DOI: 10.1002/2016GL069173
论文题名: Ice flow dynamics and mass loss of Totten Glacier, East Antarctica, from 1989 to 2015
作者: Li X. ; Rignot E. ; Mouginot J. ; Scheuchl B.
刊名: Geophysical Research Letters
ISSN: 0094-9655
EISSN: 1944-9386
出版年: 2016
卷: 43, 期: 12 起始页码: 6366
结束页码: 6373
语种: 英语
英文关键词: Antarctica
; ice discharge
; mass budget
; remote sensing
; sea level
; Totten Glacier
Scopus关键词: Budget control
; Climate models
; Dynamics
; Remote sensing
; Sea level
; Space-based radar
; Synthetic aperture radar
; Antarctica
; Atmospheric climate
; Ice discharges
; Ice flow dynamics
; Interferometric synthetic aperture radars
; Mass budget
; Satellite altimetry data
; Surface mass balance
; Ice
; climate modeling
; glacier mass balance
; ice flow
; ice thickness
; Landsat
; remote sensing
; satellite altimetry
; satellite data
; sea level
; sea surface temperature
; snow accumulation
; synthetic aperture radar
; Antarctic Ice Sheet
; Antarctica
; East Antarctic Ice Sheet
; East Antarctica
英文摘要: Totten Glacier has the largest ice discharge in East Antarctica and a basin grounded mostly below sea level. Satellite altimetry data have revealed ice thinning in areas of fast flow. Here we present a time series of ice velocity measurements spanning from 1989 to 2015 using Landsat and interferometric synthetic-aperture radar data, combined with ice thickness from Operation IceBridge, and surface mass balance from Regional Atmospheric Climate Model. We find that the glacier speed exceeded its balance speed in 1989–1996, slowed down by 11 ± 12% in 2000 to bring its ice flux in balance with accumulation (65 ± 4 Gt/yr), then accelerated by 18 ± 3% until 2007, and remained constant thereafter. The average ice mass loss (7 ± 2 Gt/yr) is dominated by ice dynamics (73%). Its acceleration (0.6 ± 0.3 Gt/yr2) is dominated by surface mass balance (80%). Ice velocity apparently increased when ocean temperature was warmer, which suggests a linkage between ice dynamics and ocean temperature. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978209172&doi=10.1002%2f2016GL069173&partnerID=40&md5=174f0a9056e74b98dd96d273b92f18a4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10618
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 Earth System Science, University of California, Irvine, CA, United States
Recommended Citation:
Li X.,Rignot E.,Mouginot J.,et al. Ice flow dynamics and mass loss of Totten Glacier, East Antarctica, from 1989 to 2015[J]. Geophysical Research Letters,2016-01-01,43(12).