Geohazards observations and natural disaster assessment in China

The Chinese geohazards observations and natural disaster assessment system is established so as to make information related to environmental risk and vulnerability easily accessible to decision-makers through this centralized platform. In the case of MS 7.1 Yushu earthquake disaster, for emergence response, we presented a method for generating seismic intensity map based on seismological mechanism solutions. The disaster assessment system automatically drew the distribution map. Referring to usable data, the chains of rapid assessment on earthquake disaster are analyzed, and different models are established for assessing affected population, damaged houses and lifelines and comprehensive earthquake loss evaluation. We also established an assessment model of mud-rock flow disaster in the disaster assessment system. Take the Gansu Province, Zhouqu County 8.8 extra-large-scale mud-rock flow as example, we present the comprehensive evaluation results by using the aerial images and damaged building evaluation models.