A WebGIS-based monitoring and early-warning system for geological disasters

Abstract

This paper focuses on studies of Danjiangkou Reservoir and its neighboring areas. This region is geographically important, but the frequent occurrence of geological disasters has severely threatened the security of people living in the area, as well as the Middle Route Project for the diversion of water from south to north China. We reconstruct this area with a WebGIS-based three-dimensional (3D) real-time monitoring and early-warning system for geological disasters. This paper introduces the system's overall design, including data collection, database construction, system structure, and software function design, as well as the system's early-warning mechanism and relevant disaster prediction methods. Data storage is split into spatial and attribute databases. These combine real-time results received by sensors in the disaster zone, including transmitted data, natural geographical data, meteorological data, aerial photo and satellite data, and manual observation data. With a Browser/Server structure-based design, the 3D functionality of the system is implemented on the TerraGate platform. The proposed system is an effective disaster prediction model, and can successfully realize real-time monitoring and early-warnings of geological disasters in the area.