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Wapenaar, C.P.A. (author), Fokkema, J. (author), Snieder, R. (author)
We compare two approaches for deriving the fact that the Green’s function in an arbitrary inhomogeneous open system can be obtained by cross correlating recordings of the wave field at two positions. One approach is based on physical arguments, exploiting the principle of time-reversal invariance of the acoustic wave equation. The other approach...
journal article 2005