Acceleration of glacier mass lost after ~2013 at the Mt. Everest (Qomolangma)

LI Gang; LIN Hui; YE Qinghua; JIANG Liming; HOOPER Andrew

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Acceleration of glacier mass lost after ~2013 at the Mt. Everest (Qomolangma)
Acceleration of glacier mass lost after ~2013 at the Mt. Everest (Qomolangma)
2020年24卷第S1期页码：132-139
纸质出版：2020-06-07
DOI：
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Acceleration of glacier mass lost after ~2013 at the Mt. Everest (Qomolangma)[J]. 遥感学报, 2020,24(S1):132-139. DOI：

Li G,Lin H,Ye Q H,Jiang L M and Hooper A. 2020. Acceleration of glacier mass lost after ~2013 at the Mt. Everest (Qomolangma). Journal of Remote Sensing(Chinese). 24(S1): 132-139 DOI：

摘要

Abstract

Satellite geodesy is capable for observing glacier height changes and most recent studies focus on the decadal scale due to limitations of data acquisition and precision. Glaciers at Mt. (Qomolangma)

locating at the Central Himalaya

have been studies from the 1970s to 2015. Here we obtained TerraSAR-X/TanDEM-X images observed in two epochs

a group around 2013 and another in 2017. Together with SRTM observed in 2000

we derived glacier geodetic glacier mass balance between 2000 and ~2013 and ~2013 and 2017. We proposed two InSAR procedures for deriving the second period

which yield with basically identical results of geodetic glacier mass balance. DEMs differencing between DEMs derived by TerraSAR-X/TanDEM-X show better precision than between TerraSAR-X/TanDEM-X formed DEM and SRTM

and are capable of providing geodetic glacier mass balance at sub-decadal scale. Glaciers at the Mt. Everest and its surroundings present obvious speeding up in mass lost rates before and after ~2013 for both the Chinese and the Nepalese sides. The previous obtained spatial heterogeneous pattern for glacier downwasting between 2000 and ~2013 generally kept the same after ~2013. Glaciers with lacustrine terminus present most rapid lost rates.

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references

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