On the Effect of Bathymetry on Microbaroms Signals
Session: Infrasound and the Seismo-Acoustic Wavefield II
Type: Oral
Date: 4/21/2021
Presentation Time: 09:45 AM Pacific
Description:
Ocean wave interactions generate both seismic and acoustic noise in the frequency band 0.1 -1 Hz respectively known as microseisms and microbaroms. Though the bathymetry is known as an essential feature for microseism modelling, its effect is less evident for microbaroms. In this study, we present a recent microbarom model in which the bathymetry effect depends on the vertical emission angle. The validation of this model using global infrasound observations from the International Monitoring System indicates that the bathymetry effect is weak for microbaroms detected at ground stations. It is expected that improved characterization of microbarom source model will enhance knowledge of the seismo-acoustic wavefield generated by coupling processes at the ocean-earth-atmosphere interface.
Presenting Author: Marine De Carlo
Student Presenter: No
Authors
Marine De Carlo Presenting Author Corresponding Author marine.decarlo@gmail.com CEA, DAM, DIF |
Alexis Le Pichon alexis.le-pichon@cea.fr CEA, DAM, DIM |
Fabrice Ardhuin ardhuin@ifremer.fr LOPS / CNRS |
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On the Effect of Bathymetry on Microbaroms Signals
Category
Infrasound and the Seismo-acoustic Wavefield