DOI: 10.1002/2014GL060240
论文题名: GRAIL gravity constraints on the vertical and lateral density structure of the lunar crust
作者: Besserer J. ; Nimmo F. ; Wieczorek M.A. ; Weber R.C. ; Kiefer W.S. ; McGovern P.J. ; Andrews-Hanna J.C. ; Smith D.E. ; Zuber M.T.
刊名: Geophysical Research Letters
ISSN: 0094-9841
EISSN: 1944-9572
出版年: 2014
卷: 41, 期: 16 起始页码: 5771
结束页码: 5777
语种: 英语
Scopus关键词: Average gradient
; Density structures
; Impact basins
; Landing site
; Seismic velocities
; South Pole-Aitken
; Spatial variations
; Surface porosity
; Moon
; gravity wave
; lunar crust
; planetary surface
; porosity
; porous medium
; spatial variation
英文摘要: We analyzed data from the Gravity Recovery and Interior Laboratory (GRAIL) mission using a localized admittance approach to map out spatial variations in the vertical density structure of the lunar crust. Mare regions are characterized by a distinct decrease in density with depth, while the farside is characterized by an increase in density with depth at an average gradient of ~35 kg m-3 km-1 and typical surface porosities of at least 20%. The Apollo 12 and 14 landing site region has a similar density structure to the farside, permitting a comparison with seismic velocity profiles. The interior of the South Pole-Aitken (SP-A) impact basin appears distinct with a near-surface low-density (porous) layer 2-3 times thinner than the rest of the farside. This result suggests that redistribution of material during the large SP-A impact likely played a major role in sculpting the lunar crust. © 2014. American Geophysical Union. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84906295056&doi=10.1002%2f2014GL060240&partnerID=40&md5=ff85018d3ab803cdcf8a277fa3c4cef8
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7105
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth and Planetary Sciences, University of California, Santa Cruz, CA, United States
Recommended Citation:
Besserer J.,Nimmo F.,Wieczorek M.A.,et al. GRAIL gravity constraints on the vertical and lateral density structure of the lunar crust[J]. Geophysical Research Letters,2014-01-01,41(16).