Physics
Scientific paper
Jul 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pepi...84..247p&link_type=abstract
Physics of the Earth and Planetary Interiors, Volume 84, Issue 1-4, p. 247-270.
Physics
2
Scientific paper
New broadband seismographs enable us to analyse in more detail mantle waves perturbed by the complexity of the medium around the source. We propose to apply ray tracing for complex media around the source and more efficient ray tracing for a spherically symmetric Earth through the mantle up to the stations. We show on synthetic examples that the complexity around the source may indeed modify considerably the seismograms. We analyse theoretical teleseismic waveforms and relate modulation of the amplitude to the medium's structure around the source. For the example of the Romanian earthquake of 30 May 1990, we analyse three seismograms which were not modelled correctly with a spherically symmetric Earth model. By adding some near-surface interfaces, we were able to improve the fit between observed and computed seismograms. The deduced hypothetical model, which may not be the only possible model, is in agreement with proposed published models in the area.
Deschamps Anne
Farra Véronique
Perrot Julie
Virieux Jean
No associations
LandOfFree
Azimuthal distortion of the seismic focal sphere: application to earthquakes in subduction does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Azimuthal distortion of the seismic focal sphere: application to earthquakes in subduction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Azimuthal distortion of the seismic focal sphere: application to earthquakes in subduction will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-823572