摘要
北京市地质灾害发育明显,区内地质构造、地层岩性复杂、降水分布不均,且周边山区人类工程活动非常强烈,存在有大量的突发性地质灾害,极大威胁周边地区人们的生命财产安全.在充分研究遥感变化检测理论的基础上,以多源、多时相国产卫星高空间分辨率遥感数据为数据源,采用遥感技术并结合地理信息系统等其他方法手段,探索出主成分比值法变化检测方法是较适合提取研究区灾害体变化信息的有效方法.通过变化量估算和趋势分析,确定地质灾害体变化量频率及强度,以此预测其危险程度,并提出防治措施及建议.
Because of its complicated tectonics and lithology as well as uneven distribution of the precipitation, Beijing region has developed many geological hazards. Also, there are a number of human engineering activities in the mountain area of Beijing, which will lead to sudden hazards. These sudden hazards are threatening the people and their property safety. Based on remote sensing change detection theory, the authors used the multi-source, multi-temporal domestic satellite data with high resolution to analyze the hazards in Beijing. The authors utilized the remote sensing technology in combination with other methods and means of geographic information systems to analyze the hazards. Among the methods, the authors found that the principal component ratio method is the best. The authors also established the elevation models and the time changing trends model to forecast the degree of danger of geological hazard body in the study area.
出处
《国土资源遥感》
CSCD
北大核心
2017年第B10期27-33,共7页
Remote Sensing for Land & Resources
基金
中国地质调查局地质调查项目“全国自然资源遥感综合调查与信息系统建设”（编号：121201203000160011）资助.
关键词
地质灾害体
变化检测
变化量估算
geological hazard body
change detection
estimation of variable quantity
