Publications

2019 |
Journal Article
GLOFs floods disaster koshi India glacier Koshi basin
Spatio-temporal rainfall variability and flood prognosis analysis using satellite data over North Bihar during the August 2017 flood event

Flooding is one of the most common natural disasters in India. Typically, the Kosi and Gandak river basins are well-known for lingering flood affected basins in North Bihar every year, which lies in the eastern part of India. There were no such comprehensive studies available in North Bihar that discussed flood progression and regression at shorter time-scales like two day intervals.

2019 |
Journal article
KDKH Koshi basin GLOFs
Development of supraglacial ponds in the Everest region, Nepal, between 1989 and 2018

Several supraglacial ponds are developing and increasing in size and number in the Himalayan region. They are the precursors of large glacial lakes and may become potential for glacial lake outburst floods (GLOFs). Recently, GLOF events originating from supraglacial ponds were recorded; however, the spatial, temporal, and seasonal distributions of these ponds are not well documented. We chose 23 debris-covered glaciers in the Everest region, Nepal, to study the development of supraglacial ponds.

2019 |
Journal article
KDKH Koshi basin GLOFs
Cryospheric hazards and risk perceptions in the Sagarmatha (Mt. Everest) National Park and buffer zone, Nepal

Glacial lake outburst floods (GLOFs) are among the most serious cryospheric hazards for mountain communities. Multiple studies have predicted the potential risks posed by rapidly expanding glacial lakes in the Sagarmatha (Mt. Everest) National Park and Buffer Zone of Nepal. People’s perceptions of such cryospheric hazards can influence their actions, beliefs, and responses to those hazards and associated risks.

2018 |
Journal article
KDKH Koshi basin GLOFs climate change glacier
Role of supraglacial lakes in recession of himalayan glaciers: A case study of Dudh Koshi basin, Nepal

Climate change has been adversely affecting glaciers causing them to advance and recession worldwide. Existing studies have primarily attributed temperature as the leading factor causing glacier recession. However, detailed studies that investigate effect of other factors like presence of debris cover, slope, and contact with water bodies are still scarce.

2017 |
Journal article
glacier KDKH Koshi basin GLOFs koshi
Spatial-temporal variations of glacial lakes in the Koshi river basin from 1967 to 2014

Region-wide averaging of Himalayan glacier mass change has masked any catchment or glacier-scale variability in glacier recession; thus the role of a number of glaciological processes in glacier wastage remains poorly understood. In this study, we quantify mass loss rates over the period 2000, 2013, and 2015 for 32 glaciers across the Everest region and assess how future ice loss is likely to differ depending on glacier hypsometry.

2017 |
Journal article
glacier KDKH Koshi basin GLOFs
Modeling the glacial lake outburst flood process chain in the Nepal himalaya: Reassessing Imja Tsho’s hazard

The Himalayas of South Asia are home to many glaciers that are retreating due to climate change and causing the formation of large glacial lakes in their absence. These lakes are held in place by naturally deposited moraine dams that are potentially unstable. Specifically, an impulse wave generated by an avalanche or landslide entering the lake can destabilize the moraine dam, thereby causing a catastrophic failure of the moraine and a glacial lake outburst flood (GLOF).