气候变化领域集成服务门户(CCPortal): Water-Ice Exposing Scarps Within the Northern Midlatitude Craters on Mars

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DOI	10.1029/2020GL089057
	Water-Ice Exposing Scarps Within the Northern Midlatitude Craters on Mars
	Harish; Vijayan S.; Mangold N.; Bhardwaj A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	We report new exposures of water ice along the scarps wall located within craters in the northern midlatitude region of Mars using high-resolution imagery and spectral data of Mars Reconnaissance Orbiter. The exposed water-ice deposits are shallower and exhibit 1.5 and 2 μm absorption. These scarps are located on the pole-facing walls and equator-facing wall origin floor deposits which formed over the latitude dependent mantle. Our observations advance in bracketing the younger ice deposits through the crater size-frequency distributions of host craters, which formed around ~25 and ~95 Myr and exposed around ~1 Myr. This reveals that ice transportation, accumulation, compaction, and ice-dust mixing occurred in recent epochs. Our study complements the earlier studies that shallow water ice is spatially widespread and consistent with subsurface water-ice detection by neutron spectrometer. We interpret the ice remnants likely to preserve in craters pole-facing wall and equator-facing wall-associated floor deposits, which demonstrates widespread water-ice resources on Mars. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Deposits; Facings; Floors; Martian surface analysis; Poles; Water absorption; Crater sizes; High resolution imagery; Ice deposit; Mars Reconnaissance Orbiters; Midlatitudes; Shallow waters; Spectral data; Subsurface waters; Ice; crater; image resolution; Mars; midlatitude environment; satellite imagery; spectrometer
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170119
作者单位	Planetary Science Division, Physical Research Laboratory, Ahmedabad, India; Discipline of Earth Sciences, Indian Institute of Technology, Gandhinagar, India; Laboratoire de Planétologie et Géodynamique, Nantes, CNRS UMR6112, Université de Nantes, Université d'Angers, Nantes, France
推荐引用方式 GB/T 7714	Harish,Vijayan S.,Mangold N.,et al. Water-Ice Exposing Scarps Within the Northern Midlatitude Craters on Mars[J],2020,47(14).
APA	Harish,Vijayan S.,Mangold N.,&Bhardwaj A..(2020).Water-Ice Exposing Scarps Within the Northern Midlatitude Craters on Mars.Geophysical Research Letters,47(14).
MLA	Harish,et al."Water-Ice Exposing Scarps Within the Northern Midlatitude Craters on Mars".Geophysical Research Letters 47.14(2020).