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

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.