Theory of acoustic daylight imaging revisited Kees Wapenaar Deyan Draganov Jan Thorbecke Jacob Fokkema Centre for Technical Geoscience Delft University of Technology

Claerbout, 1968 :

Reflection response Transmission response

Claerbout’s conjecture: ‘‘By crosscorrelating noise traces recorded at two locations on the surface, we can construct the wave field that would be recorded at one of the locations if there was a source at the other’’

Reciprocity for one-way wave fields

Acoustic daylight imaging 1-Dimensional : 3-Dimensional :

Syncline model

Reflection response Transmission response

Syncline model

Transmission response (fixed , variable )

(variable )

Syncline model

(variable )

Causal part of

Directly modeled reflection response

Claerbout’s conjecture

Claerbout’s conjecture Assume uncorrelated noise sources:

Claerbout’s conjecture

Seismic interferometry (Schuster) + ‘ other stuff ’

Seismic interferometry (Schuster)

Summary Acoustic daylight imaging

Summary Acoustic daylight imaging (uncorrelated sources) Interferometric imaging