| DOI: | 10.1002/2016GL070347
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| 论文题名: | Dynamic triggering of deep earthquakes within a fossil slab |
| 作者: | Cai C.; Wiens D.A.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8612
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| EISSN: | 1944-8343
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| 出版年: | 2016
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| 卷: | 43, 期:18 | | 起始页码: | 9492
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| 结束页码: | 9499
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| 语种: | 英语
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| 英文关键词: | deep earthquake
; dynamic triggering
; fossil slab
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| Scopus关键词: | Geophysics
; Coulomb stress changes
; Critical stress
; Deep earthquakes
; Dynamic triggering
; Earthquake nucleation
; Fossil slab
; Linear feature
; Subduction zones
; Earthquakes
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| 英文摘要: | The 9 November 2009 Mw 7.3 Fiji deep earthquake is the largest event in a region west of the Tonga slab defined by scattered seismicity and velocity anomalies. The main shock rupture was compact, but the aftershocks were distributed along a linear feature at distances of up to 126 km. The aftershocks and some background seismicity define a sharp northern boundary to the zone of outboard earthquakes, extending westward toward the Vitiaz deep earthquake cluster. The northern earthquake lineament is geometrically similar to tectonic reconstructions of the relict Vitiaz subduction zone at 8–10 Ma, suggesting the earthquakes are occurring in the final portion of the slab subducted at the now inactive Vitiaz trench. A Coulomb stress change calculation suggests many of the aftershocks were dynamically triggered. We propose that fossil slabs contain material that is too warm for earthquake nucleation but may be near the critical stress susceptible to dynamic triggering. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988026225&doi=10.1002%2f2016GL070347&partnerID=40&md5=c18c1b20dd1b9d3564f81d37f2cc7451
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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/9575
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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: | Department of Earth and Planetary Sciences, Washington University, St. Louis, MO, United States
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| Recommended Citation: | |
Cai C.,Wiens D.A.. Dynamic triggering of deep earthquakes within a fossil slab[J]. Geophysical Research Letters,2016-01-01,43(18).
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