Advances in understanding subglacial meltwater drainage from past ice sheets

IF 2.5 4区 地球科学 Q2 GEOGRAPHY, PHYSICAL Annals of Glaciology Pub Date : 2022-09-01 DOI:10.1017/aog.2023.16
L. Simkins, S. Greenwood, M. Winsborrow, L. Bjarnadóttir, A. Lepp
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引用次数: 3

Abstract

Abstract Meltwater drainage beneath ice sheets is a fundamental consideration for understanding ice–bed conditions and bed-modulated ice flow, with potential impacts on terminus behavior and ice-shelf mass balance. While contemporary observations reveal the presence of basal water movement in the subglacial environment and inferred styles of drainage, the geological record of former ice sheets, including sediments and landforms on land and the seafloor, aids in understanding the spatiotemporal evolution of efficient and inefficient drainage systems and their impact on ice-sheet behavior. We highlight the past decade of advances in geological studies that focus on providing process-based information on subglacial hydrology of ice sheets, how these studies inform theory, numerical models and contemporary observations, and address the needs for future research.
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了解过去冰盖的冰下融水排水的进展
摘要冰盖下的融水排水是了解冰床条件和冰床调节冰流的基本考虑因素,对末端行为和冰架质量平衡有潜在影响。虽然当代观测揭示了冰下环境中基底水运动的存在和推断的排水方式,但前冰盖的地质记录,包括陆地和海底的沉积物和地貌,有助于理解高效和低效排水系统的时空演变及其对冰盖行为的影响。我们强调了过去十年地质研究的进展,这些研究侧重于提供基于过程的冰盖冰下水文信息,这些研究如何为理论、数值模型和当代观测提供信息,并满足未来研究的需求。
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来源期刊
Annals of Glaciology
Annals of Glaciology GEOGRAPHY, PHYSICAL-GEOSCIENCES, MULTIDISCIPLINARY
CiteScore
8.20
自引率
0.00%
发文量
0
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.
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