| DOI: | 10.1002/2016GL068011
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| 论文题名: | Carving intracrater layered deposits with wind on Mars |
| 作者: | Day M.; Anderson W.; Kocurek G.; Mohrig D.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9227
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| EISSN: | 1944-8958
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| 出版年: | 2016
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| 卷: | 43, 期:6 | | 起始页码: | 2473
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| 结束页码: | 2479
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| 语种: | 英语
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| 英文关键词: | aeolian
; craters
; intracrater layered deposits
; Mars
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| Scopus关键词: | Deposits
; Erosion
; Feedback
; Sedimentology
; Stratigraphy
; Wind tunnels
; Aeolian
; Craters
; Erosion potentials
; Layered deposits
; Mars
; Mound morphologies
; Sedimentary sequence
; Wind tunnel experiment
; Large eddy simulation
; basin fill
; desiccation
; eolian process
; intracratonic basin
; large eddy simulation
; Mars
; numerical model
; sedimentary sequence
; wind direction
; wind forcing
; wind tunnel
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| 英文摘要: | Crater basins on Mars host thick sedimentary sequences, which record the environments of early Mars. These basin fills commonly exhibit mound morphologies thought to arise from aeolian erosion of initially crater filling strata. This study presents transport-based models explaining how mounds could be carved by wind. Wind tunnel experiments generated morphologies similar to those observed on Mars, and numerical modeling of flow over a crater using large-eddy simulation (LES) demonstrated a positive feedback between topographic focusing of flow and erosion potential. Observations of yardangs, dunes, and wind streaks, all proxies for wind direction, largely agree with model results. Where mound strata origins have been interpreted, basal subaqueous deposits are overlain by aeolian deposits. This stratigraphic progression, culminating in wind-driven excavation, is consistent with a global desiccation event. The occurrence of sedimentary mounds only on Noachian terrain argues that this event was related to late Noachian climatic change. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84979490759&doi=10.1002%2f2016GL068011&partnerID=40&md5=d4147916a479ed161fc439c7c24fb825
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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/10190
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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: | Department of Geological Sciences, Jackson School of Geosciences, University of Texas at Austin, Austin, TX, United States
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| Recommended Citation: | |
Day M.,Anderson W.,Kocurek G.,et al. Carving intracrater layered deposits with wind on Mars[J]. Geophysical Research Letters,2016-01-01,43(6).
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