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May 31, 2026Journal of Japan Association for Earthquake Engineering0 citationsOpen Access

Extraction of Crustal Deformation in Minami-Aso Village Based on Airborne LiDAR Data before and after the 2016 Kumamoto Earthquake and Its Accuracy Verification

FYFumio YAMAZAKIWLWen LIU

Key Points

  • The study aims to estimate crustal deformation in Minami-Aso Village during two periods surrounding the 2016 Kumamoto Earthquake.
  • Used airborne LiDAR data from before and after the 2016 Kumamoto Earthquake.
  • Calculated 3D displacement using the ICP method for spatial correlation of original and ground point cloud data.
  • Estimated deformation based on terrain differencing method.
  • Compared estimated displacement from ground data with survey points, yielding similar values.
  • Local ground deformation such as landslides and ground cracks impacted results depending on window size.

Abstract

本研究では，2016年熊本地震の前後の2時期に観測された航空レーザ計測データを用いて，南阿蘇村の立野・河陽地区における地殻変動量を3次元地形差分法に基づいて推定した．国土地理院が観測したオリジナルおよびグラウンドの点群データのicp法による空間相関から，3次元変位量を計算した．結果は斜面崩壊や地割れなどのローカルな地盤変状や建物倒壊などの影響を受け，計算ウィンドウの大きさにも依存するが，グラウンドデータからの推定結果は，測量基準点における観測変位量と比べて近似した値が求まった．

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Cite This Study

YAMAZAKI et al. (2026) studied this question.

synapsesocial.com/papers/6a1bd0155783ba022b6fbf99https://doi.org/10.5610/jaee.26.2_173
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