DOI: 10.1016/j.epsl.2018.03.001
Scopus记录号: 2-s2.0-85043469731
论文题名: First quantification of relationship between dune orientation and sediment availability, Olympia Undae, Mars
作者: Fernandez-Cascales L. ; Lucas A. ; Rodriguez S. ; Gao X. ; Spiga A. ; Narteau C.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 489 起始页码: 241
结束页码: 250
语种: 英语
英文关键词: aeolian transport
; bedform alignment
; dunes
; Mars
; sediment cover
Scopus关键词: Inverse problems
; Meteorology
; Satellite imagery
; Satellites
; Sediment transport
; Wind
; Aeolian transport
; Bed forms
; dunes
; Mars
; Meteorological data
; Sediment availability
; Sediment transport pathways
; Sedimentary bodies
; Sediments
; bedform
; dune formation
; eolian process
; inverse problem
; Mars
; numerical model
; quantitative analysis
; sediment transport
英文摘要: Dunes provide unique information about wind regimes on planetary bodies where there is no direct meteorological data. At the eastern margin of Olympia Undae on Mars, dune orientation is measured from satellite imagery and sediment cover is estimated using the high contrast between the dune material and substrate. The analysis of these data provide the first quantification of relationship between sediment availability and dune orientation. Abrupt and smooth dune reorientations are associated with inward and outward dynamics of dunes approaching and ejecting from major sedimentary bodies, respectively. These reorientation patterns along sediment transport pathways are interpreted using a new generation dune model based on the coexistence of two dune growth mechanisms. This model also permits solving of the inverse problem of predicting the wind regime from dune orientation. For bidirectional wind regimes, solutions of this inverse problem show substantial differences in the distributions of sediment flux orientation, which can be attributed to atmospheric flow variations induced by changes in albedo at the boundaries of major dune fields. Then, we conclude that relationships between sediment cover and dune orientation can be used to constrain wind regime and dune field development on Mars and other planetary surfaces. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109976
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Institut de Physique du Globe de Paris, Sorbonne Paris Cité, Univ Paris Diderot, UMR 7154 CNRS, 1 rue Jussieu, Cedex 05, Paris, 75238, France; AIM CEA-Saclay, Université Paris Diderot, USPC, Paris, France; Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 818 South Beijing road, Urumqi, 830011, China; Laboratoire de Météorologie Dynamique/Institut Pierre-Simon Laplace (LMD/IPSL), Sorbonne Université, PSL Research University, École Normale Supérieure, Université Paris-Saclay, École Polytechnique, CNRS, France
Recommended Citation:
Fernandez-Cascales L.,Lucas A.,Rodriguez S.,et al. First quantification of relationship between dune orientation and sediment availability, Olympia Undae, Mars[J]. Earth and Planetary Science Letters,2018-01-01,489