Ashim Sattar

Ashim Sattar
Indian Institute of Science | IISC · Divecha Centre for Climate Change

DST Inspire Faculty @ IISc Bangalore; Former Postdoc @ University of Zurich and Uni. of Dayton, Ohio, USA; Scientific consultant UZH- Mountain Hazards

About

23
Publications
17,340
Reads
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512
Citations
Citations since 2017
21 Research Items
510 Citations
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Introduction
Currently working as DST Inspire Faculty at Divecha Centre for Climate Change, IISc Bangalore. Former Postdoctoral Researcher @ University of Zurich, former postdoc-NASA funded at the Department of Geology and Environmental Geosciences, University of Dayton, USA. My research focuses on climate impact on the Himalayan Cryosphere, remote sensing-based glacier modeling, and assessment of high mountain hazards and risks.
Additional affiliations
October 2022 - present
Indian Institute of Science
Position
  • DST Inspire Faculty
Education
May 2015 - October 2019
Indian Institute of Technology Roorkee
Field of study
  • Glacier related hazards

Publications

Publications (23)
Article
Full-text available
Glacial lake outburst floods (GLOFs) are a major concern throughout High Mountain Asia, where societal impacts can extend far downstream. This is particularly true for transboundary Himalayan basins, where risks are expected to further increase as new lakes develop. Given the need for anticipatory approaches to disaster risk reduction, this study a...
Article
Full-text available
Glacial lake outburst floods (GLOFs) are among the most concerning consequences of retreating glaciers in mountain ranges worldwide. GLOFs have attracted significant attention amongst scientists and practitioners in the past 2 decades, with particular interest in the physical drivers and mechanisms of GLOF hazard and in socioeconomic and other huma...
Article
Full-text available
Glacial lake outburst floods (GLOFs) are a great concern for the Himalaya, as they can severely damage downstream populations and infrastructures. These floods originate at high altitudes and can flow down with enormous energy and change the terrain's existing morphology. One such devastating event occurred on the night of 5 July 2016, from the inc...
Preprint
Full-text available
Glacial lake outburst floods (GLOFs) are among the most concerning consequences of retreating glaciers in mountain ranges worldwide. GLOFs have attracted significant attention amongst scientists and practitioners in the past few decades, with particular interests in the physical drivers and mechanisms of GLOF hazard, and socioeconomic and other hum...
Article
Full-text available
In this study, we examine glacier retreat and associated processes in the Lejiamayu valley, central Cordillera Blanca, Peru (9.27 • S; 77.48 • W) since the Last Glacial Maximum (LGM). Based on detailed mapping of well-preserved moraines, we reconstruct glacier extent during the LGM, the Antarctic Cold Reversal (ACR) and the Little Ice Age (LIA), be...
Conference Paper
Full-text available
The Hindu-Kush-Himalayan region is home to numerous glacial lakes. Some of these lakes could fail and produce hazardous Glacial Lake Outburst Floods (GLOF). GLOFs are primarily triggered by an avalanche or a rockfall entering the lake that generates an overtopping displacement waves. In the present study, we investigate the susceptibility of all la...
Preprint
Full-text available
Glacial lake outburst floods (GLOFs) are a major concern throughout High Mountain Asia, where impacts can be far-reaching. This is particularly true for transboundary Himalayan basins, where risks are expected to further increase as new lakes develop. Given the need for anticipatory approaches to disaster risk reduction, this study aims to demonstr...
Article
Full-text available
A deadly cascade A catastrophic landslide in Uttarakhand state in India on February 2021 damaged two hydropower plants, and more than 200 people were killed or are missing. Shugar et al. describe the cascade of events that led to this disaster. A massive rock and ice avalanche roared down a Himalayan valley, turning into a deadly debris flow upstre...
Article
Full-text available
The Teesta basin in Sikkim Himalaya hosts numerous glacial lakes in the high altitude glacierized region, including one of the largest and the fastest-growing South Lhonak Lake. While these lakes are mainly located in remote and unsettled mountain valleys, far-reaching glacial lake outburst floods (GLOFs) may claim lives and damage assets up to ten...
Conference Paper
