Anomalous Attenuation of High‐Frequency Seismic Waves in Taiwan: Observation, Model and Interpretation
Résumé
High resolution maps of seismic attenuation parameters in Taiwan have been obtained from a modified “Multiple Lapse Time Window Analysis” (MLTWA). At most of the stations in porous sedimentary and highly faulted areas in Taiwan, the conventional modeling of MLTWA based on the scalar theory of radiative transfer in a half-space with isotropic scattering fails to explain the spatio-temporal distribution of the whole S-wave train. Using Monte Carlo simulations of wave transport, we demonstrate that this anomalous energy distribution in the coda may be modeled by multiple anisotropic scattering of seismic waves. In addition to the scattering quality factor
Domaines
Géophysique [physics.geo-ph]
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JGR Solid Earth - 2023 - Calvet - Anomalous Attenuation of High‐Frequency Seismic Waves in Taiwan Observation Model and.pdf (3.16 Mo)
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Origine : Publication financée par une institution
Licence : CC BY - Paternité
Licence : CC BY - Paternité