Fig. 6From: 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 recordsExample of a a cross-section and 1D profile of the reference velocity structure used in the FDM wave propagation simulation, and b a magnified image of the area surrounded by the rectangle in Fig. 6a. The source and receiver are set at 150 m depth, as shown by the triangle. Colored 1D velocity profiles represent increased (blue) and decreased (red) reference velocity structures, which are used to constrain the range of sensitivities α due to uncertainty in the background velocity modelBack to article page