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Seismic Interferometry – Reconstruction of the Elastodynamic Reflection Response

In [1] it was shown that for 1-D acoustic media the reflection response can be synthesized by taking the autocorrelation of the transmission response measured at the free surface. This method was coined ”Acoustic Daylight Imaging”. In [2] this was mathematically generalized for a 3-D inhomogeneous medium, both acoustic and elastic. In this paper, the relation between the reflection and the transmission responses were derived making use of an one-way reciprocity theorem of the correlation type. Numerical acoustical modelling confirmed these relations for the acoustical situation and we investigated the quality of the synthesized reflection response depending on the source distribution and time duration ([3], [4]).