DOI: 10.1002/2015GL063589
论文题名: Deformation and seismicity near Sabancaya volcano, southern Peru, from 2002 to 2015
作者: Jay J.A. ; Delgado F.J. ; Torres J.L. ; Pritchard M.E. ; Macedo O. ; Aguilar V.
刊名: Geophysical Research Letters
ISSN: 0094-8713
EISSN: 1944-8444
出版年: 2015
卷: 42, 期: 8 起始页码: 2780
结束页码: 2788
语种: 英语
英文关键词: InSAR
; Sabancaya volcano
; volcano deformation
; volcano seismicity
Scopus关键词: Deformation
; Earthquakes
; Faulting
; Seismology
; Synthetic aperture radar
; Tectonics
; Volcanoes
; Earthquake sequences
; Earthquake swarms
; InSAR
; Interferometric synthetic aperture radars
; Magmatic sources
; Magmatic systems
; Regional tectonics
; Volcano-seismicity
; Fault slips
; deformation
; earthquake event
; fault slip
; seismic data
; seismicity
; volcanic eruption
; Arequipa [Peru]
; Cordillera Occidental [Peru]
; Nevado Sabancaya
; Peru
; Peru
英文摘要: We use interferometric synthetic aperture radar (InSAR) and local seismic data to investigate the cause of earthquake sequences near Sabancaya volcano in southern Peru from 2002 to 2014, with a particular focus on events leading up to the August 2014 phreatic eruption. InSAR-observed deformation associated with earthquake swarms in late 2002, February 2013, and July 2013 is modeled by fault slip, with no need for magmatic sources to explain the deformation. The majority of the seismicity is an expression of the regional tectonic system, which is characterized by E-W trending normal faults, but a link to the magmatic system is possible. The Mw 5.9 earthquake on 17 July 2013 occurred on a previously unmapped normal fault that continued to deform in the months following the earthquake. An increase in long period and hybrid seismicity and changes in fumarolic emissions in 2013-2014 culminating in the August 2014 eruption indicates the involvement of both tectonic and magmatic systems. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84929520018&doi=10.1002%2f2015GL063589&partnerID=40&md5=4de3f9690a144308aa95d36b17036bca
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8329
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 Atmospheric Sciences, Cornell University, Ithaca, NY, United States
Recommended Citation:
Jay J.A.,Delgado F.J.,Torres J.L.,et al. Deformation and seismicity near Sabancaya volcano, southern Peru, from 2002 to 2015[J]. Geophysical Research Letters,2015-01-01,42(8).