A Study of GIS Based Risk Assessment of Meteorological Disasters in Tibet

Tibet is of broad expanse and greatly varied natural conditions. Due to the serious meteorological disasters, there are heavy disaster prevention and mitigation tasks. However, all places are of different disaster mitigation objectives therefore it´s a basic principle to implement zone disaster mitigation measures. By using the disaster information from the 38 meteorological stations in Tibetan, utilizing the assessment model of meteorological disaster and thought of signal processing and based on the application of GIS technology to the risk index of disaster, the risk assessment and division of 7 meteorological disasters such as drought, flood, snow disaster, frost, hail, gale and thunderstorm are made. This improves the spatial density and accuracy of the risk assessment and division of disasters in Tibet and provides a solid foundation for the zonal risk mitigation measures of Tibet, which is also of significance to the cognition of the plateau climate and disasters.