汶川震后地质灾害遥感信息提取及分布特征分析
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摘要
以汶川县为研究区,利用遥感、GIS和计算机三维可视化技术,对地质灾害进行了信息提取和解译,共解译滑坡53个,崩塌1 575个,地质灾害面积76.58 km2,并建立了相应的数据库。利用GIS空间分析功能,结合高程、坡度、坡向、地层岩性、地震烈度和水系等因子对研究区地质灾害的空间分布特征进行了分析,并采用层次分析法对研究区地质灾害易发性预测进行了分区研究。研究结果表明,本数据与分析对安置地的重建和地震灾害预测具有很好的参考价值。
Taking to the Wenchuan county as the study area,using RS,GIS and 3D visualization technology,this paper described and discussed the extraction and interpretation of 414.25 km2 in the scope of this area.Wenchuan county has 53 landslides,1 575 collapses,the area of disasters is 76.58 km2.This paper used the spatial analysis function of GIS,combined with the spatial distribution of geological hazards elevation,slope,aspect,formation lithology,seismic intensity,water and other factors to analysis the spatial distribution of geological hazards.It also used layered approach for the susceptibility and prediction regional studies.The results show that data and analysis can benefit for the aftercare and earthquake prediction.
Taking to the Wenchuan county as the study area,using RS,GIS and 3D visualization technology,this paper described and discussed the extraction and interpretation of 414.25 km2 in the scope of this area.Wenchuan county has 53 landslides,1 575 collapses,the area of disasters is 76.58 km2.This paper used the spatial analysis function of GIS,combined with the spatial distribution of geological hazards elevation,slope,aspect,formation lithology,seismic intensity,water and other factors to analysis the spatial distribution of geological hazards.It also used layered approach for the susceptibility and prediction regional studies.The results show that data and analysis can benefit for the aftercare and earthquake prediction.
引文
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[3]杨武年,廖崇高,濮国粱,等.数字区调新技术新方法———遥感图像地质解译三维可视化及影像动态分析[J].地质通报,2003,22(1):60-64.
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[7]SATO H P,HARP E L.Interpretation of earthquake-induced land-slides triggered by the 12 May 2008,M7.9 Wenchuan earthquake inthe Beichuan area,Sichuan province,China using satellite imageryand Google Earth[J].Landslides,2009,6(2):153-159.
[8]许强,李为乐.汶川地震诱发滑坡方向效应研究[J].四川大学学报:工程科学版,2010,42(5):7-14.
[9]程思,易加强.四川省汶川县地质灾害的成因及防治对策[J].地质灾害与环境保护,2007,18(4):1-6.
[10]黄润秋.汶川地震地质灾害研究[M].北京:科学出版社,2009.
[11]LEE C T,HUANG C C,LEE J F,et al.Statistical approach toearthquake-induced landslide susceptibility[J].Engineering Geolo-gy,2008,100(1/2):43-58.
[12]KAMP U,GROWLEY B J,KHATTAK G A,et al.GIS-based land-slide susceptibility mapping for the 2005 Kashmir earthquake region[J].Geomorphology,2008,101(4):631-642.
[2]崔鹏,韦方强,何思明,等.5.12汶川地震诱发的山地灾害及减灾措施[J].山地学报,2008,26(3):280-282.
[3]杨武年,廖崇高,濮国粱,等.数字区调新技术新方法———遥感图像地质解译三维可视化及影像动态分析[J].地质通报,2003,22(1):60-64.
[4]刘传正,李铁锋,温铭生,等.三峡库区地质灾害空间评价预警研究[J].水文地质工程地质,2004,31(4):9-19.
[5]刘传正,李铁锋,温铭生,等.长江三峡库区地质灾害成因与评价研究[M].北京:地质出版社,2007.
[6]WANG H B,SASSA K,XU W Y.Analysis of a spatial distributionof landslides triggered by the 2004 Chuetsu earthquakes of NiigataPrefecture,Japan[J].Natural Hazards,2007,41(1):43-60.
[7]SATO H P,HARP E L.Interpretation of earthquake-induced land-slides triggered by the 12 May 2008,M7.9 Wenchuan earthquake inthe Beichuan area,Sichuan province,China using satellite imageryand Google Earth[J].Landslides,2009,6(2):153-159.
[8]许强,李为乐.汶川地震诱发滑坡方向效应研究[J].四川大学学报:工程科学版,2010,42(5):7-14.
[9]程思,易加强.四川省汶川县地质灾害的成因及防治对策[J].地质灾害与环境保护,2007,18(4):1-6.
[10]黄润秋.汶川地震地质灾害研究[M].北京:科学出版社,2009.
[11]LEE C T,HUANG C C,LEE J F,et al.Statistical approach toearthquake-induced landslide susceptibility[J].Engineering Geolo-gy,2008,100(1/2):43-58.
[12]KAMP U,GROWLEY B J,KHATTAK G A,et al.GIS-based land-slide susceptibility mapping for the 2005 Kashmir earthquake region[J].Geomorphology,2008,101(4):631-642.
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