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dc.contributor.author
 hal.structure.identifier
JAMET, Guillaume
143309 Domaines Océaniques [LDO]
dc.contributor.author
 hal.structure.identifier
GUENNOU, Claude
143309 Domaines Océaniques [LDO]
dc.contributor.author
 hal.structure.identifier
GUILLON, Laurent
13094 Institut de Recherche de l'Ecole Navale [IRENAV]
dc.contributor.author
 hal.structure.identifier
MAZOYER, Camille
108091 Université européenne de Bretagne - European University of Brittany [UEB]
dc.contributor.author
 hal.structure.identifier
ROYER, Jean-Yves
143309 Domaines Océaniques [LDO]
dc.date.accessioned2014
dc.date.available2014
dc.date.issued2013
dc.date.submitted2014
dc.identifier.issn0001-4966
dc.identifier.urihttp://hdl.handle.net/10985/8711
dc.description.abstractT-waves are underwater acoustic waves generated by earthquakes. Modeling of their generation and propagation is a challenging problem. Using a spectral element code—SPECFEM2D, this paper presents the first realistic simulations of T-waves taking into account major aspects of this phenomenon: The radiation pattern of the source, the propagation of seismic waves in the crust, the seismic to acoustic conversion on a non-planar seafloor, and the propagation of acoustic waves in the water column. The simulated signals are compared with data from the mid-Atlantic Ridge recorded by an array of hydrophones. The crust/water interface is defined by the seafloor bathymetry. Different combinations of water sound-speed profiles and sub-seafloor seismic velocities, and frequency content of the source are tested. The relative amplitudes, main arrival-times, and durations of simulated T-phases are in good agreement with the observed data; differences in the spectrograms and early arrivals are likely due to too simplistic source signals and environmental model. These examples demonstrate the abilities of the SPECFEM2D code for modeling earthquake generated T-waves
dc.language.isoen
dc.publisherAcoustical Society of America
dc.rightsPost-print
dc.titleT-wave generation and propagation: A comparison between data and spectral element modeling
ensam.hal.submitrunning
dc.identifier.doi10.1121/1.4818902
dc.typdocArticle dans une revue avec comité de lecture
dc.localisationCentre de Paris
dc.subject.halSciences de l'ingénieur: Acoustique
ensam.audienceInternationale
ensam.page3376-3385
ensam.journalJournal of the Acoustical Society of America
ensam.volume134
ensam.issue4
hal.submission.permittedtrue
hal.statusunsent
dc.identifier.eissn1520-8524


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