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Volume 17, issue 1 | Copyright
Nat. Hazards Earth Syst. Sci., 17, 143-156, 2017
https://doi.org/10.5194/nhess-17-143-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 01 Feb 2017

Research article | 01 Feb 2017

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

Luis Moya1, Fumio Yamazaki1, Wen Liu1, and Tatsuro Chiba2 Luis Moya et al.
  • 1Department of Urban Environment Systems, Chiba University, Chiba 263-8522, Japan
  • 2Research and Development Institute, Asian Air Survey Co., Ltd., Kawasaki 215-0044, Japan

Abstract. The spatial distribution of the coseismic displacements that occurred along the Futagawa fault during the 2016 Kumamoto earthquake of Mw 7.0 was estimated using airborne light detection and ranging (lidar) data. In this study, a pair of digital surface models (DSMs) obtained from the high-density lidar data before and after the mainshock on 16 April 2016 were used. A window matching search approach based on the correlation coefficient between the two DSMs was used to estimate the geodetic displacement in the near-field region. The results showed good agreements with the geodetic displacements calculated from strong-motion acceleration records and coincided with the fault line surveyed by the Geological Survey of Japan.

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This paper calculates the coseismic displacement produced during the 16 April 2016 Mw 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.
This paper calculates the coseismic displacement produced during the 16 April 2016 Mw 7.0...
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