Open Access3‐D acoustic modelling and imaging for earthquake data
Author(s) -
McMechan George A.,
Wen Jing,
Morales Jorge A.
Publication year - 1988
Publication title -
geophysical journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0952-4592
DOI - 10.1111/j.1365-246x.1988.tb01145.x
Subject(s) - seismogram , acoustic wave equation , fourier transform , wave equation , geology , acoustics , energy (signal processing) , seismology , acoustic wave , computer science , mathematical analysis , physics , mathematics , quantum mechanics
SUMMARY Through the use of a very fast, 3‐D Fourier transform, the 3‐D acoustic wave equation can be efficiently solved for earthquake modelling and imaging. An array of 512 2 seismograms can be modelled or imaged in under 2 1/2 minutes. The main disadvantages are that the rms velocity above the source must be constant and that the source rupture velocity must be infinite. The main advantages are that the solution does not involve any approximations to the acoustic wave equation, and that arbitrary (spatial) source energy distributions are easily handled. The computational costs are independent of source complexity.