| DOI: | 10.1002/2015GL064995
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| 论文题名: | Integrated seismic source model of the 2015 Gorkha, Nepal, earthquake |
| 作者: | Yagi Y.; Okuwaki R.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8610
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| EISSN: | 1944-8341
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| 出版年: | 2015
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| 卷: | 42, 期:15 | | 起始页码: | 6229
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| 结束页码: | 6235
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| 语种: | 英语
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| 英文关键词: | 2015 Nepal earthquake
; high-frequency source
; integrated seismic source model
; slip rate
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| Scopus关键词: | Drops
; Fracture
; Fracture energy
; Geophysics
; Seismic waves
; Seismology
; Uncertainty analysis
; Back-projection methods
; High frequency HF
; High-frequency radiation
; Radiation distribution
; Rupture propagation
; Seismic source
; Slip rates
; Waveform inversion
; Earthquakes
; aftershock
; earthquake damage
; earthquake event
; earthquake hypocenter
; earthquake rupture
; numerical model
; P-wave
; seismic source
; slip rate
; teleseismic wave
; Bagmati
; Gandaki
; Gorkha
; Kathmandu
; Nepal
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| 英文摘要: | We compared spatiotemporal slip-rate and high-frequency (around 1 Hz) radiation distributions from teleseismic P wave data to infer the seismic rupture process of the 2015 Gorkha, Nepal, earthquake. For these estimates, we applied a novel waveform inversion formulation that mitigates the effect of Green's functions uncertainty and a hybrid backprojection method that mitigates contamination by depth phases. Our model showed that the dynamic rupture front propagated eastward from the hypocenter at 3.0 km/s and triggered a large-slip event centered about 50 km to the east. It also showed that the large-slip event included a rapid rupture acceleration event and an irregular deceleration of rupture propagation before the rupture termination. Heterogeneity of the stress drop or fracture energy in the eastern part of the rupture area, where aftershock activity was high, inhibited rupture growth. High-frequency radiation sources tended to be in the deeper part of the large-slip area, which suggests that heterogeneity of the stress drop or fracture energy there may have contributed to the damage in and around Kathmandu. ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940447372&doi=10.1002%2f2015GL064995&partnerID=40&md5=0d8dadec641c8555eb63070078a683d3
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8226
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| 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: | Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Japan
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| Recommended Citation: | |
Yagi Y.,Okuwaki R.. Integrated seismic source model of the 2015 Gorkha, Nepal, earthquake[J]. Geophysical Research Letters,2015-01-01,42(15).
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