Calculation of coseismic displacement from lidar data in the 2016 Kumamoto, Japan, earthquake

Moya, Luis; Yamazaki, Fumio; Liu, Wen; Chiba, Tatsuro

doi:https://doi.org/10.5194/nhess-17-143-2017

Articles | Volume 17, issue 1

https://doi.org/10.5194/nhess-17-143-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/nhess-17-143-2017

© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 17, issue 1

Research article

|

01 Feb 2017

Research article |

| 01 Feb 2017

Calculation of coseismic displacement from lidar data in the 2016 Kumamoto, Japan, earthquake

Luis Moya, Fumio Yamazaki, Wen Liu, and Tatsuro Chiba

Data sets

Strong-motion seismograph networks (K-NET, KiK-net) National Research Institute for Earth Science and Disaster Resilience http://www.kyoshin.bosai.go.jp/

Waveform data obtained by seismometers of local goverments Japan Meteorological Agency http://www.data.jma.go.jp/svd/eqev/data/kyoshin/jishin/1604160125_kumamoto/index2.html

Ground motion records at temporary stations in Mashiki town during the 2016 Kumamoto earthquake Y. Hata, H. Goto, and M. Yoshimi http://wwwcatfish.dpri.kyoto-u.ac.jp/~kumaq

Geospatial data abstraction library GDAL http://www.gdal.org/index.html

Open source computer vision OpenCV http://opencv.org/

Numpy Scipy http://www.numpy.org/#

Short summary

This paper calculates the coseismic displacement produced during the 16 April 2016 M_w 7.0 Kumamoto earthquake from a pair of digital surface models (DSMs), acquired before and after the earthquake from airborne lidar data. A window matching search approach based on the correlation coefficient was used for this purpose. Results are consistent with the coseismic displacement estimated from strong-motion acceleration records and with the surveyed surface rupture.