Geometric similarity of the twin collapsed glaciers in the west Tibet

Two adjacent glaciers collapsed consecutively in the Western Xizang Autonomous Region, China, on July 17 and September 21, 2016, presumably triggered by relatively intensive climate change in this region, leading to massive downstream ice and mud avalanches. After these twin glacier collapses, there...

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Autores principales:	Hu Wentao, Yao Tandong
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	glacier collapses oggm geometric similarity fréchet distance western tibetan plateau glacier centerlines Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/7d07623760564a418aec4f54c1520f34
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spelling	oai:doaj.org-article:7d07623760564a418aec4f54c1520f342021-12-05T14:10:49ZGeometric similarity of the twin collapsed glaciers in the west Tibet2391-544710.1515/geo-2020-0316https://doaj.org/article/7d07623760564a418aec4f54c1520f342021-11-01T00:00:00Zhttps://doi.org/10.1515/geo-2020-0316https://doaj.org/toc/2391-5447Two adjacent glaciers collapsed consecutively in the Western Xizang Autonomous Region, China, on July 17 and September 21, 2016, presumably triggered by relatively intensive climate change in this region, leading to massive downstream ice and mud avalanches. After these twin glacier collapses, there have been many researches, which mainly focus on the physical characteristics of these two glaciers while lack the differences between them and the other glaciers. In this study, the geometric features and energy distribution along the glacier centerlines are investigated to identify the differences between these two collapsed glaciers and other glaciers in the western Tibetan Plateau. The anomaly of climate change is presumed to be the trigger of the twin glacier collapses in accordance with existing research results, whereas in this study, the striking geometric similarity between the centerlines of the twin glaciers, which is quantitatively interpreted by the Fréchet distance among the glacier centerlines, unearth some novel mechanisms. The essential point in these new mechanisms is the energy distribution along the glacier centerlines. A hypothesis based on the principle of energy conservation is derived to demonstrate the mechanisms and dynamic processes of the glacier collapses. Furthermore, on the basis of the geometric similarity and energy distribution of the glacier centerlines, a risk assessment of glacier collapse in the western Tibetan Plateau is implemented to facilitate glacier disaster prevention.Hu WentaoYao TandongDe Gruyterarticleglacier collapsesoggmgeometric similarityfréchet distancewestern tibetan plateauglacier centerlinesGeologyQE1-996.5ENOpen Geosciences, Vol 13, Iss 1, Pp 1463-1475 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	glacier collapses oggm geometric similarity fréchet distance western tibetan plateau glacier centerlines Geology QE1-996.5
spellingShingle	glacier collapses oggm geometric similarity fréchet distance western tibetan plateau glacier centerlines Geology QE1-996.5 Hu Wentao Yao Tandong Geometric similarity of the twin collapsed glaciers in the west Tibet
description	Two adjacent glaciers collapsed consecutively in the Western Xizang Autonomous Region, China, on July 17 and September 21, 2016, presumably triggered by relatively intensive climate change in this region, leading to massive downstream ice and mud avalanches. After these twin glacier collapses, there have been many researches, which mainly focus on the physical characteristics of these two glaciers while lack the differences between them and the other glaciers. In this study, the geometric features and energy distribution along the glacier centerlines are investigated to identify the differences between these two collapsed glaciers and other glaciers in the western Tibetan Plateau. The anomaly of climate change is presumed to be the trigger of the twin glacier collapses in accordance with existing research results, whereas in this study, the striking geometric similarity between the centerlines of the twin glaciers, which is quantitatively interpreted by the Fréchet distance among the glacier centerlines, unearth some novel mechanisms. The essential point in these new mechanisms is the energy distribution along the glacier centerlines. A hypothesis based on the principle of energy conservation is derived to demonstrate the mechanisms and dynamic processes of the glacier collapses. Furthermore, on the basis of the geometric similarity and energy distribution of the glacier centerlines, a risk assessment of glacier collapse in the western Tibetan Plateau is implemented to facilitate glacier disaster prevention.
format	article
author	Hu Wentao Yao Tandong
author_facet	Hu Wentao Yao Tandong
author_sort	Hu Wentao
title	Geometric similarity of the twin collapsed glaciers in the west Tibet
title_short	Geometric similarity of the twin collapsed glaciers in the west Tibet
title_full	Geometric similarity of the twin collapsed glaciers in the west Tibet
title_fullStr	Geometric similarity of the twin collapsed glaciers in the west Tibet
title_full_unstemmed	Geometric similarity of the twin collapsed glaciers in the west Tibet
title_sort	geometric similarity of the twin collapsed glaciers in the west tibet
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/7d07623760564a418aec4f54c1520f34
work_keys_str_mv	AT huwentao geometricsimilarityofthetwincollapsedglaciersinthewesttibet AT yaotandong geometricsimilarityofthetwincollapsedglaciersinthewesttibet
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Geometric similarity of the twin collapsed glaciers in the west Tibet

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