Figure 4
From: Post-seismic ionospheric response to the 11 April 2012 East Indian Ocean doublet earthquake
Differential TEC variations from 08:00 to 10:00 UTC as observed by PRN 32 and PRN 16. (a) Differential TEC variations from PRN 32 from SuGAr and IGS stations as observed between 08:00 and 10:00 UTC on 11 April 2012. (b) Same as (a) but from PRN 16. The north and south directions from the epicenter are shown in the figure. The distance of the respective station from the epicenter is also depicted. It is interesting to note that the TEC fluctuations propagated as far as pbri (location can be seen in Figure 3a) in the north but propagated only a few hundred kilometers in the south. Similar behavior was exhibited by PRN 16 TEC fluctuations. (Epicenter location shown by star is approximate, and not to scale).