DOI: 10.1007/s11069-020-04426-6
论文题名: Western Mexico seismic source model for the seismic hazard assessment of the Jalisco-Colima-Michoacán region
作者: Sawires R. ; Santoyo M.A. ; Peláez J.A. ; Henares J.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2021
卷: 105, 期: 3 起始页码: 2819
结束页码: 2867
语种: 英语
中文关键词: Earthquakes
; Jalisco-Colima-Michoacán region
; Seismic sources
; Seismicity parameters
; Stress regime
; Western Mexico
英文关键词: earthquake catalogue
; earthquake event
; hazard assessment
; seismic hazard
; seismic source
; seismicity
; spreading center
; subduction
; subduction zone
; triple junction
; Colima
; Jalisco
; Mexico [North America]
; Michoacan
英文摘要: The Mexican subduction zone, the Gulf of California spreading center, as well as the triple junction point around the Jalisco and the Michoacán Blocks, represents the most active seismogenic belts inducing seismic hazard in the Jalisco-Colima-Michoacán region. Herein, considering such seismotectonic setting, we develop a new seismic source model for the surrounding of Jalisco-Colima-Michoacán to be used as an input in the assessment of the seismic hazard of the region. This new model is based on revised Poissonian earthquake (1787–2018) and focal mechanism (1963–2015) catalogs, as well as crustal thickness data and all information about the geometry of the subducting slabs. The proposed model consists of a total of 37 area sources, comprising all the three different possible categories of seismicity: shallow crustal, interface subduction, and inslab earthquakes. A special care was taken during the delimitation of the boundaries for each area source to ensure that they represent a relatively homogeneous seismotectonic region and to include a relatively large number of earthquakes that enable us to compute as reliable as possible seismicity parameters. Although the sources were delimited following the standard criteria of assessing the probabilistic seismic hazard, they are also characterized in terms of their seismicity parameters (annual rate of earthquakes above Mw 4.0, b-value, and maximum expected magnitude), mean seismogenic depth, as well as the predominant stress regime. The proposed model defines and characterizes regionalized potential seismic sources that can contribute to the seismic hazard at the Jalisco-Colima-Michoacán region, providing the necessary information for seismic hazard estimates. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/169347
Appears in Collections: 气候变化与战略
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作者单位: Institute of Geophysics - Morelia Campus, National Autonomous University of Mexico (UNAM), Morelia, Michoacán 58190, Mexico; Department of Geology, Faculty of Science, Assiut University, Assiut, 71516, Egypt; Department of Physics, University of Jaén, Jaén, 23071, Spain; International University of La Rioja, Logroño, 26006, Spain
Recommended Citation:
Sawires R.,Santoyo M.A.,Peláez J.A.,et al. Western Mexico seismic source model for the seismic hazard assessment of the Jalisco-Colima-Michoacán region[J]. Natural Hazards,2021-01-01,105(3)