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- W2028005832 abstract "The extrapolation of an observed (seismogram) wavefield backward in time produces an image, in both time and space, of the source. This concept is implemented through a finite difference solution of the two-dimensional acoustic wave equation. The seismograms themselves are used as time-dependent boundary values that drive the finite difference mesh, Numerical examples illustrate the determination of hypocentre location and origin time for point sources and of source extent, orientation and rupture velocity for finite sources in both homogeneous and heterogeneous media. Spatial resolution of source parameters is typically one-half wavelength of the dominant frequency generated by the source." @default.
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- W2028005832 date "1982-12-01" @default.
- W2028005832 modified "2023-10-02" @default.
- W2028005832 title "Determination of source parameters by wavefield extrapolation" @default.
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- W2028005832 doi "https://doi.org/10.1111/j.1365-246x.1982.tb02788.x" @default.
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