), Dept. of Geog. Calcutta University. Presented paper on “Landslides in the Balasan Basin”.
  11. National Seminar on Geomorphology and Environment & 13th IGI Conference (23.12.2001), Annamalai University, T.N. Presented paper on “Morphology of Mirik Landslide”.
  12. 15th IGI Conference & National Seminar on Environment (19.01.2003), Rajasthan University, Jaipur. Presented paper on “A Few Case studies of landslides in the Balasan Basin of the Darjiling Himalayas”.
  13. Seminar on Assessment and Accreditation for Affiliated Colleges: An Awareness Exercise, (University of Kalyani and NAAC) 22.02.2003.
  14. 16th IGI Conference on Mountain Geomorphology:Multi-Dimensional Approach, IIRS, Dehra Dun, 24-26th Nov.’03. Presented paper on “Anthropogenic impacts on landslides of the Darjiling – Sikkim Himalayas”.
  15. IAG Symposium on Geomorphology and Environment, Dept. of Geography, Calcutta University, 27 – 29th Feb., 04. Presented paper on “A Quantitative Analysis of Bank Erosion of the River Bhagirathi - Hugli”.
  16. UGC-Sponsored Orientation Program (26th July-21st August, 2004). UGC-Academic Staff College, University of Calcutta
  17. 17th IGI Conference, Department of Geography, University of Pune, 29th Nov.- 01 Dec. 2004. Presented paper on “Landslides – the worst disaster phenomena in the Darjiling Himalayas”.
  18. 27th Indian Geographers Meet (IIG), Department of Geography, University of Rajasthan, Jaipur, 15 – 17th January, 2005. Rapported the Plenary Session.
  19. National Seminar on Applied Geography and Application of Remote Sensing and GIS, Dept of Geography, Calcutta University, 04-06th February, 2005. Presented paper on “Estimation of Water Resource in the Balasan Basin of Darjiling Himalayas”.
  20. 18th IGI Conference & National Seminar on Quaternary Climatic Changes and Landflorms, M.S. University, Tirunelveli,, 26-28th Dec. 2005. Presented paper on “Landslides in the Hilly Tracts of Kurseong Subdivisions in Darjiling Himalayas: Natural or Anthropogenic”.
  21. National Methods on Research Methods and Techniques for Sustainable Development in India, ILLE, Kolkata, 25-26th March, 2006. Presented paper on “Geomorphology of Mirik Landslide”.
  22. 19th IGI National Conference on Himalaya to Indian Ocean – Geomorphic Processes and Landscape Change, University of Jammu, December 26-28, 2006. Presented paper on “A Study of landslides in relation to some physical parameters on the Kurseong subdivision of Darjiling Himalayas”.
  23. 20th IGI Conference and National Seminar on Disaster Management, Banaras Hindu University, February, 15-17, 2008. Presented paper on “Landslide Hazard Zonation of the Balasan Basin of Darjiling Himalayas: A Methodology “.
  24. 21st IGI Conference and National Seminar on Geomorphological Hazards: Issues and Challenges, Tripura University, 28th – 30th November, 2008 . Presented papers on: 1. Study of Landslides in the Northern District of Sikkim Himalaya, India (with Gautam Ghosh), 2. Prepatration of Landslide Hazard Zonation Map using BIS Scheme- A Study on the Kurseong Subdivision of Darjiling Himalayas (with Mili Jamatia), 3. Ground Water Arsenic Contamination and Mitigation Programme in Tripura and other states in India (with Proloy O Basu) and 4. Causes of Landslides in tea gardens of Kurseong - Natural or anthropogenic? (with Sushmita Saha & Samayita Bandyopadhyay)
  25. UGC-Sponsored Refresher Course on Environmental Science (23rd Dec. 2008-12th Jan., 2009). UGC-Academic Staff College, University of Burdwan.
  26. UGC-Sponsored Refresher Course on “Methods and Techniques in Geography” ((31st Aug.-20th Sept., 2009). UGC-Academic Staff College, North-Eastern Hill University, Shillong
  27. 22nd National Conference of IGI on Man-Environment Relations, University of Allahabad, 29th – 31st October, 2009. Presented papers on 1. Impact of Rainfall on Hydro-geomorphic Processes - A Case Study on the Balasan River Basin of Darjiling Himalayas (with Mili Jamatia), 2. Spatio-Temporal Analysis of Flood Hazard in West Tripura District (with Kuntal Ganguly), 3. Geo-technical Investigation of Rajapur-1 & 2 Landslides Along Birchandramanu-Manurmukh (Belonia) Road, South Tripura (with Santu Naskar), 4. Arsenic Contamination in Ground Water - A study on Manik Bhander and Kalachari-I Gram Panchayats of Salema Block, Dhalai District, Tripura (with Rahul Bakuli), 5. Impact of Rubber Plantation on Environment - A Case Study on Some Selected Gardens in Bishalgarh Subdivision, Tripura (with Saumi Ray) and 6. Physico-Economic Sustainability of Tea Gardens of Bishalgarh Sub-Division, Tripura (with Tulika Pal).
  28. 4th Session of IAG Working Group on Geomorphological Hazards and International Workshop on Geomorphological Hazards 21-23 rd July, 2010 organized MS University, Tirnelveli. Delivered Special Lecture on “Landslide Susceptibility Zonation of Kurseong Subdivision of Darjeeling Himalayas using RS & GIS Techniques”.
  29. National Seminar on Perspectives of Himalayan Environment organized by Himalaya Samiksha Parishad held in the Department of Geography, University of Calcutta on 30th October, 2010. Delivered Special Lecture on “A Study of Landslides through analysis of Causes and Susceptibility Zoning in the Kurseong Subdivision of Darjiling Himalayas”.
  30. 23rd IGI Conference and National Seminar on Global Environmental Change: Geomorphological Issues and Challenges, Gauhati University, 20-22nd November, 2010. Presented papers on 1. Desiccation of Wetland at Taidu area of South Tripura district (with Kapil Ghosh & Sunando Bandyopadhyay) and 2. A Study of Channel Planform Change of the Khowai River, Tripura (with Shreya Bandyopadhyay, Sushmita Saha & Sunando Bandyopadhyay).
  31. International Conference on Emerging Areas of Chemistry, Tripura University, 12 -14 January, 2011. Presented paper on “Sedimentation of Brahma Beel in Teliamura Subdivision of West Tripura District, India(with Shreya Bandyopadhyay, Kapil Ghosh, Sushmita Saha & Debasmita Bandyopadhyay)”.
