DOI: 10.1002/2014GL062319
论文题名: Tracking major storms from microseismic and hydroacoustic observations on the seafloor
作者: Davy C. ; Barruol G. ; Fontaine F.R. ; Sigloch K. ; Stutzmann E.
刊名: Geophysical Research Letters
ISSN: 0094-9496
EISSN: 1944-9227
出版年: 2014
卷: 41, 期: 24 起始页码: 8825
结束页码: 8831
语种: 英语
英文关键词: hydroacoustic
; Indian Ocean
; major storms
; microseismic noise
; ocean bottom seismometers (OBS)
; Rayleigh waves
Scopus关键词: Frequency bands
; Oceanography
; Rayleigh waves
; Seismographs
; Seismology
; Storms
; Surface waves
; Hydroacoustic
; Indian ocean
; Microseismic noise
; Ocean bottom seismometer
; Polarization analysis
; Real time tracking
; Satellite observations
; Wave interactions
; Water waves
; cyclone
; hydrophone
; observational method
; polarization
; seafloor
; seismic noise
; seismic wave
; seismograph
; solid Earth
; spectral analysis
; storm
; surface wave
; tracking
; Indian Ocean
英文摘要: Ocean wave activity excites seismic waves that propagate through the solid earth, known as microseismic noise. Here we use a network of 57 ocean bottom seismometers (OBS) deployed around La Réunion Island in the southwest Indian Ocean to investigate the noise generated in the secondary microseismic band as a tropical cyclone moved over the network. Spectral and polarization analyses show that microseisms strongly increase in the 0.1-0.35 Hz frequency band as the cyclone approaches and that this noise is composed of both compressional and surface waves, confirming theoretical predictions. We infer the location of maximum noise amplitude in space and time and show that it roughly coincides with the location of maximum ocean wave interactions. Although this analysis was retrospectively performed, microseisms recorded on the seafloor can be considered a novel source of information for future real-time tracking and monitoring of major storms, complementing atmospheric, oceanographic, and satellite observations. Key Points Observations of microseisms on the ocean bottom induced by a passing cycloneSecondary microseisms beneath the storm composed of body and Rayleigh wavesTrackability of major storms using ocean bottom seismometers and hydrophones ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921842984&doi=10.1002%2f2014GL062319&partnerID=40&md5=a02af70faab0909fc8b2ce07206d1ed7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6760
Appears in Collections: 气候减缓与适应
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作者单位: Laboratoire GéoSciences Réunion, Université de la Réunion, Université Paris Diderot, Saint Denis cedex 9, France
Recommended Citation:
Davy C.,Barruol G.,Fontaine F.R.,et al. Tracking major storms from microseismic and hydroacoustic observations on the seafloor[J]. Geophysical Research Letters,2014-01-01,41(24).