Xinjiang Ili River Valley Multi-source Remote Sensing Image Geological Disaster Dynamic Monitoring Research

Geological disasters as a catastrophic geological events,are seriously threat to human life and property and living environment,with destructive,widely distributed,sudden and strong features.The traditional ground monitoring can not meet a large area,real-time geological disaster dynamic monitoring researcher.Remote sensing has a huge advantage in geological disasters in remote sensing interpretation,information extraction,etc.,at the same time,GIS powerful analysis has made geological hazard assessment analysis improved.In this paper,Xinyuan County,Xinjiang Ili Valley as the research object,based on multi-temporal and multi-source remote sensing images,we do multi-interpretation of geological disasters in remote sensing and dynamic monitoring information extraction,talk about major influencing factors of geological disasters,summarizes the geological disasters variation and distribution,chose water sinks as the evaluation unit,use AHP and information combination ways to build evaluation model for landslide hazard area prone to prediction analysis and evaluation.The main contents are as follows:(1)Multi-source remote sensing data processing.Based on the 2009,2012,2014 RapidEye data,2012 WorldView2,2014 GF-1 data and UAV aviation data,we handle remote sensing images with orthorectified,fusion,mosaic,cutting and other processing,produce Xinyuan County Ortho data.(2)High-resolution remote sensing image interpretation of geological disasters.We make Landslides,mudslides,avalanches detailed interpretation of geological disasters,determine geological disasters point's location,type,extent,summarize remote sensing interpreting marks.(3)Dynamic remote sensing change monitoring of geological hazards disaster-factor.Based on the results of multi-source remote sensing data dynamic monitoring of geological disasters,combined with topography,vegetation,hydrology and other relevant information,we investigate the main factors of the formation of geological disasters,and summarizes the changes in the characteristics and distribution.(4)Useing the Department of Water unit to predict the area landslide hazard prone degree.The Department of Water unit are comprehensively reflect the characteristics of the topography,land cover and geological structure,and landslides,mudslides occurred are intrinsically linked.(5)Select Analysis and AHP combination approach to building information model for Xinyuan County landslide hazard susceptibility evaluation.Through this monitoring,access to two accurate geological disaster changeing area information and disaster pregnant dynamic variation factor,based on the waters of the Department of evaluation unit,the amount of information and the use of AHP method to build evaluation model for prone geological disasters,more comprehensively response geological disaster of disaster factor intrinsical link and characterization of the degree of disaster-prone areas.