摘要
2018年9月6日,日本北海道地区发生Mw 6.6级地震,地震触发了大量滑坡。基于福卫5卫星影像,在Google Earth平台上采用人工目视进行滑坡解译,把解译的滑坡导入ArcGIS,根据DEM和地质图在ArcGIS上选择高程、坡度、坡向、地震烈度、地层、震中距6个影响因子进行统计分析。研究结果表明:在187 km 2的范围内,解译滑坡4196个,滑坡总面积15.98 km^2,LND为22.44个/km^2,LAP为0.086;滑坡在高程130~180 m、坡度10°~20°、坡向120°~180°、地震烈度7度~7.5度、地层N 2sn、震中距10~12 km内分布数量最多,面积最大。
On September 6,2018,a Mw 6.6 earthquake occurred in Hokkaido,Japan,triggering a large number of landslides.Based on Planet 5 satellite images,the interpretation of landslides is carried out by artificial vision on the Google Earth platform.Then the interpreted landslides are imported into ArcGIS,six influencing factors include elevation,slope angle,slope direction,seismic intensity,lithology and epicenter distance according to DEM and geologic map are selected on ArcGIS platform for statistical analysis.The results are:(i)During the study area of 187 km 2,4196 landslides are interpreted,with a total landslide area of 15.98 km^2,LND of 22.44/km^2 and LAP of 0.086;(ii)The landslides have maximum number and area in the elevation of 130~180 m,slope angle 10°~20°,slope direction of 120°~180°,seismic intensity of 7°~7.5°,stratum of N2sn and epicenter distance of 10~12 km.Slope and elevation have a strong control effect on the development of seismic landslides.
作者
鲍鹏鹏
崔玉龙
许冲
傅贵
胡俊宏
陈孝柱
BAO Peng-peng;CUI Yu-long;XU Chong;FU Gui;HU Jun-hong;CHEN Xiao-zhu(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China;Institute of Crustal Dynamics,China Earthquake Administration,Beijing 100085,China;Key Laboratory of Active Tectonics and Volcano,Geology Institute of China Earthquake Administration,Beijing 100029,China)
出处
《河南城建学院学报》
CAS
2020年第2期33-40,共8页
Journal of Henan University of Urban Construction
基金
国家自然科学基金(41807267,41661144037)
安徽高校自然科学研究重点项目(KJ2018A0075)。
