DOI: 10.1002/2016GL071022
论文题名: Mass wasting triggered by seasonal CO2 sublimation under Martian atmospheric conditions: Laboratory experiments
作者: Sylvest M.E. ; Conway S.J. ; Patel M.R. ; Dixon J.C. ; Barnes A.
刊名: Geophysical Research Letters
ISSN: 0094-8276
EISSN: 1944-8007
出版年: 2016
卷: 43, 期: 24 起始页码: 12363
结束页码: 12370
语种: 英语
英文关键词: carbon dioxide
; laboratory simulation
; Mars
; Martian gullies
; sublimation
Scopus关键词: Carbon
; Landforms
; Sediment transport
; Sedimentation
; Sediments
; Sublimation
; Atmospheric conditions
; Empirical data
; Laboratory experiments
; Laboratory simulation
; Mars
; Martian gullies
; Space and time
; Theoretical study
; Carbon dioxide
英文摘要: Sublimation is a recognized process by which planetary landscapes can be modified. However, interpretation of whether sublimation is involved in downslope movements on Mars and other bodies is restricted by a lack of empirical data to constrain this mechanism of sediment transport and its influence on landform morphology. Here we present the first set of laboratory experiments under Martian atmospheric conditions which demonstrate that the sublimation of CO2 ice from within the sediment body can trigger failure of unconsolidated, regolith slopes and can measurably alter the landscape. Previous theoretical studies required CO2 slab ice for movements, but we find that only frost is required. Hence, sediment transport by CO2 sublimation could be more widely applicable (in space and time) on Mars than previously thought. This supports recent work suggesting CO2 sublimation could be responsible for recent modification in Martian gullies. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007378976&doi=10.1002%2f2016GL071022&partnerID=40&md5=711afdd71fbddc82ef2b52fcbc3ecf95
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9239
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: Arkansas Center for Space and Planetary Sciences, University of Arkansas, Fayetteville, AR, United States
Recommended Citation:
Sylvest M.E.,Conway S.J.,Patel M.R.,et al. Mass wasting triggered by seasonal CO2 sublimation under Martian atmospheric conditions: Laboratory experiments[J]. Geophysical Research Letters,2016-01-01,43(24).