10/05/2026
Dear khas family,
Dr. Keshar Kumar Luitel Becomes First from Sikkim to Earn PhD in Earth Science on Himalayan Landslides
Dr. Keshar Kumar Luitel from Sikkim has successfully completed and defended his Ph.D. in Geology at the Department of Geology, Government Arts College (Autonomous), Salem, affiliated to Periyar University, Tamil Nadu. With this achievement, he has become the first researcher from Sikkim to earn a doctorate in the Earth Science discipline through a study focused on landslides and subsidence in the Eastern Himalayas.
His Ph.D. thesis titled, “Integrated Study on Estimation of Slip Surface in Landslide/Subsidence Areas by Geological, Geotechnical and Geophysical Approach in Eastern Himalayas Region, Gangtok, East Sikkim, India,” focused on understanding the causes of landslides and unstable slopes in East Sikkim. The study used geological observations, soil testing, and geophysical methods to identify vulnerable zones and improve landslide prediction.
The Public Viva-Voce Examination was held on 08 May 2026 at Government Arts College (Autonomous), Salem. The research work was appreciated by the examiners for its importance in disaster management and safe development in hilly regions.
The external examiner was Dr. K. Srinivasamoorthy, Professor and Head, Department of Earth Sciences, Pondicherry University, Puducherry. The research was carried out under the guidance of Dr. V. Thirukumaran, Associate Professor and Research Supervisor, Department of Geology, Government Arts College (Autonomous), Salem.
The study highlights the importance of proper monitoring, scientific investigation, and the use of modern technologies such as Electrical Resistivity Tomography (ERT), Ground Penetrating Radar (GPR), and Geographic Information System (GIS). Along with the understanding of local geology and geotechnical parameters, these methods provide better clarity on slope instability processes and help in reducing landslide risks and planning suitable mitigation measures in the Himalayan region.
Dr. Luitel’s achievement is a matter of pride for Sikkim and the Earth Science community. His research is expected to support future studies, disaster management planning, and environmental safety measures in mountainous regions.
Dr. Luitel expressed his heartfelt gratitude to his research guide, teachers, colleagues, family members, and all those who supported him throughout his academic journey.He also expressed sincere gratitude to the Government of Sikkim for granting him the opportunity and support to pursue his Ph.D. research while serving in the department.
