DOI: 10.1002/grl.50976
论文题名: Scaling relations of seismic moment, rupture area, average slip, and asperity size for M∼9 subduction-zone earthquakes
作者: Murotani S. ; Satake K. ; Fujii Y.
刊名: Geophysical Research Letters
ISSN: 0094-8529
EISSN: 1944-8260
出版年: 2013
卷: 40, 期: 19 起始页码: 5070
结束页码: 5074
语种: 英语
英文关键词: asperity
; earthquake source model
; giant earthquakes
; scaling relations
; seismic moment
; tsunami hazard assessment
Scopus关键词: asperity
; Earthquake source models
; Scaling relations
; Seismic moment
; Tsunami hazards
; Hazards
; Tsunamis
; Earthquakes
; asperity
; geodesy
; hazard assessment
; rupture
; seismic moment
; slip rate
; source parameters
; subduction zone
; tsunami
; Japan
英文摘要: Scaling relations for seismic moment M0, rupture area S, average slip D, and asperity size Sa were obtained for large, great, and giant (Mw = 6.7-9.2) subduction-zone earthquakes. We compiled the source parameters for seven giant (Mw∼9) earthquakes globally for which the heterogeneous slip distributions were estimated from tsunami and geodetic data. We defined Sa for subfaults exhibiting slip greater than 1.5 times D. Adding 25 slip models of 10 great earthquakes around Japan, we recalculated regression relations for 32 slip models: S = 1.34 × 10 -10 M02/3, D = 1.66 × 10-7 M01/3, Sa = 2.81 × 10-11 M02/3, and Sa/S = 0.2, where S and S a are in square kilometers, M0 is in newton meters, and D is in meters. These scaling relations are very similar to those obtained by Murotani et al. (2008) for large and great earthquakes. Thus, both scaling relations can be used for future tsunami hazard assessment associated with a giant earthquake. Key Points The source scaling relations for M∼9 earthquakes are similar to those of M<8 Asperity area is 20% of source area on average regardless of earthquake size These relations can be used for tsunami modeling from giant earthquakes ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884932902&doi=10.1002%2fgrl.50976&partnerID=40&md5=4bbeeffe33e7e40cbeb6253d321d1415
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5793
Appears in Collections: 气候减缓与适应
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作者单位: Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan
Recommended Citation:
Murotani S.,Satake K.,Fujii Y.. Scaling relations of seismic moment, rupture area, average slip, and asperity size for M∼9 subduction-zone earthquakes[J]. Geophysical Research Letters,2013-01-01,40(19).