Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL091095 |
Rapid formation of an ice doline on Amery Ice Shelf, East Antarctica | |
Roland C. Warner; Helen A. Fricker; Susheel Adusumilli; Philipp Arndt; Jonathan Kingslake; Julian Spergel | |
2021-06-23 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Surface meltwater accumulating on Antarctic ice shelves can drive fractures through to the ocean and potentially cause their collapse, leading to increased ice discharge from the continent. Implications of increasing surface melt for future ice shelf stability are inadequately understood. The southern Amery Ice Shelf has an extensive surface hydrological system, and we present data from satellite imagery and ICESat-2 showing a rapid surface disruption there in winter 2019, covering ∼60 km2. We interpret this as an ice-covered lake draining through the ice shelf, forming an ice doline with a central depression reaching 80 m depth amidst over 36 m uplift. Flexural rebound modelling suggests 0.75 km3 of water was lost. We observed transient refilling of the doline the following summer with rapid incision of a narrow meltwater channel (20 m wide and 6 m deep). This study demonstrates how high-resolution geodetic measurements can explore critical fine-scale ice shelf processes. |
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/333752 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Roland C. Warner,Helen A. Fricker,Susheel Adusumilli,et al. Rapid formation of an ice doline on Amery Ice Shelf, East Antarctica[J]. Geophysical Research Letters,2021. |
APA | Roland C. Warner,Helen A. Fricker,Susheel Adusumilli,Philipp Arndt,Jonathan Kingslake,&Julian Spergel.(2021).Rapid formation of an ice doline on Amery Ice Shelf, East Antarctica.Geophysical Research Letters. |
MLA | Roland C. Warner,et al."Rapid formation of an ice doline on Amery Ice Shelf, East Antarctica".Geophysical Research Letters (2021). |
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