机载激光雷达扫描揭示海原断裂带微地貌的精细结构
摘要
Accurately measuring landform offset is a core component in active fault studies, the resolution of topographic description of landform thus plays a critical role. Airborne Light Detection and Ranging (LiDAR) is a new and powerful tool for efficient acquisition of topographic data with cm- to mm- resolution. We recently acquired approximately 128 kilometers of airborne LiDAR topographic data along the Haiyuan fault, producing 0.5 meter DEMs of the ground surface. The newly obtained LiDAR data reveal fault traces with unprecedented clarity. Airbone LiDAR data, carrying features such as high density, large areal coverage and true 3D, provide an extraordinary opportunity to advance our understanding of active faults and their earthquake recurrence behavior.