Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006geoji.167...70r&link_type=abstract
Geophysical Journal International, Volume 167, Issue 2, pp. 70-76.
Astronomy and Astrophysics
Astronomy
Finite-Difference Methods, Numerical Techniques, Rough Surface, Seismic Modelling, Seismic Wave Propagation, Synthetic Seismograms
Scientific paper
We compare three numerical methods to model the sea surface interaction in a marine seismic reflection experiment (the frequencies considered are in the band 10-100 Hz): the finite-difference method (FDM), the spectral element method (SEM) and the Kirchhoff method (KM). A plane wave is incident at angles of 0° and 30° with respect to the vertical on a rough Pierson-Moskowitz surface with 2 m significant wave height and the response is synthesized at 6, 10 and 50 m below the average height of the sea surface. All three methods display an excellent agreement for the main reflected arrival. The FDM and SEM also agree very well all through the scattered coda. The KM shows some discrepancies, particularly in terms of amplitudes.
Chapman Chris
Delavaud Elise
Laws Robert
Robertsson Johan O. A.
Vilotte Jean-Pierre
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