DOI: 10.1002/2015GL063293
论文题名: Two-dimensional seismic attenuation images of Stromboli Island using active data
作者: Prudencio J. ; Del Pezzo E. ; Ibáñez J.M. ; Giampiccolo E. ; Patané D.
刊名: Geophysical Research Letters
ISSN: 0094-8863
EISSN: 1944-8594
出版年: 2015
卷: 42, 期: 6 起始页码: 1717
结束页码: 1724
语种: 英语
英文关键词: scattering
; seismic attenuation
; seismic tomography
; volcano seismology
; wave propagation
Scopus关键词: Frequency bands
; Scattering
; Seismic prospecting
; Seismographs
; Separation
; Volcanoes
; Wave propagation
; Diffusion approximations
; Energy-transport equations
; Geological heterogeneities
; Ocean bottom seismometer
; Scattering attenuation
; Seismic attenuation
; Seismic tomography
; Volcano seismology
; Seismology
; coda
; estimation method
; heterogeneity
; island
; numerical method
; seismic attenuation
; volcanic earthquake
英文摘要: In this work we present intrinsic and scattering seismic attenuation 2-D images of Stromboli Volcano. We used 21,953 waveforms from air gun shots fired by an oceanographic vessel and recorded at 33 inland and 10 ocean bottom seismometer seismic stations. Coda wave envelopes of the filtered seismic traces were fitted to the energy transport equation in the diffusion approximation, obtaining a couple of separate Qi and Qs in six frequency bands. Using numerically estimated sensitivity kernels for coda waves, separate images of each quality factor were produced. Results appear stable and robust. They show that scattering attenuation prevails over intrinsic attenuation. The scattering pattern shows a strong concordance with the tectonic lineaments in the area, while an area of high total attenuation coincides with the zone where most of the volcanic activity occurs. Our results provide evidence that the most important attenuation effects in volcanic areas are associated with the presence of geological heterogeneities. Key Points Separation of Qi and Qs in volcanic regions Regionalization of attenuation values Relationship with volcanic structures and dynamics ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927717746&doi=10.1002%2f2015GL063293&partnerID=40&md5=504aaf44883e9b1829c8700d2be9b0cd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8479
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: Instituto Andaluz de Geofísica, Granade, Spain
Recommended Citation:
Prudencio J.,Del Pezzo E.,Ibáñez J.M.,et al. Two-dimensional seismic attenuation images of Stromboli Island using active data[J]. Geophysical Research Letters,2015-01-01,42(6).