DOI: 10.1002/2016GL070774
论文题名: Bimaterial interfaces in the south San Andreas Fault with opposite velocity contrasts NW and SE from San Gorgonio Pass
作者: Share P.-E. ; Ben-Zion Y.
刊名: Geophysical Research Letters
ISSN: 0094-8500
EISSN: 1944-8231
出版年: 2016
卷: 43, 期: 20 起始页码: 10680
结束页码: 10687
语种: 英语
英文关键词: bimaterial interfaces
; fault zone headwaves
; likely rupture propagation
; San Gorgonio Pass
Scopus关键词: Faulting
; Seismic waves
; Seismology
; Strike-slip faults
; Bi-material interfaces
; Fault zone
; Rupture propagation
; San Gorgonio Pass
; Seismic velocities
; Tomographic imaging
; Velocity contrasts
; Velocity structure
; Velocity
英文摘要: Analysis of fault zone head waves indicates the existence of two deep large-scale bimaterial interfaces in the structure of the southern San Andreas Fault (SAF) with opposite sense of velocity contrast. One interface extends from the Cajon Pass area to the San Gorgonio Pass (SGP) region and is associated with a slower seismic velocity on the southwest side of the SAF. The second interface extends from the SGP region to the Coachella Valley and involves a slower seismic velocity on the northeast side. Tomographic imaging of alternating velocity structures supports the velocity contrast reversal across the SAF. The observations and expected properties of bimaterial ruptures suggest that earthquakes nucleating slightly to the NW and SE of SGP tend to propagate along the SAF in the opposite along-strike directions. This is consistent with geological and seismological evidence in the Mojave and southernmost sections of the SAF. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84995684312&doi=10.1002%2f2016GL070774&partnerID=40&md5=832d81c3267eaa7b21b0a86fe6ecc427
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9463
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: Department of Earth Sciences, University of Southern California, Los Angeles, CA, United States
Recommended Citation:
Share P.-E.,Ben-Zion Y.. Bimaterial interfaces in the south San Andreas Fault with opposite velocity contrasts NW and SE from San Gorgonio Pass[J]. Geophysical Research Letters,2016-01-01,43(20).