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Earth, Planets and Space
Fig. 3 | Earth, Planets and Space

Fig. 3

From: Advective diffusion of volcanic plume captured by dense GNSS network around Sakurajima volcano: a case study of the vulcanian eruption on July 24, 2012

Fig. 3

Obtained post-fit phase residual (PPR) anomalies. a Sky plot of PPR anomalies for station SBTG for the period from 1 h before and 1 h after the onset of the eruption on July 24, 2012 at the Minamidake crater. Blue and red colors denote negative and positive PPR anomalies, respectively. Positive PPR values might reflect the phase delay in the slant path between the station and the satellite. b Time series of PPR anomalies for the station SBTG relative to satellite SVN53 for the period from 0.2 h before to 1 h after the onset of the eruptive event. Solid and dashed lines denote the day of the eruptive event (DOY 206) and 1 day before the eruptive event (DOY 205) at the Minamidake crater, respectively. The horizontal axis represents the lapsed time from the eruption onset. The corresponding trace of SVN53 is represented in a. Dashed blue lines denote the estimated wet zenith tropospheric delay (WZTD) time series; c and d denote the sky plot of the PPR anomalies for KSHL and the time series of PPR anomalies and WZTD values for station KSHL relative to SVN34, respectively

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