T-wave generation and propagation: a comparison between data and spectral element modeling.
hal.structure.identifier | Domaines Océaniques [LDO] | |
dc.contributor.author | JAMET, Guillaume | |
hal.structure.identifier | Domaines Océaniques [LDO] | |
dc.contributor.author | GUENNOU, Claude | |
hal.structure.identifier | Institut de Recherche de l'Ecole Navale [IRENAV] | |
dc.contributor.author | GUILLON, Laurent | |
hal.structure.identifier | Université européenne de Bretagne - European University of Brittany [UEB] | |
hal.structure.identifier | Université de Brest [UBO] | |
dc.contributor.author | MAZOYER, Camille | |
hal.structure.identifier | Domaines Océaniques [LDO] | |
dc.contributor.author | ROYER, Jean-Yves | |
dc.date.accessioned | 2021-05-14T10:02:39Z | |
dc.date.available | 2021-05-14T10:02:39Z | |
dc.date.issued | 2013-10 | |
dc.identifier.issn | 0001-4966 | |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/78340 | |
dc.description.abstractEn | T-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.iso | en | |
dc.publisher | Acoustical Society of America | |
dc.title.en | T-wave generation and propagation: a comparison between data and spectral element modeling. | |
dc.type | Article de revue | |
dc.identifier.doi | 10.1121/1.4818902 | |
dc.subject.hal | Physique [physics]/Mécanique [physics]/Acoustique [physics.class-ph] | |
dc.subject.hal | Sciences de l'ingénieur [physics]/Acoustique [physics.class-ph] | |
dc.subject.hal | Planète et Univers [physics]/Sciences de la Terre | |
bordeaux.journal | Journal of the Acoustical Society of America | |
bordeaux.page | 3376-85 | |
bordeaux.volume | 134 | |
bordeaux.hal.laboratories | Institut de Mécanique et d’Ingénierie de Bordeaux (I2M) - UMR 5295 | * |
bordeaux.issue | 4 | |
bordeaux.institution | Université de Bordeaux | |
bordeaux.institution | Bordeaux INP | |
bordeaux.institution | CNRS | |
bordeaux.institution | INRAE | |
bordeaux.institution | Arts et Métiers | |
bordeaux.peerReviewed | oui | |
hal.identifier | insu-00915042 | |
hal.version | 1 | |
hal.origin.link | https://hal.archives-ouvertes.fr//insu-00915042v1 | |
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