The earthquake data are constrained by Global
Positioning System (GPS) measurements at a
Phuket site (Vigny et al., 2005). As the 26
December 2004 Earthquake caused a major
movement of the Phuket site to the West, an
increase in the earthquake activities in Southern
Thailand could be also observed. However, the 28
March 2005 Earthquake did not cause any major
movement of the Phuket site, and consequently
there was not a significant increase of the
earthquake activities in Southern Thailand