DOI: 10.1002/2016GL070427
论文题名: Relocation of long-period (LP) seismic events reveals en echelon fractures in the upper edifice of Turrialba volcano, Costa Rica
作者: Zecevic M. ; De Barros L. ; Eyre T.S. ; Lokmer I. ; Bean C.J.
刊名: Geophysical Research Letters
ISSN: 0094-8552
EISSN: 1944-8283
出版年: 2016
卷: 43, 期: 19 起始页码: 10105
结束页码: 10114
语种: 英语
英文关键词: deformation
; en echelon fractures
; long-period events
; relocation
; Turrialba volcano
; volcano seismology
Scopus关键词: Buildings
; Deformation
; Fracture
; Location
; Relocation
; Seismology
; Long-period events
; Rock layer interfaces
; Source mechanisms
; Spatial resolution
; Synthetic datasets
; Tensile fractures
; Volcano seismology
; Waveform similarity
; Volcanoes
英文摘要: Swarms of long-period (LP) events were recorded on Turrialba volcano, Costa Rica, during a seismic field experiment in 2009. Families of LP events were previously identified and located using a joint inversion for source location and mechanism; however, the spatial resolution of the obtained locations was not sufficient for imaging the structures on which they occur. Using a waveform similarity-based location method, we take advantage of the joint location-mechanism inversion by relocating events around the obtained familial location. The location method is successfully tested on a synthetic data set and is then applied to the Turrialba LP data set. The relocated events are jointly interpreted with their source mechanisms and reveal an en echelon structure within the upper edifice of the volcano. This can be interpreted as a response of a shearing band with high fluid pressure inducing tensile fractures at unconsolidated rock layer interfaces within the upper edifice of the volcano. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84990885005&doi=10.1002%2f2016GL070427&partnerID=40&md5=506ab8fab0d0a980c794b3519df89720
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9515
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: Seismology Laboratory, School of Geological Sciences, University College Dublin, Dublin, Ireland
Recommended Citation:
Zecevic M.,De Barros L.,Eyre T.S.,et al. Relocation of long-period (LP) seismic events reveals en echelon fractures in the upper edifice of Turrialba volcano, Costa Rica[J]. Geophysical Research Letters,2016-01-01,43(19).