冰下水文在南极冰盖动力学和稳定性中的作用：建模视角

IF 2.5 4区地球科学 Q2 GEOGRAPHY, PHYSICAL

Annals of Glaciology Pub Date : 2022-09-01 DOI:10.1017/aog.2023.9

C. Dow

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引用次数: 4

摘要

摘要冰下水文是南极洲冰动力系统的重要组成部分，但由于汇水系统的空间尺度大、冰厚和位置偏远，研究起来很有挑战性。在这里，我讨论了冰川排水系统（GlaDS）模型中关于南极冰下水文的关键发现，包括长的、通常是高压的冰下通道的存在。这些通道每秒将数十立方米的淡水泵入冰架空腔，并直接影响临界接地带的融化速度。如果要准确预测南极冰盖的未来行为，未来的冰动力学和冰架空洞模型应该考虑冰下水文。

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The role of subglacial hydrology in Antarctic ice sheet dynamics and stability: a modelling perspective

Abstract Subglacial hydrology is an important component of the ice dynamic system in Antarctica but is challenging to investigate due to the large spatial scales of the catchment systems, the ice thickness, and remote location. Here I discuss key discoveries about Antarctic subglacial hydrology from the Glacier Drainage System (GlaDS) model, including the presence of long, often high-pressure, subglacial channels. These channels pump tens of cubic metres per second of freshwater into ice-shelf cavities and directly affect melt rates at the critical grounding zone regions. Future ice dynamics and ice-shelf cavity models should take subglacial hydrology into account if they are to accurately predict future behaviour of the Antarctic Ice Sheet.

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来源期刊

Annals of Glaciology GEOGRAPHY, PHYSICAL-GEOSCIENCES, MULTIDISCIPLINARY

CiteScore

8.20

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Annals of Glaciology publishes original scientific articles and letters in selected aspects of glaciology-the study of ice. Each issue of the Annals is thematic, focussing on a specific subject. The Council of the International Glaciological Society welcomes proposals for thematic issues from the glaciological community. Once a theme is approved, the Council appoints an Associate Chief Editor and a team of Scientific Editors to handle the submission, peer review and publication of papers.