摘要
基于综合校正后的2002—2016年间9景高分辨率影像、加密的ASTER GDEM高程数据产品和1∶20万洛阳市幅区域地质图,采用数字滑坡技术解译了洛阳市东苗家滑坡地形地貌,分析了滑坡形成条件和活动特征,并推测了滑坡稳定性现状。结果显示,东苗家滑坡过程可以分为首次滑坡活动、随后牵引活动、前部滑坡活动和后续滑坡活动4个阶段;形成7个平台和前部陡坡的四级台地地形;东苗家滑坡的总方量约为425.4万m 3;整体和各局部无明显变形位移现象,状态稳定。
Based on the digital landslide technology,the authors employed revised 10 high-resolution remote sensing images between 2002 and 2016 as remote sensing image information source,densified ASTER DEM data as landslide elevation information source,and 1∶200000 Luoyang City regional geological maps as the geological environment source and,in combination with Dongmiaojia landslide,analyzed the creation conditions and active characteristics of the landslide,and predicted the present stability situation of landslide.The result shows that the active process of Dongmiaojia landslide can be divided into four stages,i.e.,the first landslide activity,the subsequent traction activity,the front landslide activity and the follow-uPactivity,which formed topography of four level terraces with seven platforms and the front steePslope.The estimation of the total size of the Dongmiaojia landslide is 425.4×104 m 3.The comparison of ten high-resolution images indicates that there has been no obvious deformation and displacement in the Dongmiaojia landslide in recent years.
作者
贾伟洁
王治华
JIA Weijie;WANG Zhihua(Institute of Geographic Sciences and Natural Resources Research,China Academy of Sciences,Beijing 100101,China;China Aero Geophysical Survey and Remote Sensing Center for Natural Resources,Beijing 100083,China)
出处
《国土资源遥感》
CSCD
北大核心
2019年第4期174-181,共8页
Remote Sensing for Land & Resources
基金
高分辨率对地观测系统重大专项(编号:GFZX0404130302)
国家重点研发计划项目“基于国产遥感卫星的典型要素提取技术”(编号:2016YFB0501404)共同资助
关键词
东苗家滑坡
数字滑坡技术
解译基础
活动特征
四级台地
Dongmiaojia landslide
digital landslide technology
interpretation basis
activity characteristics
four level terraces
