5:15 PM - 6:30 PM
[MIS34-P38] Estimation of co-seismic surface displacement and ground deformation associated with the April 2016 Kumamoto Earthquake, based on differential InSAR by Sentinel-1 and differential LiDAR DEM analysis.
Keywords:the 2016 Kumamoto Earthquake, InSAR, Differential DEM Analysis, LiDAR, Image matching analysis
We used 1 m mesh DEM (Digital Elevation Model) data measured in 2009 (pre-event), 2014 (5 days later from the event), 2015 (about 1 year later from the event), and applied the particle image velocity method to obtain 3-D vectors of coseismic deformation (Mukoyama, 2011). The precision of this method is 0.1 m.
Results show a wide area distribution of ground deformation clealy. Additionally, the result of differential coherence analysis shows distribution of damaged houses and constructions.