  32. 32nd Indian Geographers Meet and International Conference on “Climate Change, Geo-hazards and Disaster Management”, University of Rajasthan, Jaipur, 17-19th January, 2011. Presented paper on “Disappearance of Brahma Beel in Teliamura Subdivision of West Tripura District”
  33. 24th IGI National Conference and Annual Convention on “Coastal Dynamics and Geomorphology” Department of Geology, Anna University, Chennai (19-22nd October, 2011). Presented paper on “Geotechnical Investigation of some individual landslides along NH44 in Dhalai district, Tripura”
  34. UGC Sponsored National Seminar on “Resource Management and Sustainable Development”, East Calcutta Girls’ College, Lake Town, Kolkata (23-24th September, 2011). Delivered Lecture as Invited Speaker on “Transformation of Wetlands: Two Case Studies from South and West Tripura Districts, Tripura”.
  35. UGC Sponsored National Seminar on Social Dimensions of Hazard Management, Hijli College, Kharagpur, WB (4-5th November, 2011). Delivered Special Lecture on “Landslide Hazard Zonation practices in India: a review with global perspective and application of modified BIS technique for preparing the Landslide Hazard Zonation map of the Kurseong Subdivision of Darjeeling Himalayas” as a Resource Person.
  36. UGC Sponsored National Seminar on “Resource Utilization, Land-use vis-à-vis Environmental Impact in India with special reference to Himalayan Foothills”, P.D. Women’s College, Jalpaiguri (26-27 November, 2011). Delivered Special Lecture on “Transformation of Wetlands in Tripura: Two Case Studies”.
  37. UGC Sponsored National Seminar on “Environmental Hazards”, Dumkal College, Basantapur, Murshidabad (6-7th January, 2012). Delivered Lecture as Invited Speaker on “Landslides in Kurseong Subdivision of Darjiling Himalayas”
  38. UGC-SAP DRS-I Seminar on Mapping Hazards and Disasters organized by the Department of Geography and Applied Geography, University of North Bengal (3-4th March, 2012). Delivered lecture as Invited Speaker on ‘A Review of Landslide Hazard Zonation Practices and Landslide Susceptibility Zonation of Kurseong Subdivision of the Darjiling Himalayas using BIS Methodology’. 
  39. International Conference on “Dimensions of Development and Resource Conservation” organized by the Department of Geography, University of Calcutta (10-12th March, 2012). Presented paper on “Geophysical Study of a Shallow Landslide in Atharamura Hill, Tripura”
  40. National Seminar on “Recent Trend in Environmental Research and Management” organized by Netaji Subhas Mahavidyalaya, Udaipur, Gomati, Tripura (8-9 September, 2012). Delivered lecture as Resource Person on “Landslide Hazard/Susceptibility Zonation Practices in India with Special reference to the LHZ Mapping of Dhalai District and Geo-Technical Investigation of Some Individual Landslides along the NH44 in Dhalai District, Tripura”.
  41. 25th National Silver Jubilee Conference of Indian Institute of Geomorphologists (IGI) on “Upgrading Technologies and Degrading Earth’s Environment: Reality or Myth” organized by the Department of Geography, University of Allahabad during 22-24th December, 2012. Presented paper on ‘Landslide Susceptibility Zonation using Weight Rating based method in GIS: a case study in Dhalai District, Tripura”.
  42. Delivered Lecture as Resource Person “Impact of Rubber Plantation on Environment: a Study on Some Selected areas of Tripura, India”5-6th June, 2012 – Rajasthan
  43. Delivered special lecture as Resource Person on “Anthropogenic Impact on Landslides in the Darjiling Himalayas” in the UGC sponsored National Seminar on ‘Contemporary Issues on Environment and Development in India and Adjacent Countries’ organized by the Department of Geography of Kalyani Mahavidyalaya in collaboration with the Department of Environmental Science, Kalyani University, Kalyani, Nadia. 20th and 21th September, 2013.
  44. 35th Indian Geographers Meet and International Conference, 11-13th November 2013. Organised by: Department of Geography, University of Burdwan, West Bengal. Presented Paper on Bank Erosion Hazard Zonation- a proposed method and its application on the River Haora, Tripura, India (with Shreya Bandyopadhyay)
  45. 26th Annual Conference of the Indian Institute of Geomorphologists (IGI) on ‘Dynamics of Earth Surface Processes’, 20-22nd November 2013. Organized by: Department of Geography, M.S. University of Baroda, Vadodara. Presented Paper on Estimation of Soil Erosion and Sediment Yield of the Haora River Basin using Sedimentary Delivery Ratio (SDR) Method (with Kapil Ghosh).
  46. National Seminar on ‘Understanding Hazards and their Mitigation Options”, 28-29th March, 2014. Organized by the School of Sciences, Netaji Subhas Open University, Kolkata. Delivered invited talk on “Human Interference on Landslides in Darjiling Himalayas and their Mitigation”.
  47. International Geographical Union Commission (IGU) Conference on Geohazards, Biodiversity, Resource Sustainability and Mountain Response to Global Change, 4-5 June, 2014. Organized by the Department of Geography and Regional Development, University of Kashmir, Srinagar, India. Deliverd Special Lecture on ‘Landslide Hazard Zonation in North District of Sikkim of
    Sikkim Himalaya’.
  48. UGC Sponsored National Seminar on ‘Application of Modern Techniques for the Management of Contemporary Environmental Hazards and Disasters’, 5-6th September, 2014. Organized by the Department of Geography, Haringhata Mahavidyalaya, Subarnapur, West Bengal. Delivered lecture as resource person.
  49. UGC Sponsored National Seminar on ‘Population, Urbanization and Changing State of Environment’, 11-12 September, 2014. Organized by the Department of Geography, Birpara College, Birpara, Jalpaiguri, West Bengal. Delivered lecture as resource person.
  50. 27th Annual Conference of the Indian Institute of Geomorphologists (IGI) on ‘Geomorphology and Geospatial Technology in Environmental Management and Societal Development’, 14-17th November, 2014. Organized by the Department of Geography and Environmental Management, Vidyasagar University, Medinipur, West Bengal. Presented 3 papers as Co-author and Chaired a Technical Session.
  51. 36th Indian Geographers Meet and “International Seminar on Environmental Changes and Challenges: Local, Regional and Global Perspectives”, February 25-28, 2015. Organized by the Department of Geography, Gauhati University, Assam. Chaired two sessions on ‘Geomorphological, Hydrological and Pedological Patterns’ and Social and Cultural Patterns and Processes in Geography’.
  52. Delivered invited lecture on ‘Human Interference on Landslides in Darjiling Himalayas’ in the UGC DRS-III Seminar (20-21 March, 2015), in the Department of Geography, Delhi University, Delhi on 20th March, 2015.
