Risk assessment and zoning of earthquake disaster in Shandong Province based on GIS

Abstract

In order to improve the ability of earthquake prevention and disaster reduction in Shandong Province and reduce earthquake losses, this paper conducted earthquake disaster risk assessment for Shandong Province based on natural disaster risk theory and GIS technology. Based on natural disaster risk theory and methods, 14 indicators were selected from the hazard, exposure, vulnerability, and disaster prevention and mitigation capability to establish the earthquake disaster risk assessment index system. The risk assessment model of earthquake disaster was established by using the analytic hierarchy process - entropy weight method. With GIS technology, the hazard, exposure, vulnerability, and disaster prevention and mitigation capability and integrated risk index in Shandong were calculated and earthquake disaster risk in Shandong was zoned. The results showed that the areas around the Tan-Lu and Liao-Kao fault zones were the medium and high risk areas, mainly affected by the hazard; some economically developed areas were the higher risk areas, such as Shinan district and Shibei district, mainly affected by the exposure of the disaster-bearing body.