摘要
提出了一种地形形态特征约束的同震滑坡隐患自动提取方法,首先分析同震滑坡隐患在精细数字高程模型(digital elevation model,DEM)上的形态特征,然后建立同震滑坡隐患地形表征的定量描述方法,最后以形态学约束实现滑坡隐患区的自动圈定。以九寨沟典型同震滑坡进行方法试验,试验结果验证了所提方法的有效性。
This paper proposes an automatic extraction method of co-seismic landslide hidden dangers based on the constraint of topographical morphological features.Firstly,we analyze the morphological features of co-seismic landslides hidden danger in the fine DEM,then establish the quantitative description method of landslides hidden danger terrain feature,Finally,the landslide hidden danger areas are automatic extracted based on the morphological constraints.The test results in the typical co-seismic landslide in Jiuzhaigou verify the effectiveness of the method.
作者
孙昆襄
丁雨淋
曾浩炜
谢潇
朱庆
SUN Kunxiang;DING Yulin;ZENG Haowei;XIE Xiao;ZHU Qing(Faculty of Geosciences and Environmental Engineering,Southwest Jiaotong University,Chengdu 611756,China;Zhejiang Hi-Target Spatial Information Technology Co.,Ltd.,Huzhou 313299,China;Sichuan Smart Map Spatial Information Technology Co.,Ltd.,Chengdu 610036,China)
出处
《测绘地理信息》
CSCD
2022年第4期82-86,共5页
Journal of Geomatics
基金
国家重点研发计划(2018YFB0505404)
关键词
数字高程模型
地形形态约束
同震滑坡隐患
机载激光雷达
滑坡隐患自动提取
DEM
terrain morphology constraint
co-seismic landslide hidden danger
LiDAR
automatic extraction of landslide hidden dangers
作者简介
第一作者:孙昆襄,硕士,主要从事虚拟地理环境与智慧城市、滑坡灾害研究。E-mail:etipf_skx@my.swjtu.edu.cn
