Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094252 |
Estimating ice discharge at Greenland's three largest outlet glaciers using local bedrock uplift | |
Karina Hansen; Martin Truffer; Andy Aschwanden; Kenneth Mankoff; Michael Bevis; Angelika Humbert; Michiel R. van den Broeke; Brice Noë; l; Anders Bjø; rk; William Colgan; Kurt H Kjæ; r; Surendra Adhikari; Valentina Barletta; Shfaqat A Khan | |
2021-07-03 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | We present a novel method to estimate dynamic ice loss of Greenland's three largest outlet glaciers: Jakobshavn Isbræ, Kangerlussuaq Glacier, and Helheim Glacier. We use Global Navigation Satellite System (GNSS) stations attached to bedrock to measure elastic displacements of the solid Earth caused by dynamic thinning near the glacier terminus. When we compare our results with discharge, we find a time lag between glacier speedup/slowdown and onset of dynamic thinning/thickening. Our results show that dynamic thinning/thickening on Jakobshavn Isbræ occurs 0.87 ± 0.07 years before speedup/slowdown. This implies that using GNSS time series we are able to predict speedup/slowdown of Jakobshavn Isbræ by up to 10.4 months. For Kangerlussuaq Glacier the lag between thinning/thickening and speedup/slowdown is 0.37 ± 0.17 years (4.4 months). Our methodology and results could be important for studies that attempt to model and understand mechanisms controlling short-term dynamic fluctuations of outlet glaciers in Greenland. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/333828 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Karina Hansen,Martin Truffer,Andy Aschwanden,et al. Estimating ice discharge at Greenland's three largest outlet glaciers using local bedrock uplift[J]. Geophysical Research Letters,2021. |
APA | Karina Hansen.,Martin Truffer.,Andy Aschwanden.,Kenneth Mankoff.,Michael Bevis.,...&Shfaqat A Khan.(2021).Estimating ice discharge at Greenland's three largest outlet glaciers using local bedrock uplift.Geophysical Research Letters. |
MLA | Karina Hansen,et al."Estimating ice discharge at Greenland's three largest outlet glaciers using local bedrock uplift".Geophysical Research Letters (2021). |
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