Widespread retreat of glaciers has accelerated over recent decades in most mountain regions as a consequence of global warming, leading to rapid expansion of glacial lakes, bringing related risks.When water is suddenly released, Glacial Lake Outburst Floods (GLOFs) can devastate lives and livelihoods up to hundreds of kilometres downstream of their...
Article
Full-text available
Climate change-driven retreat of glaciers is producing thousands of glacial lakes across mountain regions. These lakes generally grow, coalesce into larger lakes that may produce increased downstream hazards and risks due to glacial lake outburst floods (GLOFs). This study assesses such hazards of Lower Barun Lake located near Mount Everest, Nepal....
Article
This study assessed spatiotemporal changes at Gya Glacier, the associated development of a proglacial lake, and reconstructed the 2014 outburst flood that struck Gya Village in the Trans-Himalayan region of Ladakh, India. This study analyzed and for the first time successfully reconstructed a Glacial Lake Outburst Flood (GLOF) event in the Trans-Hi...
Article
Kolkata Metropolitan Area (KMA) is one of the most densely populated areas in the world, where extreme precipitation events result in frequent waterlogging and flood inundation conditions which can adversely affect the city. In this study, we evaluate the nature and trend of annual- maximum precipitation events by employing suitable Global Circulat...
Article
Full-text available
Climate change has led to the formation of numerous high-altitude lakes of glacial origin in the Himalaya. Safed Lake is one of the largest glacial lakes, located at an elevation 4882 m a.s.l. in the state of Uttarakhand, central Himalaya, India. A temporal analysis of the lake surface using satellite imagery shows that the lake has grown more than...
Article
Full-text available
The article was published with the citation “Worni et al. (2012)”. The author group of the article would like readers to know that this information should instead read/be as follows: “Worni et al. (2013)”—Worni R, Huggel C, Stoffel M (2013) Glacial lakes in the Indian Himalayas—from an area-wide glacial lake inventory to on-site and modeling based...
Article
Full-text available
The existence of numerous lakes in the higher reaches of the Himalaya makes it a potential natural hazard as it imposes a risk of glacial lake outburst flood (GLOF), which can cause great loss of life and infrastructure in the downstream regions. Hydrodynamic modeling of a natural earth-dam failure and hydraulic routing of the breach hydrograph all...
Article
Full-text available
Himalayan glaciers are a storehouse of fresh water and play a significant role in influencing the runoff through numerous perennial rivers flowing over the Indo-Gangetic plains, providing freshwater to the second largest populated country in the world. For suitable management of this water resource, measurement of glacier-ice volume is extremely im...
Article
The presence of glacial lakes in the Himalaya makes it a potential mountain hazard, as catastrophic failure of such waterbodies may lead to high-magnitude glacial lake outburst flood (GLOF) events that can cause significant damage to the low-lying areas. The present study evaluates the hazard potential of the South Lhonak lake located in the state...
Conference Paper
Full-text available
The city of Guwahati is the prime hub for the entire north east India. It is one of the fastest growing cities of India at present day. The immigration of a huge amount of population from the surrounding states is leading to its urban extension. The major growth of the city initiated in the previous decade and is consistent and progressive througho...
Conference Paper
Full-text available
Ahmedabad is among the fastest growing cities of India in the twentieth century. Its growth over the years is not only seen in its economy and infrastructure but also in the lateral expansion of the city limits towards the surrounding rural areas. It is well evident that urbanization has led to the massive growth of the city of Ahmedabad making it...

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Projects

Projects (3)
Project
Current status of glacier-related transboundary hazard in the Himalaya? Transboundary threat in Indian Himalaya? Future risks? Uncertainty? Modeling DRR for glacier-related hazards?
Project
Dear colleagues, we cordially invite you to the take part in the upcoming first global conference and workshop on glacial lake outburst floods organised under the patronage of Glacier and Permafrost Hazards in Mountains (GAPHAZ) standing group Objectives: - Exchange the latest knowledge in GLOF research - Facilitate networking and coordination of effort in GLOF research - Initiate and stimulate discussion on challenges and ways forward For details and updates see: www.gaphaz.org/events