DOI: 10.1002/2015GL064355
论文题名: Modeling the instantaneous response of glaciers after the collapse of the Larsen B Ice Shelf
作者: De Rydt J. ; Gudmundsson G.H. ; Rott H. ; Bamber J.L.
刊名: Geophysical Research Letters
ISSN: 0094-9280
EISSN: 1944-9011
出版年: 2015
卷: 42, 期: 13 起始页码: 5355
结束页码: 5363
语种: 英语
英文关键词: buttressing
; glacier speedup
; ice shelf collapse
; Larsen B
Scopus关键词: Earth sciences
; Geophysics
; Antarctic Peninsula
; Buttressing
; Glacier dynamics
; Ice shelves
; Instantaneous response
; Lars-en
; Mechanical coupling
; State of the art
; Ice
; data set
; glacier dynamics
; glacier flow
; ice flow
; ice shelf
; numerical model
; qualitative analysis
; spatiotemporal analysis
; Antarctic Peninsula
; Antarctica
; Larsen Ice Shelf
; Scar Inlet
; West Antarctica
英文摘要: Following the disintegration of the Larsen B Ice Shelf, Antarctic Peninsula, in 2002, regular surveillance of its â20 tributary glaciers has revealed a response which is varied and complex in both space and time. The major outlets have accelerated and thinned, smaller glaciers have shown little or no change, and glaciers flowing into the remnant Scar Inlet Ice Shelf have responded with delay. In this study we present the first areawide numerical analysis of glacier dynamics before and immediately after the collapse of the ice shelf, combining new data sets and a state-of-the-art numerical ice flow model. We simulate the loss of buttressing at the grounding line and find a good qualitative agreement between modeled changes in glacier flow and observations. Through this study, we seek to improve confidence in our numerical models and their ability to capture the complex mechanical coupling between floating ice shelves and grounded ice. Key Points Ice shelf collapse reduces back pressure by up to 30% at the grounding line Ice shelf collapse causes instantaneous speedup that extends 15km inland Hektoria, Green, and Crane speed up >100m/yr, Flask and Leppard remain unaffected. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938203115&doi=10.1002%2f2015GL064355&partnerID=40&md5=a2599a46b1692b38eee1164501baadde
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8896
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: British Antarctic Survey, Cambridge, United Kingdom
Recommended Citation:
De Rydt J.,Gudmundsson G.H.,Rott H.,et al. Modeling the instantaneous response of glaciers after the collapse of the Larsen B Ice Shelf[J]. Geophysical Research Letters,2015-01-01,42(13).