DOI: 10.1002/grl.50254
论文题名: Remotely triggered micro-earthquakes in the Larderello-Travale Geothermal Field (Italy) following the 2012 May 20, Mw 5.9 Po-plain earthquake
作者: Saccorotti G. ; Piccinini D. ; Mazzarini F. ; Zupo M.
刊名: Geophysical Research Letters
ISSN: 0094-9245
EISSN: 1944-8976
出版年: 2013
卷: 40, 期: 5 起始页码: 835
结束页码: 840
语种: 英语
英文关键词: dynamic triggering
; geothermal field
Scopus关键词: Crustal fluids
; Dynamic triggering
; Geysers , California
; Micro-earthquakes
; Structural setting
; Triggered Earthquakes
; Triggering mechanism
; Triggering threshold
; Geothermal fields
; Rayleigh waves
; Earthquakes
; crustal movement
; earthquake
; fault
; geothermal phenomena
; Rayleigh wave
; trigger mechanism
; Italy
英文摘要: We report observations of remotely triggered earthquakes at the Larderello-Travale Geothermal Field (Italy), following the Mw = 5.9 Po-Plain earthquake on 20 May 2012. Four distinct triggered events are recognized within a short (∼25 s) time interval accompanying the sweeping of ∼10s Rayleigh waves. Triggered sources are clustered at depths in between 4 km and 6 km. The magnitude and distance of the mainshock agree well with the triggering threshold previously proposed for The Geysers, California. For three out of four earthquakes, the Rayleigh wave dynamic stresses are mostly associated with extensional vertical (szz) and shear (sxz) components, which range up to 5 KPa. Once considering the structural setting of the area, the most likely triggering mechanism involves the rupture of normal faults which are kept close to failure by high-pressure crustal fluids. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876808808&doi=10.1002%2fgrl.50254&partnerID=40&md5=f777ac0cb4864f332af269260d85eeb2
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6509
Appears in Collections: 气候减缓与适应
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作者单位: Istituto Nazionale di Geofisica e Vulcanologia, Via U. della Faggiola, 32, 56126 Pisa, Italy
Recommended Citation:
Saccorotti G.,Piccinini D.,Mazzarini F.,et al. Remotely triggered micro-earthquakes in the Larderello-Travale Geothermal Field (Italy) following the 2012 May 20, Mw 5.9 Po-plain earthquake[J]. Geophysical Research Letters,2013-01-01,40(5).