Multi-decadal elevation changes of the land terminating sector of West Greenland
Multi-decadal elevation changes of the land terminating sector of West Greenland
复制标题
西格陵兰陆地终止区的数十年高程变化
DOI:
10.1017/jog.2022.47
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发表时间:
2023
影响因子:
3.4
通讯作者:
Harper, Joel
中科院分区:
文献类型:
--
作者:
Saito, Jun;Meierbachtol, Toby;Harper, Joel
Regional assessments of ice elevation change provide insight into the processes controlling an ice sheet's geometric response to climate forcing. In Southwest Greenland's land terminating sector (SWLTS), it is presumed that ice surface elevation changes result solely from changing surface mass balance (SMB). Here we test this assumption by developing a multi-decadal (1985–2017) record of elevation change from digital elevation models (DEMs) and comparing it to regional climate model output and available records of ice speed. The SWLTS thinned by >12 m on average over the full 32-year period, but the change was highly variable in time and space. Thinning was amplified in the central region of the SWLTS, relative to the north and south. During 1985–2007, the north and south regions demonstrated net thickening while the central region thinned. Regional differences in elevation change are inconsistent with SMB anomalies, indicating that enhanced ice flow in the north and south contributed to thickening during this early time interval. While clear validation in the south is prevented by incomplete velocity data, historical surface speeds in the north were elevated. These findings support the interpretation that changing ice flow can influence ice surface elevation in the slow-moving SWLTS.
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DOI:
--
发表时间:
2020
期刊:
影响因子:
--
作者:
A. Weidick
通讯作者:
A. Weidick
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
D. van As;B. Hasholt;A. Ahlstrøm;J. Box;J. Cappelen;W. Colgan;R. Fausto;S. Mernild;A. Mikkelsen;B. Noël;D. Petersen;M. R. van den Broeke
通讯作者:
M. R. van den Broeke
影响因子:
3.4
作者:
B. Pelto;F. Maussion;B. Menounos;V. Radic;Maurice Zeuner
通讯作者:
Maurice Zeuner
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Geologiske Undersøgelse;Feiko Kalsbeek
通讯作者:
Feiko Kalsbeek
DOI:
--
发表时间:
2018
期刊:
影响因子:
--
作者:
Luisa von Albedyll;H. Machguth;S. U. Nussbaumer;M. Zemp
通讯作者:
M. Zemp