Research On Extraction Of Debris Flow Disaster Information Based On Gaofen-1 Data

China is one of the most severe geological disasters' countries.If the debris flow erupts,it will bring enormous losses to the downstream people's life and property,such as the residential areas,transportation lines and infrastructures all will be devastating damage.Recent years,our independent research and development satellite remote sensing data is not only excellent quality but also reasonable price.In geological remote sensing application,GF-1 and ZY-3 satellite image data,etc.are more widely utilized.Now,as the development of the domestic satellite,provided the rich data for basis geological hazard investigation and monitoring.Thesis depended on the project that is the geological environment survey of Ku Er Le Xinjiang uygur autonomous China(detailed investigation of geological disasters project)as the back,using the GF-1 satellite data to extract the debris flow disaster information in the area.With reference to the research achievements of others and full analysis,then begin to write this paper.Firstly,to do the GF-1 satellite image data's preprocessing.Secondly,extract terrain feature from the 1:50 000 digital line graph,making the DEM data of the study area.Make best use of spatial analysis function of Arc GIS to extract the slope,gully and catchment information,etc.Thirdly,I extracted the debris flow disaster information from digital ortho-photo map(DOM)of the study area.And use digital elevation model(DEM)data to extract the catchment information of the area.Neatly,I combined all of the above with the topography data to extract potential debris flow disaster information of the region.Combined with field exploration find out the debris flow disasters and the potential debris flow disasters' characteristics,know the distribution characteristics of disasters.Comprehensive analysis all above information(the debris flow hazards and potential debris flow disaster information)combined with other types of geological disasters in the study area,debris flow disasters is divided into six main partitions.Finally,select the Yu Qi Eqia debris flow gully as the typical survey area to carry out large scale geology exploration there.For the sake of taking measures to prevent the debris flow disaster destroy the cities and towns,factories and mines,important traffic along the route,engineering facilities and important scenic spot,etc.We did all the above several parts of the processing and analysis combined other major geological disasters information.Paper chooses Ku Er Le administrative Bayingol Mongolian Autonomous Prefecture of Xinjiang uygur autonomous China as the study area.There are rarely people investigate the geological hazard in the study area,especially used remote sensing to interprete the debris flow disaster information next to nothing.I'm looking forward to make contribution to the prevention and control of debris flow disaster warning and work provide some reference,through the data results of my study.