  53. Presented paper on "Regional Scale Landslide Risk Assessment and Proposed Management plan-A Case study on Dhalai District, Tripura" in the UGC-SAP-DRS-III, Department of Geography, Gauhati University organized National Seminar on 'North-East India: Society and Environment' during 29-30 March, 2016.
  54. Delivered lecture as invited speaker on 'Landslides and human intervention in Darjiling Himalayas and their mitigation' in the UGC sponsored National Seminar on 'Natural Hazard and Disaster: special emphasis on cyclone and flood in West Bengal' in the Department of Geography, Vivekananda Mahavidyalaya, Haripal, West Bengal on 09.10.2015
  55. International Conference on Urbanization and Regional sustainability and 47th Annual Seminar of Regional Science Association, Department of Geography, University of Calcutta, 28-30 January, 2016. Chaired the Plenary Session - III.
  56. Delivered lecture on "Impact on Rubber plantation on Environment: A study on some selected areas of Tripura, India" as Invited Speaker in the UGC Sponsored National Seminar on "Climate Change: Issues and Challenges to Society, Environment and Development" organized by the Department of Geography, Haringhata Mahavidyalaya during 23-24 September, 2016.
  57. Addressed the gathering as  the Special Guest in the inaugural session and Chaired the session on "Geomorphological Hazards and Sustainability and Fluvial Geomorphology" of the UGC Sponsored National Seminar on "Environment and Sustainability - A Geographical Perspective" organized by the Department of Geography, Prasanta Chandra Mahalanbis Mahavidyalaya, Kolkata 108 during 18-19 November, 2016.
  58. Addressed the gathering as  the Secretary General of the IAG/AIG in the inaugural session and delivered lecture as Panelist in the Panel discussion - 2 Session on "Himalayan and Sub-Himalayan West Bengal: Geomorphic Problems" in the 29th IGI conference organized by the Department of Geography, University of Calcutta, Kolkata-19 108 during 24-26 November, 2016.
  59. Delivered lecture as invited speaker on "Impact on Rubber plantation on Environment: A study on some selected areas of Tripura, India"  in the 48th Regional Science Conference and International Seminar on 'Rural Habitat, Institutions and Development: Changing Nature and Challenges' organized by the Department of Geography and Disaster Management, Tripura University during January 5-7, 2017.
  60. Delivered lecture as invited speaker on "Landslide Hazard Zonation Mapping of North Sikkim District, Sikkim Himalayas" and Chaired the technical session on geomorphology and hydrology in the 38th Indian Geographers Meet-2017 and National Conference on "Sustainable Earth Resource Management" organized by Banasthali University, Rajasthan during 18-20th March, 2017.
  61. Presented Paper on "Planform asymmetry in meanders pf Lower Disang River, Assam" as co-author and Chaired the technical session on Hydrology and Geomorphology in the 39th Annual Meet and Conferencence of Institute of Indian Geographers (IIG) on Population, environment and ustainable Development organized by the Department of applied Geography, school of Regional Studies and Earth Sceinces, Ravenshaw University, Cuttack-753003 during December 26-28, 2017.
  62. Participated the XXIX Biennial conference of Northeast Geographical Spcoetu (NEIGS) cum XI International Geographical Union (IGU) Commission Seminar on 'Environment and Sustainable Livelihood' organized by the Department of Geography, B. Borooah College, Guwahati, India during 8-10 February, 2018 and delivered two invited lectures: 1. (In Panel session) "Environment and Sustainable Livelihood: Some cases of Concern", 2. "A Criticial Analysis of Landslide Studies in India and Abroad" and Chaired the technical Session on "Natural Hazards and Extreme Events".
  63. Delivered lecture on "Gaps in Integrated Water Resource Management in Tripura: Example of Human Activities on the Changing Morphology of the Haora River, Tripura, India" as a Resource Person and Chaired a technical Session in the two day National Seminar on "Environmental Administration: concepts Issues and Challenges" organized by the Department of Public Administration, Maharaja Bir Bikram University, Agartala during 8th and 10th March, 2018.
  64. Chaired the technical Session TS-4: Water Resoruces, Snow and Glaciers-2 in the Seminar on Advances in Remote Sensing and GIS Applications organized the North-Eastern Space Application Centre, Umiam, Meghalaya during May 10-11, 2018
  65. Delivered Lead Lecture on "Impact of Climate Change on Landslides" and Chaired the technical session on "Coastal Geomorphology -02" in the 30th National Conference of the Indian Institute of Geomorphologists on "Geomorphology, Environment and Society" organized by the Department of Geography, Jamia Milia Islamia, New Delhi during 3-5 October, 2018. Presented 10 scientific papers in different technical sessions as Co-author.
  66. Delivered lead lecture on 'Impact of human activities on the changing morphology of the Haora River, Tripura, India' and Chaired the technical session on "Frontiers of Physical Geography-II" in the 40th Indian Geographers meet 2019 and National Conference on 'Water Sustainability, Livelihood and Climate Change' organized by the Centre for the Study of Regional Development, Jawaharlal Nehru University, New Delhi during March 14-16, 2019.
  67. Delivered Special Lecture on "Impact of Climate Change on Landslides" and Chaired the technical session on "Human-Nature Relationship: An Environmental Quest" in the International Conference on 'Society and Sustainability: An Interdisciplinary Approach' jointly organized by the Department of Geography, Vivekananda College, Kolkata, West Bengal and The Eastern Geographical Society, Bhubaneswar, Odisha during January, 12-13, 2019
  68. Presented a paper on "Impact of Rural Clusters and Urban Slum areas on the River Haora, Tripura" in the National Symposium on "Regional Disparity of Development in South Asia with Special Reference to North-East India" organized by the North-East India Geographical Society, Department of Geography, Gauhati University during October 12-13, 2018
  69. Acted as Resource Person in the National workshop on "Rural Development: Changing Paradigms and Evolving Approaches" organized by the Regional Science Association, India and Department of Geography, University of Calcutta during July 8-13, 2019.
  70. Delivered lecture as a Resource Person and Chaired a technical session in the International Webinar on ‘COVID 19: Issues and challenges on Economy, Politics and Society’ organized by the Department of Public Administration, Maharaja Bir Bikram University, Agartala, Tripura in collaboration with the Directorate of Information Technology, Government of Tripura, Agartala on 29.05.2020.  
  71. Delivered Lecture as a Resource Person on ‘Disaster risk Management in the  Tropics: Geomorphological Perspective’ in the National Webinar on Development and Environment: Emerging Challenges and Issues’ organized by the IQAC, Banipur Mahila Mahavidyalaya on 10.07.2020
  72. Delivered lecture as a Resource Person in the On-line Round Table Conference on ‘Geographical Perspectives pf Water Resources: Issues and Challenges’ jointly organized by the National Association of Geographers, India (NAGI) and Russian Geographical Society (RGS) on 16.07.2020.  
