2025 Volume 25 Issue 4 Pages 4_265-4_274
We propose a systematic fault displacement evaluation method using remote sensing techniques and discuss its present issues and prospects. By calculating relative displacements on measurement lines across a fault trace with a certain interval to the high-resolution 3-D surface movement data acquired using differential InSAR and LiDAR, the method supplies us with displacements, slip senses, and dip angles of the fault. Applying it to many secondary faults widely observed during the 2016 Kumamoto Earthquake, we elucidate that the displacements decrease according to the distance from the primary fault.
