[SSS09-P04] Post-seismic deformation of 2016 Kumamoto Earthquake by continuous GNSS network (2)
Keywords:Continuous GNSS observation, post-seismic deformation, 2016 Kumamoto Earthquake
Plate motion in each site should be removed from post-seismic deformation data. Displacement velocities of GNSS sites are estimated by Least Squares method in the period from 2004 to 2013. Displacement velocities of extraordinary GNSS sites are interpolated by velocities around the sites. Post-seismic deformation is derived by extracting the displacement velocity of plate motion.
Post-seismic deformation is observed at sites which are located on the south-east side of Hinagu fault, especially on NS component until December 2017. It seems that clear post-seismic deformation continues until early part of June, 2016 at sites which are located on the north-west side of Hinagu faults. Change in NS component around May, 2017 and in EW component around August, 2017 occurred at sites which are located on both sides of Hinagu fault.