  73. Delivered lecture on ‘Disasters in the  Tropics: Causes and Mitigationas’ as a Resource Person in the International Webinar on Disaster Management organized by Ramakrishna Mahavidyalaya, Kailashahar, Tripura, India 0n 13.08.2020 
  74. Delivered lecture as a Resource Person on ‘Perceptions of natural hazards, disasters, vulnerability and risk’ and Chaired Technical Session – 1 in the Two-day International Webinar on “Innovations in Disaster Risk Reduction: Aiming Towards a Resilient Society” jointly organized by the Department of Geography, Diamond Harbour Women’s University and IGU Commission on Hazard and Risk, International Geographical Union (IGU) during 10-11 September, 2020.
  75. Delivered lecture as an invited speaker on ‘Impact of Human Activities on River Health and Vice Versa: A Study on Haora River, Tripura’ in the Weekly Webinar Series organized by the Save the Environment, New Delhi on 10.10.2020
  76. Delivered talk as the Guest of Honor in the Valedictory function of the XVth International Online Geography Conference of the Deccan Geographical Society, India on ‘Climate Change, Disasters and Sustainable Livelihood’ organized by the Department of Geography, Allahabad University, Prayagraj during 26-28 November, 2020
  77. Delivered lecture as a Resource Person on ‘Geomorphic Hazards: Landsides in Darjeeling Himalayas’ in the State Level Online Short-term Training/Workshop Programmer under the Initiatives for Teaching-Learning Excellence in Geography (GYAN GANGA) on the theme ‘Recent Trends in Geography’ jointly organized by the Commissionerate of College Education, Government of Rajasthan, Jaipur and the Department of Geography, Government Arts College, Kota during 11-16 January, 2021.  
  78. Delivered lecture in the Inaugural Session and Chaired two sessions (Plenary Lecture 1 & Technical Session 5B) in the 32nd IGI Conference and National Seminar on ‘Geomorphology for Human Adaptation to Changing Environment’ organized by the Department of Geography, West Bengal State University during January 21-23, 2021.
  79. Delivered lecture as a Resource Person on ‘India-Bangladesh water Treaty: Farakka Barrage dispute and its impact’ in the National Seminar on ‘Geopolitics and Geo-economics in Contemporary South Asia Region’, organized by the Center for South Asia Studies Department of Geography, Savitribai Phule Pune University, Pune on 22nd March, 2021
  80. Delivered lecture as a Resource Person on ‘India-Bangladesh water Treaty: Farakka Barrage dispute and its impact’ in the National Seminar on ‘Geopolitics and Geo-economics in Contemporary South Asia Region’, organized by the Center for South Asia Studies Department of Geography, Savitribai Phule Pune University, Pune on 22nd March, 2021 Invited lecture on ‘Impact of Human Activities on River Health and Vice Versa: A Study on Haora River, Tripura’ in the International Webinar On “Natural Resource Management & Sustainable Development: North-East Chapter” (17 -18 April 2021) organized by the Department of Geography, Mizoram University, Pachhunga University College Campus, Aizawl, Mizoram, India on 18.04.2021
  81. Plenary lecture on ‘Impact of human activities on the dynamics of braiding in the lower course’ in the National Web Conference on “Environment, Development and Livelihood: Sustaining Earth and People” jointly organized by the Department of Geography, Savitribai Phule Pune University (SPPU), Pune and Institute of Indian Geographers (IIG) during 10th to 12th June, 2021. 
  82. Chaired Plenary Session – I in the 42nd IIG Annual Meet as an International E-Conference on “Geography for People, Planet, Prosperity and Peace” jointly organized by the Department of Geography, Savitribai Phule Pune University (SPPU), Pune and Institute of Indian Geographers (IIG) during 4th to 6th October, 2021. 
  83. Chaired Technical Session 3 in the ‘3rd Annual Meet of the Save the Environment (STE) and Iinternational Conference on Environment, Water, Agriculture, Sustainability and Health (Ewash-2021): United Together in the Battle Against Pandemic’ organized by the Hindu College, New Delhi during 21-22 January, 2022
  84. Invited talk on ‘Progress in Indian Geomorphology’ as the Special Guest and Chaired a technical session in the inaugural session of the 33rd Conference of the Indian Institute of Geomorphologists (IGI) and international webinar on ‘Geomorphology & Environmental Sustainability’ organized by the Department of Geography, Allahabad University during 2-4 December, 2021
  85. Attended the 43rd Indian Geography Congress (NAGI) and National Webinar on ‘Population, Environment, Health, sustainable Development Goals and Appropriate Technologies: Post-Covid-19 Scenario’ organized by the Department of Geography, Banaras Hindu University, Varanasi, UP during 28-30 October, 2021.
  86. Presented two papers on ‘Quantifying the Rapid Expansion and Outburst Susceptibility of Cascading Moraine-dammed lakes in the Sikkim Himalaya: the case of Gurudongmar Lake Complex’ and ‘Risk Analysis of Hydro-Power Projects along the Nagavali River, Odisha-Andhra Pradesh’ in the 10th International Conference on Geomorphology held in Coimbra, Portugal during 12-16 September, 2022
  87. Delivered lecture as the Chief Gust in the inaugural session, Chaired the Young Geomorphologists Session and given lecture as a panellist on ’75 Years of Indian Geomorphology’ in the 34th National conference of the Indian Institute of Geomorphologists (IGI) on ‘Geomorphology, Natural Hazards and Environment’ organized by the Department of Geography, Savitribai Phule Pune University, Pune during November 2-4, 2022.
  88. Keynote Lecture on ‘Application of Geomorphology in Sustainable Engineering Practices: Examples from Hilly Areas’ in EGCON 2022: ‘International Conference on Engineering Geology and Geotechniques for Safe and Sustainable Infrastructures’ organized by the Indian Society of Engineering Geology (ISEG) in Novotel Hotel & Residences during 16-17 November, 2022
  89. Plenary Lecture on ‘Impact of human activities on the changing morphology and water quality of the Haora River, Tripura, India’ in the 43rd IIG Annual Meet and International Conference on “Challenges of Future Earth: Social, Economic and Environmental Sustainability” organized by the Department of Geography, Osmania University, Hyderabad during December 1-3, 2022
  90. Delivered lecture as a distinguished speaker on ‘Impact of Climate Change on Landslides’ in the UGIT’s International Conference on ‘Climate Change: Environmental and Soil Sustainability - Advanced Geospatial Solutions’ held in the Department of Geography, Bengaluru University during 9-11 December, 2022.
