气候变化领域集成服务门户(CCPortal): Brief communication: Rapid ∼ 335 x 106 m3 bed erosionafter detachment of the Sedongpu Glacier (Tibet)

CCPortal

DOI	10.5194/tc-17-2533-2023
	Brief communication: Rapid ∼ 335 x 106 m3 bed erosionafter detachment of the Sedongpu Glacier (Tibet)
	Kaab, Andreas; Girod, Luc
发表日期	2023
ISSN	1994-0416
EISSN	1994-0424
起始页码	2533
结束页码	2541
卷号	17 期号:6
英文摘要	Following the 130 & PLUSMN; 5 x 10(6) m(3) detachment of the Sedongpu Glacier, south-eastern Tibet, in October 2018, the Sedongpu Valley, which drains into the Yarlung Tsangpo (Brahmaputra) River, underwent rapid large-volume landscape changes. Between December 2018 and 2022 and in particular during summer 2021, an enormous volume of in total & SIM; 335 & PLUSMN; 5 x 10(6) m(3) 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 2021 erosion peak happened through massive but still gradual retrogressive erosion into the former glacier bed. Several rock-ice avalanches of in total & SIM; 150 & PLUSMN; 5 x 10(6) m(3) added to the total rock, sediment, and ice volume of over 600 x 10(6) m(3) (0.6 km(3)) that has been exported from the basin since around 2017. The recent erosion volumes at Sedongpu are by order of magnitude equivalent to the average annual denudation volume of the entire Brahmaputra basin upstream of the location where the river leaves the Himalayas. This high-magnitude low-frequency event illustrates the potential for rapid post-glacial landscape evolution and associated hazards that has rarely been observed and considered at such high intensity so far.
英文关键词	DENUDATION; RANGE
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:001021062500001
来源期刊	CRYOSPHERE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283132
作者单位	University of Oslo
推荐引用方式 GB/T 7714	Kaab, Andreas,Girod, Luc. Brief communication: Rapid ∼ 335 x 106 m3 bed erosionafter detachment of the Sedongpu Glacier (Tibet)[J],2023,17(6).
APA	Kaab, Andreas,&Girod, Luc.(2023).Brief communication: Rapid ∼ 335 x 106 m3 bed erosionafter detachment of the Sedongpu Glacier (Tibet).CRYOSPHERE,17(6).
MLA	Kaab, Andreas,et al."Brief communication: Rapid ∼ 335 x 106 m3 bed erosionafter detachment of the Sedongpu Glacier (Tibet)".CRYOSPHERE 17.6(2023).