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Progress in Earth and Planetary Science
Fig. 11 | Progress in Earth and Planetary Science

Fig. 11

From: Estimation of seismic velocity changes at different depths associated with the 2014 Northern Nagano Prefecture earthquake, Japan (M W 6.2) by joint interferometric analysis of NIED Hi-net and KiK-net records

Fig. 11

Schematic illustration that describes the separation of the whole medium into regions A and B. The curves P i represent paths along which seismic waves propagate, where i indicates the path number. ∫ P,A ds and ∫ P,B ds are integrals along path P that pass through regions A and B, respectively

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