Progressive destabilization and triggering mechanism analysis using multiple data for Chamoli rockslide of 7 February 2021
A catastrophic rockslide occurred on 7 February 2021 in Chamoli area in the high Himalaya. In the absence of field data, multiple satellites data of decade span have been used to investigate and understand the progressive destabilization of rockslide body. A 3D geometric model was developed using ge...
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Online Access: | https://doi.org/10.1080/19475705.2021.2013960 https://doaj.org/article/921a1d7a88844762a72e380f8a43483d |
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ftdoajarticles:oai:doaj.org/article:921a1d7a88844762a72e380f8a43483d 2023-05-15T16:37:29+02:00 Progressive destabilization and triggering mechanism analysis using multiple data for Chamoli rockslide of 7 February 2021 Wenfei Mao Lixin Wu Ramesh P. Singh Yuan Qi Busheng Xie Yingjia Liu Yifan Ding Zilong Zhou Jia Li 2022-12-01T00:00:00Z https://doi.org/10.1080/19475705.2021.2013960 https://doaj.org/article/921a1d7a88844762a72e380f8a43483d EN eng Taylor & Francis Group http://dx.doi.org/10.1080/19475705.2021.2013960 https://doaj.org/toc/1947-5705 https://doaj.org/toc/1947-5713 1947-5705 1947-5713 doi:10.1080/19475705.2021.2013960 https://doaj.org/article/921a1d7a88844762a72e380f8a43483d Geomatics, Natural Hazards & Risk, Vol 13, Iss 1, Pp 35-53 (2022) chamoli rockslide multiple source satellite data geospatial information development process geometric model rockslide triggering Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Risk in industry. Risk management HD61 article 2022 ftdoajarticles https://doi.org/10.1080/19475705.2021.2013960 2022-12-31T11:00:55Z A catastrophic rockslide occurred on 7 February 2021 in Chamoli area in the high Himalaya. In the absence of field data, multiple satellites data of decade span have been used to investigate and understand the progressive destabilization of rockslide body. A 3D geometric model was developed using geospatial information about geology, terrain, and ice cover to understand the triggering mechanism. Several causes are uncovered as: the pronounced long-term change of land surface temperature facilitated local permafrost degradation and led to ice cover shrinking since 2010; the occurrence of ice avalanche nearby in 2016 accompanying with sidewall-to-bedrock fracturing enhanced the ice segregation beneath the rockslide body; and the development of side cracks in early February 2021 led to dropping of side support and percolating of surface water. Heavy precipitation several days before favoured the destabilization, top-corner cracks developing and top-side bergschrund breaking abruptly two days before, and ice strength reduction owing air temperature rising few hours before the event triggered finally the rockslide. The frequent disasters such as cloudburst, extreme precipitation, landslides, and snow avalanches responding to global warming and climate change in the Himalayan region needs immediate attention to the chain-like geohazards and collaborative observation with satellites and other platforms. Article in Journal/Newspaper Ice permafrost Directory of Open Access Journals: DOAJ Articles Geomatics, Natural Hazards and Risk 13 1 35 53 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
chamoli rockslide multiple source satellite data geospatial information development process geometric model rockslide triggering Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Risk in industry. Risk management HD61 |
spellingShingle |
chamoli rockslide multiple source satellite data geospatial information development process geometric model rockslide triggering Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Risk in industry. Risk management HD61 Wenfei Mao Lixin Wu Ramesh P. Singh Yuan Qi Busheng Xie Yingjia Liu Yifan Ding Zilong Zhou Jia Li Progressive destabilization and triggering mechanism analysis using multiple data for Chamoli rockslide of 7 February 2021 |
topic_facet |
chamoli rockslide multiple source satellite data geospatial information development process geometric model rockslide triggering Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Risk in industry. Risk management HD61 |
description |
A catastrophic rockslide occurred on 7 February 2021 in Chamoli area in the high Himalaya. In the absence of field data, multiple satellites data of decade span have been used to investigate and understand the progressive destabilization of rockslide body. A 3D geometric model was developed using geospatial information about geology, terrain, and ice cover to understand the triggering mechanism. Several causes are uncovered as: the pronounced long-term change of land surface temperature facilitated local permafrost degradation and led to ice cover shrinking since 2010; the occurrence of ice avalanche nearby in 2016 accompanying with sidewall-to-bedrock fracturing enhanced the ice segregation beneath the rockslide body; and the development of side cracks in early February 2021 led to dropping of side support and percolating of surface water. Heavy precipitation several days before favoured the destabilization, top-corner cracks developing and top-side bergschrund breaking abruptly two days before, and ice strength reduction owing air temperature rising few hours before the event triggered finally the rockslide. The frequent disasters such as cloudburst, extreme precipitation, landslides, and snow avalanches responding to global warming and climate change in the Himalayan region needs immediate attention to the chain-like geohazards and collaborative observation with satellites and other platforms. |
format |
Article in Journal/Newspaper |
author |
Wenfei Mao Lixin Wu Ramesh P. Singh Yuan Qi Busheng Xie Yingjia Liu Yifan Ding Zilong Zhou Jia Li |
author_facet |
Wenfei Mao Lixin Wu Ramesh P. Singh Yuan Qi Busheng Xie Yingjia Liu Yifan Ding Zilong Zhou Jia Li |
author_sort |
Wenfei Mao |
title |
Progressive destabilization and triggering mechanism analysis using multiple data for Chamoli rockslide of 7 February 2021 |
title_short |
Progressive destabilization and triggering mechanism analysis using multiple data for Chamoli rockslide of 7 February 2021 |
title_full |
Progressive destabilization and triggering mechanism analysis using multiple data for Chamoli rockslide of 7 February 2021 |
title_fullStr |
Progressive destabilization and triggering mechanism analysis using multiple data for Chamoli rockslide of 7 February 2021 |
title_full_unstemmed |
Progressive destabilization and triggering mechanism analysis using multiple data for Chamoli rockslide of 7 February 2021 |
title_sort |
progressive destabilization and triggering mechanism analysis using multiple data for chamoli rockslide of 7 february 2021 |
publisher |
Taylor & Francis Group |
publishDate |
2022 |
url |
https://doi.org/10.1080/19475705.2021.2013960 https://doaj.org/article/921a1d7a88844762a72e380f8a43483d |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
Geomatics, Natural Hazards & Risk, Vol 13, Iss 1, Pp 35-53 (2022) |
op_relation |
http://dx.doi.org/10.1080/19475705.2021.2013960 https://doaj.org/toc/1947-5705 https://doaj.org/toc/1947-5713 1947-5705 1947-5713 doi:10.1080/19475705.2021.2013960 https://doaj.org/article/921a1d7a88844762a72e380f8a43483d |
op_doi |
https://doi.org/10.1080/19475705.2021.2013960 |
container_title |
Geomatics, Natural Hazards and Risk |
container_volume |
13 |
container_issue |
1 |
container_start_page |
35 |
op_container_end_page |
53 |
_version_ |
1766027784162902016 |