Fig. 2From: Advective diffusion of volcanic plume captured by dense GNSS network around Sakurajima volcano: a case study of the vulcanian eruption on July 24, 2012Standard deviations of post-fit phase residuals (PPR) at each ground station, and their average (left side of plot), and standard deviation of PPR for each satellite (right side of plot), on July 23, 2012, the previous day of the eruption. Note that on that day, no significant volcanic activity occurredBack to article page