DOI: 10.1002/2016GL068956
论文题名: New insights into gully formation on Mars: Constraints from composition as seen by MRO/CRISM
作者: Núñez J.I. ; Barnouin O.S. ; Murchie S.L. ; Seelos F.P. ; McGovern J.A. ; Seelos K.D. ; Buczkowski D.L.
刊名: Geophysical Research Letters
ISSN: 0094-8713
EISSN: 1944-8444
出版年: 2016
卷: 43, 期: 17 起始页码: 8893
结束页码: 8902
语种: 英语
英文关键词: CRISM
; geological processes
; ices
; Mars, composition
; Mars, gullies
; Mars, surface
Scopus关键词: Carbon dioxide
; Ice
; Image reconstruction
; Martian surface analysis
; Compact reconnaissance
; CRISM
; Formation and evolutions
; Geological process
; High-resolution imaging
; Imaging spectrometers
; Mars Reconnaissance Orbiters
; Mars, gullies
; Landforms
; carbon dioxide
; dust
; frost
; gully
; hydrogen
; ice cover
; Mars
; source rock
; spectrometer
英文摘要: Over 100 Martian gully sites were analyzed using orbital data collected by the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) and High Resolution Imaging Science Experiment on the Mars Reconnaissance Orbiter (MRO). Most gullies are spectrally indistinct from their surroundings, due to mantling by dust. Where spectral information on gully sediments was obtained, a variety of mineralogies were identified. Their relationship to the source rock suggests that gully-forming processes transported underlying material downslope. There is no evidence for specific compositions being more likely to be associated with gullies or with the formation of hydrated minerals in situ as a result of recent liquid water activity. Seasonal CO2 and H2O frosts were observed in gullies at middle to high latitudes, consistent with seasonal frost-driven processes playing important roles in the evolution of gullies. Our results do not clearly indicate a role for long-lived liquid water in gully formation and evolution. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987668095&doi=10.1002%2f2016GL068956&partnerID=40&md5=269be285985841625b0815a42e72cc09
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9676
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: Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
Recommended Citation:
Núñez J.I.,Barnouin O.S.,Murchie S.L.,et al. New insights into gully formation on Mars: Constraints from composition as seen by MRO/CRISM[J]. Geophysical Research Letters,2016-01-01,43(17).