DOI: 10.1002/2015GL063219
论文题名: Volume of Martian midlatitude glaciers from radar observations and ice flow modeling
作者: Karlsson N.B. ; Schmidt L.S. ; Hvidberg C.S.
刊名: Geophysical Research Letters
ISSN: 0094-8751
EISSN: 1944-8482
出版年: 2015
卷: 42, 期: 8 起始页码: 2627
结束页码: 2633
语种: 英语
英文关键词: glaciers on Mars
; ice flow models
; inverse methods
; radar sounding
Scopus关键词: Budget control
; Inverse problems
; Radar
; Reservoirs (water)
; Yield stress
; Ice cover
; Ice deposit
; Ice volumes
; Ice-flow models
; Inverse methods
; Midlatitudes
; Radar observations
; Radar soundings
; Ice
; flow modeling
; glacial debris
; glacial environment
; ice flow
; ice thickness
; Martian atmosphere
; radar imagery
英文摘要: Numerous glacier-like forms have been identified in the midlatitudes of Mars, and within recent years the acquisition of radar sounding data has revealed that the features are chiefly composed of water ice. Here we use radar observations in combination with ice flow models and inverse methods to calculate the volume of ice present at the midlatitudes of Mars. In order to obtain ice thicknesses, we infer the yield stress of the ice deposits, and we find that they are consistently lower than those of most terrestrial glaciers. We estimate the present ice volume of lobate debris aprons (identified by Levy et al. (2014)) on Mars to correspond to 1.55 · 105 km3 with an uncertainty of 25%. This corresponds to a global ice cover of 1.1m. Thus, the water ice found at midlatitudes is an important water reservoir, and an important part of the global surface ice budget. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929519135&doi=10.1002%2f2015GL063219&partnerID=40&md5=932b173ef4cac6ffce4a72e70681644b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8367
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: Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
Recommended Citation:
Karlsson N.B.,Schmidt L.S.,Hvidberg C.S.. Volume of Martian midlatitude glaciers from radar observations and ice flow modeling[J]. Geophysical Research Letters,2015-01-01,42(8).