| DOI: | 10.1002/2015GL066515
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| 论文题名: | Antarctic ice shelf thickness from CryoSat-2 radar altimetry |
| 作者: | Chuter S.J.; Bamber J.L.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8303
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| EISSN: | 1944-8034
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| 出版年: | 2015
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| 卷: | 42, 期:24 | | 起始页码: | 10721
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| 结束页码: | 10729
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| 语种: | 英语
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| 英文关键词: | Antarctica
; CryoSat-2
; cryosphere
; ice shelves
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| Scopus关键词: | Budget control
; Orbits
; Radar
; Radar measurement
; Radio systems
; Synthetic aperture radar
; Uncertainty analysis
; Antarctic ice shelves
; Antarctica
; Cryosat
; Cryosphere
; Hydrostatic equilibrium
; Ice shelves
; Radio-echo sounding
; Standard deviation
; Ice
; CryoSat
; cryosphere
; data set
; echo sounder
; elevation
; grounding line
; hydrostatics
; ice shelf
; ice thickness
; ICESat
; mass balance
; radar altimetry
; radar interferometry
; spatiotemporal analysis
; synthetic aperture radar
; uncertainty analysis
; Amery Ice Shelf
; Antarctic Ice Sheet
; Antarctica
; East Antarctica
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| 英文摘要: | Ice shelf thickness for the whole of Antarctica is derived from 4 years (2011-2014) of CryoSat-2 (CS2) radar altimetry measurements using the assumption that the shelves are in hydrostatic equilibrium. The satellite orbit and novel synthetic aperture radar interferometric mode of CS2 results in 92.3% data coverage over the ice shelves, with particular improvements around the grounding zone. When compared to ICESat data, surface elevations have a mean bias of less than 1 m and a fourfold reduction in standard deviation compared with the previous data set. Over the Amery Ice Shelf there is a mean thickness difference of 3.3% between radio echo sounding measurements and the CS2-derived thicknesses, rising to 4.7% within 10 km of the grounding line. Our new data set provides key improvements in accuracy and coverage, especially in the grounding zone, allowing for reduced uncertainties in mass budget calculations, subshelf ocean and ice sheet-shelf modeling. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955203967&doi=10.1002%2f2015GL066515&partnerID=40&md5=d4480dbf69f70f229fa51b963025b2a6
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7919
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| 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: | Bristol Glaciology Centre, School of Geographical Sciences, University of Bristol, Bristol, United Kingdom
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| Recommended Citation: | |
Chuter S.J.,Bamber J.L.. Antarctic ice shelf thickness from CryoSat-2 radar altimetry[J]. Geophysical Research Letters,2015-01-01,42(24).
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