globalchange  > 科学计划与规划
DOI: 10.1002/2016GL070684
论文题名:
Coseismic slip and afterslip of the 2015 Mw 8.3 Illapel (Chile) earthquake determined from continuous GPS data
作者: Shrivastava M.N.; González G.; Moreno M.; Chlieh M.; Salazar P.; Reddy C.D.; Báez J.C.; Yáñez G.; González J.; de la Llera J.C.
刊名: Geophysical Research Letters
ISSN: 0094-8458
EISSN: 1944-8189
出版年: 2016
卷: 43, 期:20
起始页码: 10710
结束页码: 10719
语种: 英语
英文关键词: afterslip ; coseismic slip ; Coulomb stress change ; Illapel earthquake ; seismic and aseismic slip
Scopus关键词: Geophysics ; Seismology ; Tectonics ; afterslip ; Coseismic slips ; Coulomb stress changes ; Earthquake rupture ; Nazca plate ; Postseismic deformation ; seismic and aseismic slip ; Seismic moment ; Earthquakes
英文摘要: We analyzed the coseismic and early postseismic deformation of the 2015, Mw 8.3 Illapel earthquake by inverting 13 continuous GPS time series. The seismic rupture concentrated in a shallow (<20 km depth) and 100 km long asperity, which slipped up to 8 m, releasing a seismic moment of 3.6 × 1021 Nm (Mw = 8.3). After 43 days, postseismic afterslip encompassed the coseismic rupture. Afterslip concentrated in two main patches of 0.50 m between 20 and 40 km depth along the northern and southern ends of the rupture, partially overlapping the coseismic slip. Afterslip and aftershocks confined to region of positive Coulomb stress change, promoted by the coseismic slip. The early postseismic afterslip was accommodated ~53% aseismically and ~47% seismically by aftershocks. The Illapel earthquake rupture is confined by two low interseismic coupling zones, which coincide with two major features of the subducting Nazca Plate, the Challenger Fault Zone and Juan Fernandez Ridge. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84995581697&doi=10.1002%2f2016GL070684&partnerID=40&md5=dc668f050db719da857566c340465e19
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9421
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: National Research Center for Integrated Natural Disaster Management, Santiago, Chile

Recommended Citation:
Shrivastava M.N.,González G.,Moreno M.,et al. Coseismic slip and afterslip of the 2015 Mw 8.3 Illapel (Chile) earthquake determined from continuous GPS data[J]. Geophysical Research Letters,2016-01-01,43(20).
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