DOI: 10.1002/2015GL067394
论文题名: Identification of buried lunar impact craters from GRAIL data and implications for the nearside maria
作者: Evans A.J. ; Soderblom J.M. ; Andrews-Hanna J.C. ; Solomon S.C. ; Zuber M.T.
刊名: Geophysical Research Letters
ISSN: 0094-9180
EISSN: 1944-8911
出版年: 2016
卷: 43, 期: 6 起始页码: 2445
结束页码: 2455
语种: 英语
英文关键词: buried
; crater
; GRAIL
; lunar
; maria
; Moon
Scopus关键词: Basalt
; Deposits
; Feldspar deposits
; Gravitation
; Buried
; Crater
; GRAIL
; Lunar
; Maria
; Moon
; crater
; feldspar
; GRAIL
; gravity survey
; lava flow
; mare basalt
; Moon
; spacecraft
; upper crust
; volcanic landform
英文摘要: Gravity observations from the dual Gravity Recovery and Interior Laboratory (GRAIL) spacecraft have revealed more than 100 quasi-circular mass anomalies, 26-300 km in diameter, on the lunar nearside. These anomalies are interpreted to be impact craters filled primarily by mare deposits, and their characteristics are consistent with those of impact structures that formed prior to, and during, intervals of flooding of feldspathic terrane by mare basalt lavas. We determine that mare deposits have an average density contrast of 850-200+300 kg m-3 relative to the surrounding crust. The presence of a large population of volcanically buried craters with minimal topographic expression and diameters up to 300 km requires an average nearside mare thickness of at least 1.5 km and local lenses of mare basalt as thick as ∼7 km. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978003654&doi=10.1002%2f2015GL067394&partnerID=40&md5=5dc05a363d9055cc849b4e58a5433f1a
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10143
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 Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Evans A.J.,Soderblom J.M.,Andrews-Hanna J.C.,et al. Identification of buried lunar impact craters from GRAIL data and implications for the nearside maria[J]. Geophysical Research Letters,2016-01-01,43(6).