DOI: 10.1002/2015GL066997
论文题名: Body and surface wave reconstruction from seismic noise correlations between arrays at Piton de la Fournaise volcano
作者: Nakata N. ; Boué P. ; Brenguier F. ; Roux P. ; Ferrazzini V. ; Campillo M.
刊名: Geophysical Research Letters
ISSN: 0094-9414
EISSN: 1944-9145
出版年: 2016
卷: 43, 期: 3 起始页码: 1047
结束页码: 1054
语种: 英语
英文关键词: ambient noise
; array processing
; beamforming
; body wave
; correlation
; volcano
Scopus关键词: Acoustic noise
; Array processing
; Beamforming
; Correlation methods
; Seismology
; Surface waves
; Volcanoes
; Ambient noise
; Ambient seismic noise
; Body waves
; Cross correlations
; Magmatic systems
; Piton de la Fournaise volcano
; Processing technique
; Wave reconstruction
; Surface reconstruction
; ambient noise
; body wave
; correlation
; geophysical array
; reconstruction
; seismic noise
; signal processing
; surface wave
; volcano
; Mascarene Islands
; Piton de la Fournaise
; Reunion
英文摘要: Body wave reconstruction from ambient seismic noise correlations is an important step toward improving volcano imaging and monitoring. Here we extract body and surface waves that propagate in Piton de la Fournaise volcano on La Réunion island using ambient noise cross correlation and array-processing techniques. Ambient noise was continuously recorded at three dense arrays, each comprising 49 geophones. To identify and enhance the Green's function from the ambient noise correlation, we apply a double beamforming (DBF) technique between the array pairs. The DBF allows us to separate surface and body waves, direct and reflected waves, and multipathing waves. Based on their azimuths and slownesses, we successfully extract body waves between all the combinations of arrays, including the wave that propagates through the active magmatic system of the volcano. Additionally, we identify the effects of uneven noise source distribution and interpret the surface wave reflections. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959503787&doi=10.1002%2f2015GL066997&partnerID=40&md5=195a6caf731ab92223674dc98eb7a822
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10377
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: Stanford University, United States
Recommended Citation:
Nakata N.,Boué P.,Brenguier F.,et al. Body and surface wave reconstruction from seismic noise correlations between arrays at Piton de la Fournaise volcano[J]. Geophysical Research Letters,2016-01-01,43(3).