气候变化领域集成服务门户(CCPortal): A deep groundwater origin for recurring slope lineae on Mars

CCPortal

DOI	10.1038/s41561-019-0327-5
	A deep groundwater origin for recurring slope lineae on Mars
	Abotalib A.Z.; Heggy E.
发表日期	2019
ISSN	17520894
卷号	12 期号:4
英文摘要	The recurring slope lineae on Mars have been hypothesized to originate from snow melting, deliquescence, dry flow or shallow groundwater. Except for the dry flow origin, these hypotheses imply the presence of surficial or near-surface volatiles, placing the exploration and characterization of potential habitable environments within the reach of existing technology. Here we present observations from the High Resolution Imaging Science Experiment, heat-flow modelling and terrestrial analogues, which indicate that the source of recurring slope lineae could be natural discharge along geological structures from briny aquifers within the cryosphere, at depths of approximately 750 m. Spatial correlation between recurring slope lineae source regions and multi-scale fractures (such as joints and faults) in the southern mid-latitudes and in Valles Marineris suggests that recurring slope lineae preferably emanate from tectonic and impact-related fractures. We suggest that deep groundwater occasionally surfaces on Mars in present-day conditions. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
scopus关键词	cryosphere; discharge; exploration; groundwater; heat flow; Mars; slope; Calluna vulgaris
来源期刊	Nature Geoscience
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/124688
作者单位	Viterbi School of Engineering, University of Southern California, Los Angeles, CA, United States; Department of Geological Applications, National Authority for Remote Sensing and Space Sciences, Cairo, Egypt; Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Abotalib A.Z.,Heggy E.. A deep groundwater origin for recurring slope lineae on Mars[J],2019,12(4).
APA	Abotalib A.Z.,&Heggy E..(2019).A deep groundwater origin for recurring slope lineae on Mars.Nature Geoscience,12(4).
MLA	Abotalib A.Z.,et al."A deep groundwater origin for recurring slope lineae on Mars".Nature Geoscience 12.4(2019).