Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/3019
AuthorsStabile, T. A.* 
De Matteis, R.* 
Zollo, A.* 
TitleDevelopment of a multi-phase dynamic ray-tracing code
Issue Date2007
Series/Report no.INGV- DPC/V4 PROJECT V4
URIhttp://hdl.handle.net/2122/3019
Keywordsseismic phases
Axitra code
Subject Classification04. Solid Earth::04.06. Seismology::04.06.10. Instruments and techniques 
AbstractWe here propose a method for rapid, high-frequency seismogram generation that makes use of an algorithm to automatically generate an exhau- stive set of seismic phases that produce an appreciable amplitude on the sei- smogram. The method uses a hierarchical order of rays and seismic phases generation, taking into account some existence constraints for a ray-path and some physical constraints. To compute synthetic seismograms, the COMRAD code (from the Italian: “COdice Multifase per il RAy-tracing Dinamico”) uses as its core a dynamic ray-tracing code. To validate the code, we have computed in a layered medium synthetic seismograms using both COMRAD and a code which computes the complete wavefield by the discrete wavenumber method. The seismograms are compared according to a time-frequency misfit criteria based on the continuous wavelet transform of the signals. The comparison shows that the ray-theory seismogram is enough complete and moreover, the time for the computing of the synthetics using the COMRAD code (truncating the ray series at the 10th generation) is 3-4-fold less than that needed for the Axitra code (to a frequency of 25 Hz).
Appears in Collections:Reports

Files in This Item:
File Description SizeFormat 
StaDem-2007.pdf566.5 kBAdobe PDFView/Open
Show full item record

Page view(s)

121
checked on Apr 27, 2017

Download(s)

130
checked on Apr 27, 2017

Google ScholarTM

Check