DOI: 10.1007/s00531-014-1072-z
Scopus记录号: 2-s2.0-84920809931
论文题名: Did the 1983 Charazeh earthquake trigger the destructive 1990 Rudbar earthquake?
作者: Sarkarinejad K. ; Ansari S.
刊名: International Journal of Earth Sciences
ISSN: 14373254
出版年: 2014
卷: 104, 期: 1 起始页码: 309
结束页码: 319
语种: 英语
英文关键词: Alborz Mountains
; Charazeh earthquake
; Coulomb stress
; Earthquake triggering
; Manjil thrust
Scopus关键词: Coulomb criterion
; earthquake event
; earthquake trigger
; seismicity
; stress change
; strike-slip fault
; thrust fault
; Elburz
; Gilan
; Iran
; Manjil
英文摘要: We have investigated the Coulomb stress change due to the 1983 Charazeh earthquake and its triggering effect on the 1990 Rudbar earthquake. Two stress increase lobes and two stress decrease lobes with N-S and NE-SW striking are detected, respectively. These lobes appear to be similar in size with the ones resulting from an equal length/width ratio of the Manjil thrust fault. The western section of the Kabateh segment is located in the increased Coulomb stress lobe and the eastern one in the decreased Coulomb stress lobe. The Coulomb stress change indicates that the 1983 main shock did not affect the Kelishom and Kashachal strike-slip faults. In the map view, we find that the 1990 Rudbar earthquake is located in the stress decrease lobe with <0.1 bar. The cross-sectional view of the calculated Coulomb stress change shows that the Rudbar main shock lies in the decreased Coulomb stress lobe. Also, we find that the low slip azimuth of the Manjil thrust fault, which associates with the negative normal stress and low shear stress, reduced the Coulomb stress change and inhibited the failure on the adjacent area. Therefore, we conclude that the 1983 Charazeh earthquake did not trigger the 1990 Rudbar destructive earthquake. We perceive that the events before and after the Charazeh main shock have not characteristic spatial distribution patterns and the seismicity after the main shock is not consistent with the Coulomb stress change. Therefore, the 1983 main shock, unlike the 1990 Rudbar earthquake, did not affect the seismicity patterns. © 2014, Springer-Verlag Berlin Heidelberg. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84920809931&doi=10.1007%2fs00531-014-1072-z&partnerID=40&md5=c2df4b4cda8b5aaad2ac08d54643dda2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/70371
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Earth Sciences, College of Sciences, Shiraz University, Shiraz, Iran
Recommended Citation:
Sarkarinejad K.,Ansari S.. Did the 1983 Charazeh earthquake trigger the destructive 1990 Rudbar earthquake?[J]. International Journal of Earth Sciences,2014-01-01,104(1)