globalchange  > 气候减缓与适应
DOI: 10.1029/2018JE005536
Scopus记录号: 2-s2.0-85052801789
论文题名:
New Evidence of an Ancient Martian Ocean From the Global Distribution of Valley Networks
作者: Chan N.-H.; Perron J.T.; Mitrovica J.X.; Gomez N.A.
刊名: Journal of Geophysical Research: Planets
ISSN: 21699097
出版年: 2018
卷: 123, 期:8
起始页码: 2138
结束页码: 2150
语种: 英语
英文关键词: erosion ; Mars ; ocean ; shorelines ; true polar wander ; valley networks
英文摘要: We examine the connection between true polar wander (TPW) and the evidence for an ancient ocean on Mars. Previous studies have investigated the plausibility of a Mars ocean by examining the topography of possible ancient sea level markers on the planet's surface. One such study argued that features interpreted as ancient shorelines display long-wavelength topographic variations consistent with postformational TPW (Perron et al., 2007, https://doi.org/10.1038/nature05873). In contrast, a second study argued that the elevations of possible ancient deltaic deposits associated with an ocean on early Mars are not consistent with the TPW scenario (di Achille & Hynek, 2010, https://doi.org/10.1038/ngeo891). Herein we revisit this issue by examining another marker of ancient shorelines—fluvial valley networks observed on the surface of Mars. Our results support the existence of an ancient Martian ocean and that long-wavelength deformation of related surface features (ancient shorelines and valley networks) was driven by some combination of TPW and surface loading associated with the formation of the Tharsis volcanic province. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113439
Appears in Collections:气候减缓与适应

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作者单位: McGill Space Institute, McGill University, Montréal, QC, Canada; Department of Earth and Planetary Sciences, McGill University, Montréal, QC, Canada; Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, United States

Recommended Citation:
Chan N.-H.,Perron J.T.,Mitrovica J.X.,et al. New Evidence of an Ancient Martian Ocean From the Global Distribution of Valley Networks[J]. Journal of Geophysical Research: Planets,2018-01-01,123(8)
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