DOI: 10.1002/2014GL061193
论文题名: Shallow S wave attenuation and actively degassing magma beneath Taal Volcano, Philippines
作者: Kumagai H. ; Lacson R. ; Jr. ; Maeda Y. ; Figueroa M.S. ; II ; Yamashina T.
刊名: Geophysical Research Letters
ISSN: 0094-9740
EISSN: 1944-9471
出版年: 2014
卷: 41, 期: 19 起始页码: 6681
结束页码: 6688
语种: 英语
英文关键词: attenuation
; magma
; Q factor
; source location
; volcano-tectonic event
Scopus关键词: Degassing
; Seismology
; Tectonics
; Attenuation
; Magma
; Q-factors
; Source location
; Tectonic events
; Volcanoes
; degassing
; location theory
; S-wave
; volcanic eruption
; wave attenuation
; Batangas
; Luzon
; Philippines
; Philippines
; Taal
英文摘要: Taal Volcano, Philippines, is one of the world's most dangerous volcanoes given its history of explosive eruptions and its close proximity to populated areas. A real-time broadband seismic network was recently deployed and has detected volcano-tectonic events beneath Taal. Our source location analysis of these volcano-tectonic events, using onset arrival times and high-frequency seismic amplitudes, points to the existence of a region of strong attenuation near the ground surface beneath the east flank of Volcano Island in Taal Lake. This region is beneath the active fumarolic area and above sources of pressure contributing inflation and deflation, and it coincides with a region of high electrical conductivity. The high-attenuation region matches that inferred from an active-seismic survey conducted at Taal in 1993. These features strongly suggest that the high-attenuation region represents an actively degassing magma body near the surface that has existed for more than 20 years. Key Points Source locations of volcano-tectonic events at Taal Volcano were analyzedA region of strong S wave attenuation was estimated near the ground surfaceThis anomaly is interpreted to be caused by actively degassing magma ©2014. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911401155&doi=10.1002%2f2014GL061193&partnerID=40&md5=cbdb9197308dff57706824c246afb6ce
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7004
Appears in Collections: 气候减缓与适应
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作者单位: Graduate School of Environmental Studies, Nagoya University, Nagoya, Japan
Recommended Citation:
Kumagai H.,Lacson R.,Jr.,et al. Shallow S wave attenuation and actively degassing magma beneath Taal Volcano, Philippines[J]. Geophysical Research Letters,2014-01-01,41(19).