Quantitative study of tectonic geomorphology along Haiyuan fault based on airborne LiDAR

作     者：Tao Chen Pei Zhen Zhang Jing Liu Chuan You Li Zhi Kun Ren Kenneth W. Hudnut 

作者机构：State Key Laboratory of Earthquake Dynamics Institute of Geology China Earthquake Administration National Earthquake Infrastructure Service United States Geological Survey 

出 版 物：《Chinese Science Bulletin》 (Chinese Science Bulletin)

年 卷 期：2014年第59卷第20期

页      面：2396-2409页

核心收录：

学科分类：070801[理学-固体地球物理学] 07[理学] 0708[理学-地球物理学] 

基　　金：funded by the Fundamental Research Funds in the Institute of Geology(IGCEA1125) the Public Service Funds for Earthquake Studies(201308012) the National Natural Science Fund for Distinguished Young Scholars(41225010) the Foundation of Returned Overseas Scholars of China 

主　　题：构造地貌 海原断裂 机载激光雷达 LiDAR 数字高程模型 计算机工作站 活动断层 地貌特征 

摘      要：High-precision and high-resolution topography are the fundamental data for active fault *** detection and ranging(LiDAR)presents a new approach to build detailed digital elevation models *** take the Haiyuan fault in Gansu Province as an example of how LiDAR data may be used to improve the study of active faults and the risk assessment of related *** the eastern segment of the Haiyuan fault,the Shaomayin site has been comprehensively investigated in previous research because of its exemplary tectonic topographic *** on unprecedented LiDAR data,the horizontal and vertical coseismic offsets at the Shaomayin site are *** measured horizontal value is about 8.6 m,and the vertical value is about 0.8 *** prior dating ages sampled from the same location,we estimate the horizontal slip rate as4.0±1.0 mm/a with high confidence and define that the lower bound of the vertical slip rate is 0.4±0.1 mm/a since the *** data can repeat the measurements of field work on quantifying offsets of tectonic landform features quite *** offset landforms are visualized on an office computer workstation easily,and specialized software may be used to obtain displacement *** combining precious chronological results,the fundamentallink between fault activity and large earthquakes is better recognized,as well as the potential risk for future earthquake hazards.