  91. Presented paper on ‘Human Interference on River Health’ in the 44th Indian Geography Congress on the theme ‘Climate Change, Water Resource, Agriculture and Sustainable Development’ hosted by the Department of Studies and Research in Geography, School of Applied Sciences, Rani Channamma University, Belagavi during December 19-21, 2022
  92. Lead Lecture on ‘Application of Geomorphology in Sustainable Engineering Practices: Examples from Hilly Areas’ and Chaired the Plenary Session in XVII DGSI (The Deccan Geographical Society of India) International Geography Conference on ‘Monitoring and Management of Indigenous Resources for Self-Reliance and Environmental Sustainability using Geospatial Technology’ held in the Department of Geography, Banaras Hindu University, Varanasi during 25th-27th February, 2023
  93. Chaired a technical session in the Online International Conference on ‘Environment, Water, Agriculture, Sustainability and Health (EWASH-2022): Strategizing a greener future’ & 4th Annual Meet of STE jointly organized by the Save the Environment and Hindu College, University of Delhi, Delhi12-13 during January, 2023

Outside India

  1. VIENNA, AUSTRIA (April 23-28, 2023): Presented poster on ‘Inventory, Classification, Evolution, and Potential Outburst Flood Assessment of Glacial Lakes in the Chhombo Chhu Watershed (Sikkim Himalaya, India)’ in the European Geosciences Assembly held in the Vienna Convention Centre, Austria. Chaired the IAG EC meeting held on 25.04.2023.
  2. COIMBRA PORTUGAL (September 12-16, 2022): Presented two papers on ‘Quantifying the Rapid Expansion and Outburst Susceptibility of Cascading Moraine-dammed lakes in the Sikkim Himalaya: the case of Gurudongmar Lake Complex’ and ‘Risk Analysis of Hydro-Power Projects along the Nagavali River, Odisha-Andhra Pradesh’ in the 10th International Conference on Geomorphology held in Coimbra, Portugal during 12-16 September, 2022
  3. ATHENS, GREECE (September 19-21, 2019): Presented paper on " Impact of human activities on the dynamics of braiding in the lower course of the Balasan River, West Bengal, India” in the Regional Conference on Geomorphology held in the National and Kapodistrian University of Athens, Greece. Presented the report on IAG Working Groups in the IAG (International Association of Geomorphologists) Executive Committee and Council Meetings as Vice President.
  4. YAN'AN, CHINA (April 25-May 1, 2019): Participated the field study in different Danxia Sites in and around Yan'an City of Shaanxi Province as Expert and given Inaugural address in the '4th International Symposium on Red Beds and Danxia Landform and 19th National Academic Symposium on Red Beds and Danxia Landform' held in  Zaoyuan Hotel, Yan'an City. The Symposium was jointly organized by the Yan'an Municipal People's Government and Shaanxi Institute of Geological Survey.
  5. SHAANXI, CHINA (April 25-May 1, 2019): As distinguished Expert in 3rd Joint Scientific Field Investigation on Danxia Landform in Northern Shaanxi (International) organized by Shaanxi Institute of Geological Survey and Yulin Municipal People’s Government.
  6. Yogyakarta, Indonesia (30 July-02 August, 2018): Invited as a Speaker in the Summer Course on Ecosystem based Disaster Risk Reduction in the Tropics in the Faculty of Geography, University of Gadja Mada, Yogyakarta, Indonesia and spoke on Ecosystem based Disaster Risk Reduction in the Tropics: Geomorphological Perspective.
  7. Vienna, Austria (08.04.2018-13.04.2018) - Presented poster on "Impact of Human Activities and vice versa on Ranikhola River, Sikkim, India"  in the European Geosciences Union Assembly held in the Austria International Convention Centre, Vienna. Participated the IAG (International Association of Geomorphologists) Executive Meeting as Vice President (Working Group In Charge).
  8. Yogyakarta, Indonesia (14-27 August, 2017): Invited as a Guest Lecturer to the Summer Course on Ecosystem based Disaster Risk Reduction in the Tropics in the Faculty of Geography, University of Gadja Mada, Yogyakarta, Indonesia and spoke on Disaster Management in the Tropics: Geomorphological Perspective.
  9. Jakarta, Indonesia (14-16 September, 2016):  Delivered lecture as an external expert, to the Center of Natural Resources and Development (CNRD) International Science Policy Workshop on Ecosystem DRR in Urban Areaso held in Jakarta, Indonesia, during 14 to 16 September 2016.
  10. Beijing, China (August 21-25, 2016): Presented paper on "Impacts of Rural Clusters and Urban Slum areas on the River Haora, Tripura" in the 33rd International Geographical Congress (33rd IGC) held in Beijing, China during August 21-25, 2016.
  11. ZHENJIANG, CHINA (21-23 September, 2015): Delivered lecture in the inaugural session as the Secretary General of the IGA/AIG in the 3th International Symposium on Danxia Landform to be held at Jianglangshan, Zhenjiang Province, China, on Sept 21, 2015
  12. BARNAUL, RUSSIA (2-4 July, 2015): Presented paper on 'ANTHROPOGENIC IMPACTS ON THE MORPHOLOGY OF THE HAORA RIVER, TRIPURA, INDIA' and Chaired the session on Geomorphological Hazards in the IAG Regional Conference on Geomorphology on 'Gradualism and Catastrophism in Landscape Evolution' at the Altail State University, Barnaul, Russia.
  13. ABOU DHABI, UAE (10-12 March, 2015): Delivered lecture on Human interference on Landslides in Darjiling Himalayas, India in the University of Paris Sorbonne, Abou dhabi on 11th March, 2015
  14. PADOVA, ITALY (17-22 November, 2014) - International Conference Analysis and Management of Changing Risks for Natural Hazards, 18-19 November, 2014, Padova, Italy. Delivered lecture on ‘Regional Scale Landslide Risk Assessment and Proposed Management Plan - a case study on Dhalai District, Tripura, India’ and Chaired the Session on Geomorpholgical Hazards. Delivered a Lecture for PG Students in the University of Modena, Italy on ‘Geomorpholgical Hazards in Tripura: Some cases of Concern’ on 20th November, 2014.
  15. Vienna, Austria (28.04.2014- 04.05.2014) – Organized the IAG (International Association of Geomorphologists) Executive Meeting at the University of Vienna.
  16. PARIS, FRANCE (25.08.2013-05.09.2013):  Participated the 8th International Conference on Geomorphology, Paris, France. Presented the papers on 1. A proposed method of Bank Erosion Hazard Zonation and its Application on the River Haora as Co-Author,  2. A comparative study between Weight-rating and Analytical Hierarchical Methods of Landslide Susceptibility Zonation and Geotechnical investigation of some individual landslides in Dhalai District, Tripura, India and 3. Landslide Susceptibility in the North District of Sikkim, India as presenting Author.  Chaired the sessions on Geomorphological Hazards.
