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DOI: 10.1002/2015GL064934
论文题名:
An empirical study of the distribution of earthquakes with respect to rock type and depth
作者: Tal Y.; Hager B.H.
刊名: Geophysical Research Letters
ISSN: 0094-9359
EISSN: 1944-9090
出版年: 2015
卷: 42, 期:18
起始页码: 7406
结束页码: 7413
语种: 英语
英文关键词: 3-D geologic models ; California seismicity ; earthquake density ; Gutenberg-Richter
Scopus关键词: Fault slips ; Faulting ; Geologic models ; Geophysics ; Rocks ; Sedimentary rocks ; Sedimentology ; 3D geologic models ; California ; Depth dependents ; Empirical studies ; Frictional properties ; Gutenberg-Richter ; San Francisco Bay ; Southern California ; Earthquakes ; basement (building) ; empirical analysis ; San Francisco earthquake 1906 ; sedimentary rock ; seismicity ; three-dimensional modeling ; California ; San Francisco Bay ; United States
英文摘要: Whether fault slip occurs seismically or aseismically depends on the frictional properties of the fault, which might be expected to depend on rock type and depth, as well as other factors. To examine the effect of rock type and depth on the distribution of earthquakes, we compare geologic models of the San Francisco Bay and the Southern California regions to the distribution of seismicity. We normalize the number of earthquakes within each rock type and depth interval by the corresponding volume to determine the earthquake density. Earthquake density is determined primarily by depth, while whether the rock is sedimentary or basement has only a secondary, depth-dependent effect on the earthquake density. At very shallow depths, there is no difference in earthquake density between sedimentary and basement rocks. The earthquake density of basement rocks increases with depth more rapidly than that of sedimentary rocks to a similar but shallower maximum. © 2015 American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945462891&doi=10.1002%2f2015GL064934&partnerID=40&md5=a4b00232c7b0bace09c3534f60e1c56b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8974
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: Earth Resources Laboratory, Department of Earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology, Cambridge, MA, United States

Recommended Citation:
Tal Y.,Hager B.H.. An empirical study of the distribution of earthquakes with respect to rock type and depth[J]. Geophysical Research Letters,2015-01-01,42(18).
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