DOI: 10.1002/2014GL059425
论文题名: Long-period seismic amplification in the Kanto Basin from the ambient seismic field
作者: Denolle M.A. ; Miyake H. ; Nakagawa S. ; Hirata N. ; Beroza G.C.
刊名: Geophysical Research Letters
ISSN: 0094-10186
EISSN: 1944-9917
出版年: 2014
卷: 41, 期: 7 起始页码: 2319
结束页码: 2325
语种: 英语
英文关键词: ambient seismic field
; basin seismic amplification
; Green's functions
; strong ground motion prediction
Scopus关键词: Amplification
; Earthquake effects
; Green's function
; Seismic waves
; Seismographs
; Settling tanks
; Wave propagation
; Ground-motion prediction equations
; Linear relationships
; Propagation effect
; Seismic field
; Seismic observation
; Seismograph networks
; Shallow boreholes
; Strong ground motion
; Seismology
; amplification
; borehole
; Green function
; ground motion
; long-term change
; sedimentary basin
; seismic hazard
; seismic wave
; seismic zone
; seismograph
; wave direction
; Honshu
; Japan
; Kanto
英文摘要: Tokyo, like many seismically threatened cities, is situated atop a sedimentary basin that has the potential to trap and amplify seismic waves from earthquakes. We study amplification in the Kanto Basin by exploiting the information carried by the ambient seismic field. We use 375 seismic stations from the high sensitivity seismograph network across central Honshu as virtual sources and 296 seismic stations of the Metropolitan Seismic Observation network shallow borehole seismometers within the basin as receivers to map the basin response. We find a linear relationship between ground motion and basin depth at periods of 2-10 s that could be used to represent 3-D basin effects in ground motion prediction equations. We also find that the strength of basin seismic amplification depends strongly on the direction of illumination by seismic waves. Key Points Combine dense networks to construct ambient seismic field Green's functions The ambient seismic field contains sedimentary basin wave propagation effects Seismic amplification strongly depends on earthquake source location © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84897352111&doi=10.1002%2f2014GL059425&partnerID=40&md5=67c1fe8dfe94aed9859d7c5b6f67eae0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7450
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geophysics, Stanford University, Stanford, CA, United States
Recommended Citation:
Denolle M.A.,Miyake H.,Nakagawa S.,et al. Long-period seismic amplification in the Kanto Basin from the ambient seismic field[J]. Geophysical Research Letters,2014-01-01,41(7).