DOI: 10.1002/2015GL065277
论文题名: Delayed dynamic triggering of deep tremor along the Parkfield-Cholame section of the San Andreas Fault following the 2014 M6.0 South Napa earthquake
作者: Peng Z. ; Shelly D.R. ; Ellsworth W.L.
刊名: Geophysical Research Letters
ISSN: 0094-8566
EISSN: 1944-8297
出版年: 2015
卷: 42, 期: 19 起始页码: 7916
结束页码: 7922
语种: 英语
英文关键词: 2014 South Napa earthquake
; Parkfield
; tremor
; triggering
Scopus关键词: Earthquakes
; Geophysics
; Strike-slip faults
; Surface waves
; Dynamic triggering
; Parkfield
; San Andreas fault
; Slow slip events
; Subduction zones
; Tectonic tremors
; Tremor
; Triggering
; Faulting
; earthquake event
; earthquake magnitude
; earthquake trigger
; fault zone
; slip
; strike (geology)
; subduction zone
; surface wave
; California
; Cholame
; Napa County
; Parkfield
; San Andreas
; United States
英文摘要: Large, distant earthquakes are known to trigger deep tectonic tremor along the San Andreas Fault and in subduction zones. However, there are relatively few observations of triggering from regional distance earthquakes. Here we show that a small tremor episode about 12-18 km NW of Parkfield was triggered during and immediately following the passage of surface waves from the 2014 Mw 6.0 South Napa main shock. More notably, a major tremor episode followed, beginning about 12 h later, and centered SE of Parkfield near Cholame. This major episode is one of the largest seen over the past several years, containing intense activity for ~3 days and taking more than 3 weeks to return to background levels. This episode showed systematic along-strike migration at ~5 km/d, suggesting that it was driven by a slow-slip event. Our results suggest that moderate-size earthquakes are capable of triggering major tremor and deep slow slip at regional distances. Key Points 2014 South Napa earthquake triggered tremor at Parkfield A major tremor sequence occurred 10 h later and lasted more than 3 weeks The major tremor sequence was delay triggered and likely driven by a slow-slip event © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84947036426&doi=10.1002%2f2015GL065277&partnerID=40&md5=83b707a82a57808889e77542e10d181e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8182
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: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, Atlanta, GA, United States
Recommended Citation:
Peng Z.,Shelly D.R.,Ellsworth W.L.. Delayed dynamic triggering of deep tremor along the Parkfield-Cholame section of the San Andreas Fault following the 2014 M6.0 South Napa earthquake[J]. Geophysical Research Letters,2015-01-01,42(19).