DOI: 10.1002/2015GL067365
论文题名: A constitutive framework for predicting weakening and reduced buttressing of ice shelves based on observations of the progressive deterioration of the remnant Larsen B Ice Shelf
作者: Borstad C. ; Khazendar A. ; Scheuchl B. ; Morlighem M. ; Larour E. ; Rignot E.
刊名: Geophysical Research Letters
ISSN: 0094-9317
EISSN: 1944-9048
出版年: 2016
卷: 43, 期: 5 起始页码: 2027
结束页码: 2035
语种: 英语
英文关键词: damage mechanics
; glaciology
; ice shelf buttressing
Scopus关键词: Deformation
; Glaciers
; Sea ice
; Sea level
; Antarctic ice sheets
; Damage mechanics
; Glaciology
; Ice deformation
; Ice sheet models
; Ice-shelf buttressing
; Mechanical weakening
; Sea level rise
; Ice
英文摘要: The increasing contribution of the Antarctic Ice Sheet to sea level rise is linked to reductions in ice shelf buttressing, driven in large part by basal melting of ice shelves. These ocean-driven buttressing losses are being compounded as ice shelves weaken and fracture. To date, model projections of ice sheet evolution have not accounted for weakening ice shelves. Here we present the first constitutive framework for ice deformation that explicitly includes mechanical weakening, based on observations of the progressive degradation of the remnant Larsen B Ice Shelf from 2000 to 2015. We implement this framework in an ice sheet model and are able to reproduce most of the observed weakening of the ice shelf. In addition to predicting ice shelf weakening and reduced buttressing, this new framework opens the door for improved understanding and predictions of iceberg calving, meltwater routing and hydrofracture, and ice shelf collapse. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959501741&doi=10.1002%2f2015GL067365&partnerID=40&md5=acffa2473a35e536a96dba454e86f97a
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10280
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Arctic Geophysics, University Centre in Svalbard, Longyearbyen, Norway
Recommended Citation:
Borstad C.,Khazendar A.,Scheuchl B.,et al. A constitutive framework for predicting weakening and reduced buttressing of ice shelves based on observations of the progressive deterioration of the remnant Larsen B Ice Shelf[J]. Geophysical Research Letters,2016-01-01,43(5).