气候变化领域集成服务门户(CCPortal): How Oceanic Melt Controls Tidewater Glacier Evolution

CCPortal

DOI	10.1029/2019GL086769
	How Oceanic Melt Controls Tidewater Glacier Evolution
	Mercenier R.; Lüthi M.P.; Vieli A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:8
英文摘要	The recent rapid retreat of many Arctic outlet glaciers has been attributed to increased oceanic melt, but the relationship between oceanic melt and iceberg calving remains poorly understood. Here, we employ a transient finite element model that simulates oceanic melt and ice break-off at the terminus. The response of an idealized tidewater glacier to various submarine melt rates and seasonal variations is investigated. Our modeling shows that for zero to low oceanic melt, the rate of volume loss at the front is similar or higher than that for intermediate oceanic melt rates. Only very high melt rates lead to increasing volume losses. These results highlight the complex interplay between oceanic melt and calving and question the general assumption that increased submarine melt leads to higher calving fluxes and enhanced retreat. Models for tidewater glacier evolution should therefore consider calving and oceanic melt as tightly coupled processes rather than as simple, additive parameterizations. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Sea ice; Melt control; Melt rate; Seasonal variation; Tidewater glaciers; Tightly-coupled; Volume loss; Submarines; flux measurement; glacier dynamics; glacier retreat; ice breakup; iceberg calving; tidewater glacier; underwater environment; Arctic
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170439
作者单位	Department of Geography, University of Zurich, Zurich, Switzerland
推荐引用方式 GB/T 7714	Mercenier R.,Lüthi M.P.,Vieli A.. How Oceanic Melt Controls Tidewater Glacier Evolution[J],2020,47(8).
APA	Mercenier R.,Lüthi M.P.,&Vieli A..(2020).How Oceanic Melt Controls Tidewater Glacier Evolution.Geophysical Research Letters,47(8).
MLA	Mercenier R.,et al."How Oceanic Melt Controls Tidewater Glacier Evolution".Geophysical Research Letters 47.8(2020).