globalchange  > 科学计划与规划
DOI: 10.1002/2015GL063824
论文题名:
Spectral properties of Titan's impact craters imply chemical weathering of its surface
作者: Neish C.D.; Barnes J.W.; Sotin C.; Mackenzie S.; Soderblom J.M.; Le Mouélic S.; Kirk R.L.; Stiles B.W.; Malaska M.J.; Le Gall A.; Brown R.H.; Baines K.H.; Buratti B.; Clark R.N.; Nicholson P.D.
刊名: Geophysical Research Letters
ISSN: 0094-9347
EISSN: 1944-9078
出版年: 2015
卷: 42, 期:10
起始页码: 3746
结束页码: 3754
语种: 英语
英文关键词: erosion and weathering ; impact cratering ; Titan
Scopus关键词: Degradation ; Geochemistry ; Ice ; Methane ; Chemical weathering ; Degradation state ; Equatorial regions ; Impact cratering ; Organic materials ; Spectral characteristics ; Spectral properties ; Titan ; Weathering ; chemical weathering ; crater ; erosion ; spectral analysis ; Titan ; water
英文摘要: We examined the spectral properties of a selection of Titan's impact craters that represent a range of degradation states. The most degraded craters have rims and ejecta blankets with spectral characteristics that suggest that they are more enriched in water ice than the rims and ejecta blankets of the freshest craters on Titan. The progression is consistent with the chemical weathering of Titan's surface. We propose an evolutionary sequence such that Titan's craters expose an intimate mixture of water ice and organic materials, and chemical weathering by methane rainfall removes the soluble organic materials, leaving the insoluble organics and water ice behind. These observations support the idea that fluvial processes are active in Titan's equatorial regions. ©2015. The Authors.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84931327279&doi=10.1002%2f2015GL063824&partnerID=40&md5=8f4e3e2acf6dc5bc389c59e494740200
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8962
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: Department of Physics and Space Sciences, Florida Institute of Technology, Melbourne, FL, United States

Recommended Citation:
Neish C.D.,Barnes J.W.,Sotin C.,et al. Spectral properties of Titan's impact craters imply chemical weathering of its surface[J]. Geophysical Research Letters,2015-01-01,42(10).
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