Research on the management and expression of disaster data

Natural disasters that frequently occur may cause enormous loss of human lives and damage of properties. However, these losses can be reduced effectively by establishing disaster control and reduction system. In recent years, disaster control and reduction system based on 3D GIS are paid more attention. 3D disaster reduction system has the ability not only in managing and analyzing spatial data as well as the traditional 2D disaster reduction system, but also in processing mass data and truly expressing the 3D visualizing of geographical environment. However, there are still some technical difficulties in disaster data management and disaster information effective expression of 3D disaster reduction system. This paper discusses the method of disaster data management and disaster information expression in 3D disaster reduction system. Based on this, this paper designs a method to manage disaster data in integrated environment according to the multi-source, multi-scale and other features of disaster data. Besides that, it also describes the expression way of several variety disaster data. The experiment verifies that the proposed methods in this paper have achieved a satisfactory result.