Fig. 4

Relationships between the relative velocity change dv/v and the rainfall classes for 15 seismic stations from KiK-net. The solid circular represents results from averaged deconvolution functions. The cross with error bar represents the mean value and the standard deviation of single measurements. The velocity does not change obviously when the rainfall class ranges from level II–V, while it is reduced by 1–10% when the rainfall class reaches level VI