.Net-based WebGIS earthquake prevention and disaster reduction service system in cities

The key to WebGIS technology is to develop vector geography graph through the internet and provide the information service for general browsers and users.Considering the complexity,multiplicity and magnanimous space of the earthquake disaster evaluation information,based on analysis of the deficiency of the current WebGIS field,this article studies the implementation model and the technological features of.Net.In light of the idea of multi-tier and component,a new architecture of.Net-based WebGIS system is constructed.The earthquake prevention and disaster reduction service system is a complicated system.It helps government departments to find shortcomings in the earthquake prevention measures and provides government departments with useful data and methods of earthquake hazard mitigation before all earthquakes coming.In this paper,according to the project of building,earthquake prevention and disaster reduction service system in Xi'an′ Yanliang district,the technological feature and the implementation of.Net-based WebGIS system are discussed.The studies on environmental design,frame model and geographic database framework of the system are carried out.The function modules,design method and application example of this system are illustrated.