  17. MEXICO (10.05.2010-19.05.2010): National Autonomous University of Mexico (UNAM) - Scientific Visit as Guest Faculty for teaching students of Post Graduate classes.
  18. Vienna, Austria (02.05.2010-07.05 2010) - Participated the IAG (International Association of Geomorphologists) Executive Meeting and European Geosciences Union Assembly (presented paper on Channel Planform Changes in Tripura).
  19. MELBOURNE, AUSTRALIA (06.07.2009 - 11.07.2009) : Participated the 7th International Conference on Geomorphology, Melbourne, Australia. Presented the papers on 1. “Landslide Hazard Zonation of the Kurseong Subdivision of Darjiling Himalayas using RS and GIS Technique ” and 2. “Landslides Affecting the Slopes of Tea Gardens in Kurseong, Darjiling Himalayas”. Chaired the sessions on Geomorphological Hazards.
  20. ITALY (05.11.2007 – 30.11.2007) – As a Visiting Fellow in the Department of Earth Sciences, University of Turin, Italy in connection with the Bi-lateral Research Project. During such stay special lectures have been delivered in the National Research Council (Earth Science Section), Italy and in the Department of Earth Sciences, University of Modena, Italy.
  21. MALAYSIA (24.06.2007 – 28.04.2007) – Participated the IAG Regional Conference on Geomorphology. Presented the paper on “ A study of landslides through hazard Zonation in the hilly tract of the Balasan Basin of the Darjiling Himalayas” and Chaired a session on Geomorphological Hazards.
  22. HUNGARY (12.09.2005- 19.09.2005) – Participated  the Bilateral Science Exchange Programme between Indian National Science Academy and Hungarian Academy of Sciences and delivered a lecture on “Rapid Urbanization and its impact on the Environment..” in the Institute of Geography, University of Pecs, Hungary.
  23. ZARAGOZA, SPAIN (07.09.2005- 11.09.2005) –Participated 6th International Conference on Geomorphology (Zaragoza, Spain)  to present the paper on “Geomorphology of Mirik Landslide in Darjiling Himalayas”. Selected as the Vice -Chairman of the IAG Working Group on Geomorphological Hazards.
  24. DORNBIRN, AUSTRIA (02.07.2002) : Participated the UNESCO Summer- School Course on “ Alpine and Sub-alpine Environment”  under the Scholarship of UNESCO . Presented an article also on “A comprehensive study on Landslides in the Balasan Basin in the Darjeeling Himalayas” at the IAG Symposium held at Dornbirn, Austria on 14.07.2002.
  25. TOKYO, JAPAN (23.08.2001) :  Participated  the 5th IAG (International Association of Geomorphologists) Conference and Presented the article on- “Causes of landslides in the Balasan basin in the Eastern Himalayas” and participated the field workshop on “Landslides on Himakawa and Ontake region” (29.08.2001) and  delivered a lecture on “Landslides of Darjeeling Himalayas- some case studies”.
  26. RAJSAHI, BANGLADESH (20.11.2000) : Participated  the  9th National Geographical  Conference of Bangladesh National Geographical Association  & Seminar organized by the Department of Geography, Rajshahi University, Bangladesh and Presented the article on “ A study on the Causes and Consequences landslides in the Balasan Basin of Darjeeling Himalayas”.
  27.  DHAKA, BANGLADESH (24.01.1994) : Participated the 39th A.G.M. of Bangladesh Geographical Society and Geographical Conference organized by the Department of Geography, Dhaka University, Bangladesh and Presented the article on “Morphology of Ambootia landslide”

Special / Invited Lectures (apart from Seminar/conferences)

  1. Delivered invited lecture on ‘How to write good research paper in Geography’ in the ICSSR Sponsored Capacity Building Programme for Faculty Members in Social Science organized by Nagindas Khandwala College, Mumbai on 2nd July, 2022
  2. Invited talk on ‘International Geodiversity Day and the IAG with some potential geoparks in India’ in the IAG (International Association of Geomorphologists) Webinar entitled ‘Contributions of Geomorphologists to the International Geodiversity Day’ held on 11.10.2022
  3. Panelist in the workshop on ‘Nurturing Geodiversity: A Road to Sustainable Development’ on the occasion of ‘International Geodiversity Day and 6th international Geoethics day’ organized by the Geological Society of India, govt. of India on 14.10.2023
  4. Invited lecture on ‘Application of Remote Sensing in Geomorphology-Example of channel Planform Change in the Northern Chattagram-Tripura Fold Belt, India’ in the High-end Forum on Innovative Application of Remote Sensing Technology jointly organized online by China Association of Remote Sensing Application, Shaanxi Natural Resources Society, Satellite Remote Sensing Application Center of China-SCO Geoscience Cooperation Research Center on November 25-27, 2022 in Kunming, Yunnan Province.
  5. Inaugural address as the Chief Guest in the inaugural programme of the UGC-HRDC Refresher Course organized by the Department of Geography, University of Allahabad, Prayagraj on 28 November, 2022 followed by a lecture on ‘Recent trends in Geomorphology’
  6. Delivered lecture on ‘How to write good paper in Geomorphology?’ in the Department of Geography, Ashutosh College, Kolkata on 10.02.2023
  7. Delivered two lectures on ‘Causes and consequences of Landslides: Examples from Darjiling Himalayas and Tripura ‘ in the  UGC-HRDC, Calcutta University Short Term Course (STC) on ‘Hazards and Disaster Management’ organized by the Department of Geology, Calcutta University on 02.03.2023Prof. R. N. Dubey Memorial Lecture on ‘Trends in Geomorphology and Human Impact on Braiding Dynamics in the Lower Course of the Balasan River, West Bengal, India’ in the Department of Geography, University of Allahabad, Prayagraj on 15.11.2021
  8. Delivered lecture a Resource Person in the 3rd Faculty Induction Programme organized by the UGC-HRDC, University of Allahabad on 30.01.2021
  9. Delivered lecture a Resource Person on ‘How to a write good scientific paper?’ in the 4th Faculty Induction Programme  to celebrate National Science Day organized by the HRDC, Allahabad University, Prayagraj on 28.02.2021.
  10. Delivered Lecture as a Resource Person in the 2-Week Refresher Course on Environmental Challenges: Natural  Resources and Sustainability’ organized by the Department of Geography and UGC- HRDC, Kurukhetra University, Haryana (INDIA) on 06.03.2021
  11. Delivered Lecture on ‘Landslides in Darjeeling Himalayas’ as a Resource Person in the 2-Week Faculty Development Programme on ‘Earth, Environment and Space Sciences for Mankind’ organized by the Department of Geography, Chaudhary Bansi Lal University, Bhiwani on 27.05.2020.
