| DOI: | 10.1002/2015GL065336
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| 论文题名: | Dynamics of the 2015 M7.8 Nepal earthquake |
| 作者: | Denolle M.A.; Fan W.; Shearer P.M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9291
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| EISSN: | 1944-9022
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| 出版年: | 2015
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| 卷: | 42, 期:18 | | 起始页码: | 7467
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| 结束页码: | 7475
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| 语种: | 英语
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| 英文关键词: | Nepal Earthquake
; Radiated energy
; shallow earthquake
; stress drop
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| Scopus关键词: | Drops
; Dynamics
; Geometry
; Geophysics
; Seismic waves
; Earthquake dynamics
; Frequency dependent
; Main himalayan thrusts
; Radiated energies
; Regional earthquakes
; Shallow earthquakes
; Spectral measurement
; Stress drop
; Earthquakes
; azimuth
; earthquake damage
; frequency dependence
; geometry
; global change
; regional geology
; temporal variation
; thrust
; Bagmati
; Kathmandu
; Nepal
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| 英文摘要: | The 2015 M7.8 Nepal earthquake ruptured part of the Main Himalayan Thrust beneath Kathmandu. To study the dynamics of this event, we compute P wave spectra of the main shock and of two large aftershocks to estimate stress drop and radiated energy. We find that surface reflections (depth phases) of these shallow earthquakes produce interference that severely biases spectral measurements unless corrections are applied. Measures of earthquake dynamics for the main shock are within the range of estimates from global and regional earthquakes. We explore the azimuthal and temporal variations of radiated energy and highlight unique aspects of the M7.8 rupture. The beginning of the earthquake likely experienced a dynamic weakening mechanism immediately followed by an abrupt change in fault geometry. Correlation of backprojection results with frequency-dependent variations in the radiated energy rate and with the suggested geometry of the Main Himalayan Thrust yields new constraints on dynamic ruptures through geometrical barriers. © 2015 American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945494416&doi=10.1002%2f2015GL065336&partnerID=40&md5=b14dbdcd7b7a8e7c7da47840c736851e
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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/8907
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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: | Scripps Institution of Oceanography, University of California, San Diego, CA, United States
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| Recommended Citation: | |
Denolle M.A.,Fan W.,Shearer P.M.. Dynamics of the 2015 M7.8 Nepal earthquake[J]. Geophysical Research Letters,2015-01-01,42(18).
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