The Cryosphere
The Cryosphere
The Cryosphere
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https://doi.org/10.5194/tc-2022-237
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/tc-2022-237
© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.
Preprints
 
13 Dec 2022
13 Dec 2022
Status: this preprint is currently under review for the journal TC.

Brief Communication: Rapid ~335 106 m3 bed erosion after detachment of the Sedongpu Glacier (Tibet)

Andreas Kääb and Luc Girod Andreas Kääb and Luc Girod
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  • Department of Geosciences, University of Oslo, Oslo, 0316, Norway
Received: 29 Nov 2022 – Discussion started: 13 Dec 2022

Abstract. Following the 130 106 m3 detachment of the Sedongpu Glacier (south-eastern Tibet) in 2018, the Sedongpu valley
underwent drastic and rapid large-volume landscape changes. Between 2018 and 2022, and in particular during summer
2021, an enormous volume of in total ~335±5 106 m3 was eroded from the former glacier bed, forming a new canyon of up
to 300 m depth, 1 km width and almost 4 km length. The mass was transported into the Yarlung Tsangpo (Brahmaputra)
River and further. Several rock-ice avalanches of in total ~150±5 106 m3 added to the total rock, sediment and ice volume of
over 0.6 km3 that were exported from the basin since around 2017.

How to cite. Kääb, A. and Girod, L.: Brief Communication: Rapid ~335 106 m3 bed erosion after detachment of the Sedongpu Glacier (Tibet), The Cryosphere Discuss. [preprint], https://doi.org/10.5194/tc-2022-237, in review, 2022.

Andreas Kääb and Luc Girod

Status: open (until 07 Feb 2023)

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Andreas Kääb and Luc Girod

Andreas Kääb and Luc Girod

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Short summary
Following the detachment of the 130 million cubic-meter Sedongpu Glacier (south-eastern Tibet) in 2018, the Sedongpu valley underwent drastic large-volume landscape changes. An enormous volume of in total around 330 million cubic-metres was rapidly eroded, forming a new canyon of up to 300 m depth, 1 km width and almost 4 km length. Such consequences of climate change in glacierized mountains have so far not been considered at this magnitude and speed.
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