DOI: 10.1002/2015GL063575
论文题名: Potential for larger earthquakes in the East San Francisco Bay Area due to the direct connection between the Hayward and Calaveras Faults
作者: Chaussard E. ; Bürgmann R. ; Fattahi H. ; Nadeau R.M. ; Taira T. ; Johnson C.W. ; Johanson I.
刊名: Geophysical Research Letters
ISSN: 0094-8766
EISSN: 1944-8497
出版年: 2015
卷: 42, 期: 8 起始页码: 2734
结束页码: 2741
语种: 英语
英文关键词: characteristically repeating earthquakes
; connection
; creep
; Hayward-Calaveras Faults
; InSAR
Scopus关键词: Creep
; Earthquakes
; Hazards
; Seismic response
; Seismology
; Strike-slip faults
; Synthetic aperture radar
; Connection
; Earthquake rupture
; InSAR
; Interferometric synthetic aperture radars
; Micro-earthquakes
; Repeating earthquake
; San Francisco Bay
; Seismic hazard assessment
; Faulting
; creep
; earthquake
; earthquake magnitude
; earthquake rupture
; fault zone
; microearthquake
; radar imagery
; seismic hazard
; water depth
; California
; San Francisco Bay
; United States
英文摘要: The Hayward and Calaveras Faults, two strike-slip faults of the San Andreas System located in the East San Francisco Bay Area, are commonly considered independent structures for seismic hazard assessment. We use Interferometric Synthetic Aperture RADAR to show that surface creep on the Hayward Fault continues 15 km farther south than previously known, revealing new potential for rupture and damage south of Fremont. The extended trace of the Hayward Fault, also illuminated by shallow repeating micro-earthquakes, documents a surface connection with the Calaveras Fault. At depths greater than 3-5 km, repeating micro-earthquakes located 10 km north of the surface connection highlight the 3-D wedge geometry of the junction. Our new model of the Hayward and Calaveras Faults argues that they should be treated as a single system with potential for earthquake ruptures generating events with magnitudes greater than 7, posing a higher seismic hazard to the East San Francisco Bay Area than previously considered. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929504023&doi=10.1002%2f2015GL063575&partnerID=40&md5=990ad8d0cf31ebd20359f9ba5558d81e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8382
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 Science, University of California, Berkeley, CA, United States
Recommended Citation:
Chaussard E.,Bürgmann R.,Fattahi H.,et al. Potential for larger earthquakes in the East San Francisco Bay Area due to the direct connection between the Hayward and Calaveras Faults[J]. Geophysical Research Letters,2015-01-01,42(8).