Time-lapse travel time change of multiply scattered acoustic waves

By C. Pacheco, Roel Snieder. 2005

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The Theory of Coda Wave Interferometry (2006, methodology): “The kernel K ( r , t ) has been derived both for single - scattered waves [ Pacheco and Snieder , 2005a ] as well as for strongly scattered waves [ Pacheco and Snieder , 2005b ] .”
Depth sensitivity of seismic coda waves to velocity perturbations in an elastic heterogeneous medium (2013, methodology): “The theoretical bulk contribution εBulk can be related to a local velocity perturbation using the sensitivity kernel introduced by Pacheco & Snieder (2005) K (S, R, r0, t) = ∫ t 0 p(S, r0, u)p(r0, R, t − u)du p(S, R, t) , (13) where S and R are the positions of the source and the receiver, r0 is…”
Sudden drop of seismic velocity after the 2004 Mw 6.6 mid-Niigata earthquake, Japan, observed with Passive Image Interferometry (2009, background): “raypath. This problem can, in principle, be solved using sensitivity kernels [ Pacheco and Snieder, 2005, 2006 ].”