| DOI: | 10.1002/2014GL062405
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| 论文题名: | Ice collapse over trapped water bodies on Enceladus and Europa |
| 作者: | Walker C.C.; Schmidt B.E.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9007
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| EISSN: | 1944-8738
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| 出版年: | 2015
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| 卷: | 42, 期:3 | | 起始页码: | 712
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| 结束页码: | 719
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| 语种: | 英语
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| 英文关键词: | collapse features
; Enceladus
; Europa
; icy satellites
; trapped water bodies
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| Scopus关键词: | Geology
; Collapse features
; Enceladus
; Europa
; Icy satellites
; Waterbodies
; Ice
; chaotic dynamics
; collapse
; discrete element method
; flexure
; granular medium
; terrain
; topography
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| 英文摘要: | Icy satellite surfaces are riddled with geological indicators that can inform what lies beneath. Here we investigate effects of trapped or perched subsurface liquid water on the surface above. We use two models to investigate these effects: first, an analytical model to determine the flexural response of an ice shell to the existence of trapped water, and second, a discrete element model that simulates collapse of ice through granular interactions to determine possible topography that would result from this stress being placed on the ice. We find that for Europa's likely trapped water pockets below chaos terrains and a localized sea below Enceladus' South Polar Terrain, these models can reproduce observed geology of both features. Thus, we postulate that it is likely that Europa's chaos terrains and Enceladus' South Polar Terrain formed due to a similar mechanism: ice collapse above trapped water. © 2015 The Authors. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925159089&doi=10.1002%2f2014GL062405&partnerID=40&md5=c2e4453c6a1f27972a5b884fdbb2202b
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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/8623
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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: | School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States
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| Recommended Citation: | |
Walker C.C.,Schmidt B.E.. Ice collapse over trapped water bodies on Enceladus and Europa[J]. Geophysical Research Letters,2015-01-01,42(3).
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