  12. Delivered lecture as a Resource Person in the National Webinar on ‘Save Earth-Think Globally-Act Locally’ organized by the Department of Geography, D. A. V. College, Kanpur to celebrate the World Environment Day on 05.06.2020.   
  13. Delivered special lecture on ‘How to Write Good Scientific Papers in Geography?’ in the Department of Geography, University of Allahabad on 12.07.2020.
  14. Delivered lecture on ‘River Health’ as an Invited Speaker in the National Webinar organized by the Department of Geography of Ranaghat College held on 11.08.2020
  15. Delivered lecture on ‘Trends in Geomorphological Research and Technologies: Past, Present and Future’ as a resource person in the webinar titled ‘Future Trends of Research in Geographical Studies’ organized by the Department of Geography, Heramba Chandra College in association with the IQAC of Heramba Chandra College. held on 31.08. 2020
  16. Delivered special lecture on ‘Landslides in Darjeeling Himalayas’ in the Department of Geography, University of Allahabad on 13.09.2020.
  17. Invited speech on “River Health’ in the online lecture series organized by the Department of Geography, East Calcutta Girls College, Kolkata on 15.09.2020
  18. Delivered Lecture as a Resource Person in the 1st 2-Week Refresher Course in Environmental Science/Education (October, 2020) organized by the UGC- HRDC, Jamia Milia Islamia, New Delhi-110 025 (INDIA) on 10.10.2020.
  19. Delivered lecture a Resource Person on ‘Hazards of the mountain areas and the need for disaster management’ in the Short Term Course on "Disaster Management and Climate Change" organized by the UGC-HRDC, Utkal University, Bhubaneswar on 18.10.2020.
  20. Delivered Lecture as a Resource Person in the 2nd Refresher Course in Geography organized by the UGC-HRDC, Jawaharlal Nehru University (JNU), New Delhi (INDIA) on 17.11.2020.
  21. Delivered invited lecture on "Environmental Geomorphology and Geomorphological Hazards with special reference to Landslide Hazard" in the Orientation Programme organized by the Department of Earth Sciences, University of Science and Technology, Meghalaya on 12.10.2019
  22. Delivered invited lecture on "Environmental Geomorphology and Geomorphological Hazards with special reference to Landslides in Darjeeling Himalayas" in the Indian Statistical Institute (ISI), Kolkata on 12.07.2019
  23. Delivered 4 (four) Lectures as a Resource Person in the Refresher Course on 'Population, Environment, Development and Sustainability' organized by the UGC- HRDC, University of North Bengal, Darjeeling-734013 during 8-9 July, 2019.
  24. Delivered invited lecture in the Department of Geography, Aliah University, Kolkata on "Environmental Geomorphology with Special Reference to Landslides in Darjeeling Himalayas" on 31.01.2019
  25. Delivered 2 (two) Lectures as a Resource Person in the Refresher Course on Disaster Management organized by the UGC- HRDC, Calcutta University on 04.01.2019.
  26. Delivered 1 (one) Lecture on Landslides: Causes and Remedial Measures in the Refresher Course on Disaster Management organized by the UGC- HRDC, North-Eastern Hill University on 20.11.2018,
  27. Delivered invited lecture in East Calcutta Girls' College, Kolkata on "Geomorphic Hazards with Special Reference to Landslide on 16.04.2018.
  28. Delivered invited lecture for College and University teachers in Ashutosh College, Kolkata on "Techniques in Geomorphology with Special Reference to Landslide on 07.04.2018.
  29. Delivered lecture as a Panelist on "Environment and Sustainable Livelihood: Some cases of Concern" " in the XXIX Biennial conference of Northeast Geographical Society (NEIGS) cum XI International Geographical Union (IGU) Commission Seminar on 'Environment and Sustainable Livelihood' organized by the Department of Geography, B. Borooah College, Guwahati, India during 8-10 February, 2018
  30. Delivered 1 (one) Lecture on Disaster Management in Tropics as a Resource Person in the UGC-HRDC 42nd Orientation Programme in the UGC-HRDC, North-Eastern Hill University 07.03.2018,
  31. Delivered 2 (two) Lectures on Disaster Management and Landslides as a Resource Person in the UGC-HRDC 42nd Orientation Programme in the UGC-HRDC, North-Eastern Hill University 07.02.2018
  32. Delivered 2 (two) Lectures on Disaster Management and Landslides as a Resource Person in the UGC-HRDC Refresher Course in Tribal Studies, in the UGC-HRDC, North-Eastern Hill University 06.02.2018
  33. Delivered Lecture on "Understanding basics of Landslides and Impacts with special reference to residential areas" in the Training Programme of Government officers, teachers and CBOs/NGOs on 'Comprehensive Landslide Risk Mitigation' organized by DDMA, Shillong in collaboration with the Department of Geology, St. Anthony's College, Shillong on 07.04.2017
  34. Delivered Lecture on "Landslide Hazard Mapping" in the Three days Training Programme on Bio-Engineering Measures for Controlling Landslides and Geo-Environmental Issues by Vertiber Grass' organized by NIDM, Ministry of Home Affairs, Govt. of India, New Delhi in collaboration MATI and NEHU during 21-23 February, 2017
  35. Delivered 4 lectures as UGC-SAP DRS-II Visiting Fellow in the Department of Geography, North Bengal University during 28-29th March, 2017
  36. Delivered lecture on: Human Interference on Landslides: in the CCRT, Govt. of India Workshop on "Cultural Education and CCRT's Role" held at Banamanlipur Priyanath Institution (H.S.), Barasat, Kolkata 700124 on January, 12, 2017.
  37. Delivered 4 (four) Lectures as a Resource Person in the UGC-HRDC, North Bengal University organized Refresher Course on "Disaster Management and Environmental Studies" on 4th and 5th November, 2016.
  38. Delivered panel speech in the 'Book Release Function & Two-day National Conference on ICSSR Research Survey and Explorations in Economic Geography' organized by the ICSSR, New Delhi  in the JNU Convention Centre, Auditorium-II, Jawaharlal Nehru University, New Delhi-110067 during 22nd & 23rd March 2016.
  39. Delivered 2 (two) Lectures as a Resource Person in the Refresher Course in Natural Hazards and Disasters organized by the UGC- HRDC, Calcutta University on 05.03.2016.
  40. Delivered the 1st Sabitri Mukhopadhyay Memorial Lecture on 'Geomorphological Hazards in Tripura - some cases of concern' in the Department of Geography, Raja N. L. Khan Women's College, Midnapore 721102 on 14th February, 2016.
