| DOI: | 10.1002/grl.50561
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| 论文题名: | Low-frequency earthquakes in the Mexican sweet spot |
| 作者: | Frank W.B.; Shapiro N.M.; Kostoglodov V.; Husker A.L.; Campillo M.; Payero J.S.; Prieto G.A.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8983
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| EISSN: | 1944-8714
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| 出版年: | 2013
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| 卷: | 40, 期:11 | | 起始页码: | 2661
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| 结束页码: | 2666
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| 语种: | 英语
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| 英文关键词: | earthquakes
; low-frequency
; mexico
; slow-slip
; subduction
; tremor
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| Scopus关键词: | Low-frequency
; Me-xico
; slow-slip
; subduction
; tremor
; Earth sciences
; Geophysics
; Earthquakes
; earthquake hypocenter
; focal mechanism
; frequency-magnitude distribution
; P-wave
; S-wave
; seismogram
; signal-to-noise ratio
; stacking
; subduction
; Mexico [North America]
|
| 英文摘要: | We use data from the Meso-America Subduction Experiment to detect and locate low-frequency earthquakes (LFEs) in the Mexican subduction zone. We use visually-identified templates to perform a network waveform correlation search that produced ∼17,000 robustly detected LFEs that form 15 distinct families. Stacking an LFE family's corresponding detections results in seismograms with high signal-to-noise ratios and clear P and S wave arrivals; we use these travel times to locate the sources. The resulting locations superpose a previously identified region of permanent non-volcanic tremor (NVT) activity. Husker et al. (2012) called this region a Sweet Spot, suggesting that the local conditions are adequate to continuously generate NVT. The LFE hypocenters have been located at a depth of 40-45 km in an area that is surrounding the upper slab-plate interface. We characterize their focal mechanisms by comparing their stacked seismograms to synthetic seismograms. This analysis reveals a common low-dipping focal mechanism. © 2013 American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879947594&doi=10.1002%2fgrl.50561&partnerID=40&md5=2a6d8915fa536207867e1d378f339cb8
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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/6247
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Équipe de Sismologie, Institut de Physique du Globe de Paris, CNRS, 1, rue Jussieu, Paris, FR-75238 Paris, France
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| Recommended Citation: | |
Frank W.B.,Shapiro N.M.,Kostoglodov V.,et al. Low-frequency earthquakes in the Mexican sweet spot[J]. Geophysical Research Letters,2013-01-01,40(11).
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