摘要
第四纪地貌体的位错精确测量是活动断裂研究的基础,提高地形数据的分辨率是关键.激光雷达三维扫描(LiDAR)是一种快速获取高精度地形数据的先进有效方法.在我国一条标志性的大型活动断裂——海原断裂带上成功开展了机载激光雷达扫描,覆盖128km的区段,获取了高密度的激光点云数据和达0.5m分辨率的数字高程模型(DEM),实现了对海原断裂带的微地貌形态和断层几何的高清晰度三维再现.高密度大范围的三维激光扫描促进断裂活动性和古地震复发规律的精细化研究.
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.
出处
《科学通报》
EI
CAS
CSCD
北大核心
2013年第1期41-45,共5页
Chinese Science Bulletin
基金
国家自然科学基金重点项目(41030317)
中国地震局地质研究所中央级公益性科研院所基本科研业务专项(IGCEA1125)
中国地震局地震行业专项(201008003)资助