  41. Delivered 1 (one) Lectures as a Resource Person in the UGC-HRDC Short Term Course in Research Methodology on 'Statistical Methods for Research', UGC-HRDC, North-Eastern Hill University 16.10.2015
  42. Delivered lecture on Human interference on Landslides in Darjiling Himalayas, India in the University of Paris Sorbonne, Abou dhabi on 11th March, 2015
  43. Delivered 2 (two) Lectures as a Resource Person in the Refresher Course in Adult and Continuing Education organized by the UGC- Academic Staff College, North-Eastern Hill University 28.10.2014.
  44. Delivered 2 (two) Lectures as a Resource Person in the Refresher Course in Adult and Continuing Education organized by the UGC- Academic Staff College, North-Eastern Hill University 28.11.2013.
  45. 2nd Prof. S.R. Basu Memorial Lecture on “Geomorphological Hazards in Tripura: Some cases of Concern”. 22nd February, 2013
  46. Delivered 6 (six) Lectures as a Resource Person in the Refresher Course in Geography organized by the Academic Staff College, North Bengal University, from 3rd - 5th October, 2012
  47. Delivered 3 (three) Lectures as a Resource Person in the Refresher Course on Environmental Studies and Geography (ID) organized by the UGC Academic Staff College, Gauhati University, on 28 January, 2012.
  48. Delivered 3 (three) Lecture as a Resource Person in the Refresher Course organized by the Department of Geography, North Eastern Hill University sponsored by the UGC Academic Staff College, NEHU, during 7-8 November, 2011.
  49. Delivered Lecture as a Resource Person in the Refresher Course organized by the Department of Geography, University of Pune sponsored by the UGC Academic Staff College, University of Pune on 27th November, 2010.
  50. Delivered a Special Lecture on “Spatio-temporal analysis of Landslide hazards: a study on Darjiling Himalayas, India” in the Institute of Geography, National Autonomous University of Mexico (UNAM) on 12.05.2010
  51. Delivered Special Lecture on “Relevance of Geomorphology in Geophysical Hazards” in the Workshop on Disaster Risk Reduction in Tripura (Dec. 12 & 13, 2008) organized by National Disaster Management Authority (NDMA) in collaboration with the Govt. of Tripura.
  52. Special Lecture on ‘Landslides in Darjiling Himalayas’ Consiglio at Nazionale delle Ricerche, Italy on 23.11.2007
  53. Invited Lecture on ‘Causes and Consequences of Landslides in Darjiling Himalayas’ in the University of Modena, Italy on 28.11.2007
  54. Delivered a special lecture on “Soil Erosion- Types, Causes, Mapping and remedial measures” in Magrahat College, South 24-Parganas, West Bengal on the occasion of the Seminar on Hazard & Disaster Management & Mapping held on 07.03.2007
  55. Training of Block Level Master Trainers in connection with Disaster Risk Management (21.02.2005, 24.02.2005 & 07.03.2005) - Normal Relief Section, Murshidabad District, Govt. of West Bengal – Delivered Lecture on “Disaster Scenario of Murshidabad District” (Resource Person).
  56. Delivered lecture (Resource Person) on “Causes and consequences of Flood in Murshidabad District” (22.12.2003) – District level Workshop on Community Based Disaster Preparedness organized by CASA at the Panchayet Training Center, Murshidabad Zilla Parishad
  57. National Disaster Reduction Day Workshop, Murshidabad Dist., Govt. of West Bengal (11.11.2003) - Deliberated (Resource Person) on “Fluvial Geomorphology behind the Flood Hazard”.

ORGANIZATION OF SEMINAR / CONFERENCE / WORKSHOP:

  • Co-Ordinator: Organized the Regional Webinar of the International Geomorphology Week - South and West Asia on 03.03.2022 on behalf of the International Association of Geomorphologists (IAG), 1-6 March, 2022.
  • Convener: ICSSR Sponsored National Webinar on “Mapping Contours of Geography in 21st Century: Challenges Ahead” during 23rd and 24th March 2021. Chairman: Prof. B. S. Mipun,
  • Co-Ordinator: Regional Webinar of the International Geomorphology Week - South and West Asia on 01.03.2021 on behalf of the International Association of Geomorphologists (IAG), 1-6 March, 2021.
  • Convener - 9th International Conference on Geomorphology, Vigyan Bhawan, New Delhi, India during 6-11th November, 2017
  • Coordinator, Refresher Course on Earth Sciences, Geography and Allied Disciplines, organized by the UGC-HRDC, North Eastern Hill University, Shillong during 19.06.2017-09.07.2017.
  • Coordinator, Refresher Course on Earth Sciences and Geography, organized by the UGC-HRDC, North Eastern Hill University, Shillong during 28.11.2016-18.12.2016.
  • Organizing Secretary- 28th IGI Conference and National Seminar on HUMAN IMPACT ON LANDSCAPES (29-31st October, 2015) organized by the Department of Geography, North-Eastern Hill University, Shillong.
  • Organizing Secretary- 46th Regional Science Conference and National Seminar on UNDERDEVELOPMENT OF THE NORTH EAST REGION AND THE INDIAN STATE (6-8 November, 2014) organized by the Department of Geography, North-Eastern Hill University, Shillong.
  • Convener - 33rd IIG (Institute of Indian Geographers) Annual conference and International Seminar on “Population, Development and Disaster Management” (8-11th February, 2012) organized by the Department of Geography and Disaster Management, Tripura University.
  • Convener- Earth Systems Sciences and Disaster Management Sector of 1st Tripura Science Congress. Organized by Tripura State Council for Science and Technology, Agartala, Tripura during September 8-9, 2011
  • Convener - DST, Govt. of India sponsored National Workshop on “Hydro-geomorphic Hazards: Challenges for Science Communication” (18-20th November, 2009) organized by the Department of Geography and Disaster Management, Tripura University.
  • Convener – 21st IGI (Indian Institute of Geomorphologists) Conference and NATIONAL SEMINAR ON “Geomorphic Hazards: Issues and Challenges” (28th – 30th November, 2008), Department of Geography and Disaster Management, Tripura University.
  • Convener - “IAG (International Association of Geomorphologists) Symposium on Geomorphology & Environment and International workshop on Landslides in Darjiling & Sikkim Himalayas” (27.02.2004 – 06.03.2004); organized on behalf of Indian Institute of Geomorphologists (IGI).
  • Convener – U.G.C. Sponsored State Level Seminar on “Flood in West Bengal – Nature , Analysis & Solution” organized by U.C.T. College, Berhampore (22 – 24 the February,2001)

Any other:

President (2022-2026) - International Association of Geomorphologists (IAG/AIG) (www geomorph.org)

2023, North-Eastern Hill University
Designed & developed at Bioinformatics Centre, NEHU