Dynamic Change Detection Based On The Coastline Of The Yellow River Delta In Rs And Gis Simulation And Prediction Research

The environment evolution of the Yellow River Delta is rapid andcomplicated, and it chiefly lies on the change of the coastline. As a kind ofmonitoring method, Remote Sensing technology was combined with GeographicInformation System (GIS), which is a very useful tool for studying the dynamicevolution of the coastline in the Yellow River Delta. Under this background, thestudy on the recent evolution of the coastline there through the intergration ofRemote Sensing and GIS can not only provide the foundation to harness thebayou but also serve for the sustainable development of the Delta.Under support of remote sensing and GIS, multi-temporal Remote Sensingdata, terrain data and hydrological data were applied to the study on thecoastline evolution of the Delta since 1976, which includes following parts:(1)Study on the dynamic monitoring of the coastline. In this section theevolution process of the coastline in the bayou area and Diaokou bayou area wasanalysed through overlay analysis of GIS. Furthermore, the evolution rules andthe enfluence factors were also analysed briefly. In a word, the dynamicmonitoring of the coastline is the basis of this study.(2)Correlation analysis of the water and sand sedimentation and thecoastline evolution. On the basis of the monitoring data , the relations wasanalysed by the combination of remote sensing data and coastline data with theIIhydrological data, and then gave out a forecasting of future development ofcoastline in the river mouth area.(3)3D simulating display of the coastline. Based on the principle of 3Dmapping, the Digital Elevation Model was generated and the simulating displayof the coastline in 1984 was completed in this section.(4)Build up the grey models about the coastline evolution. By the use ofthe grey models, the forecasting of the coastline configuration was finished,which reflect the trend of the coastline evolution.