DOI: 10.1002/2015GL064265
论文题名: Long-period ground motion simulation of a subduction earthquake using the offshore-onshore ambient seismic field
作者: Viens L. ; Miyake H. ; Koketsu K.
刊名: Geophysical Research Letters
ISSN: 0094-9351
EISSN: 1944-9082
出版年: 2015
卷: 42, 期: 13 起始页码: 5282
结束页码: 5289
语种: 英语
英文关键词: ground motion simulations
; impulse response functions
; ocean bottom seismometers
; offshore-onshore seismic field
; subduction earthquake
Scopus关键词: Earthquake effects
; Geophysics
; Hazards
; Impulse response
; Oceanography
; Seismic response
; Seismographs
; Seismology
; Structural analysis
; Tectonics
; Ground-motion simulation
; Impulse response functions
; Ocean bottom seismometer
; Seismic field
; Subduction earthquakes
; Earthquakes
; earthquake epicenter
; ground motion
; Love wave
; ocean bottom seismometer
; offshore engineering
; Rayleigh wave
; seismic hazard
; seismic velocity
; subduction
; temporal period
; China
; Nankai
; Tianjin
英文摘要: Large earthquakes that occur in subduction zones are likely to generate long-period ground motions that can cause severe damage even at great distances from the epicenter. We extracted surface-to-surface impulse response functions from the ambient seismic field recorded by offshore ocean bottom seismometers located atop the Nankai subduction zone and onshore stations. We showed that these offshore-onshore impulse response functions can be used to accurately simulate the long-period ground motions generated by an offshore moderate subduction earthquake. Moreover, we also found that the distributions of the earthquake and impulse response function pseudovelocity response spectra have similar maximum amplifications in the same area close to the earthquake epicenter. This suggests that the ambient seismic field recorded by the increasing number of ocean bottom seismometers around the world can be used to assess seismic hazard related to offshore subduction earthquakes without prior knowledge of the velocity structure. Key Points Rayleigh and Love waves recovery from the offshore-onshore ambient seismic field First demonstration of ground motion simulation using ocean bottom seismometers Large potential to assess seismic hazards of megathrust earthquakes. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938117695&doi=10.1002%2f2015GL064265&partnerID=40&md5=efc7ec03a1a3b93d2ce5a16e57b290f2
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8966
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Earthquake Research Institute, University of Tokyo, Tokyo, Japan
Recommended Citation:
Viens L.,Miyake H.,Koketsu K.. Long-period ground motion simulation of a subduction earthquake using the offshore-onshore ambient seismic field[J]. Geophysical Research Letters,2015-01-01,42(13).