DOI: 10.1002/2016GL070883
论文题名: The shallow elastic structure of the lunar crust: New insights from seismic wavefield gradient analysis
作者: Sollberger D. ; Schmelzbach C. ; Robertsson J.O.A. ; Greenhalgh S.A. ; Nakamura Y. ; Khan A.
刊名: Geophysical Research Letters
ISSN: 0094-8520
EISSN: 1944-8251
出版年: 2016
卷: 43, 期: 19 起始页码: 10078
结束页码: 10087
语种: 英语
英文关键词: gradiometry
; lunar crust
; Moon
; rotational seismology
; seismic
; seismology
Scopus关键词: Computational geometry
; Lithology
; Lunar missions
; Moon
; Seismic prospecting
; Shear flow
; Shear waves
; Analysis techniques
; Elastic structures
; Gradiometry
; Lunar crusts
; Seismic
; Seismic exploration
; Seismic wavefields
; Shear wave velocity
; Seismology
英文摘要: Enigmatic lunar seismograms recorded during the Apollo 17 mission in 1972 have so far precluded the identification of shear-wave arrivals and hence the construction of a comprehensive elastic model of the shallow lunar subsurface. Here, for the first time, we extract shear-wave information from the Apollo active seismic data using a novel waveform analysis technique based on spatial seismic wavefield gradients. The star-like recording geometry of the active seismic experiment lends itself surprisingly well to compute spatial wavefield gradients and rotational ground motion as a function of time. These observables, which are new to seismic exploration in general, allowed us to identify shear waves in the complex lunar seismograms, and to derive a new model of seismic compressional and shear-wave velocities in the shallow lunar crust, critical to understand its lithology and constitution, and its impact on other geophysical investigations of the Moon's deep interior. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990911239&doi=10.1002%2f2016GL070883&partnerID=40&md5=98920582992182eebace17921f8898cb
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9483
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Institute of Geophysics, ETH Zurich, Zurich, Switzerland
Recommended Citation:
Sollberger D.,Schmelzbach C.,Robertsson J.O.A.,et al. The shallow elastic structure of the lunar crust: New insights from seismic wavefield gradient analysis[J]. Geophysical Research Letters,2016-01-01,43(19).