【摘要】 利用全国地震目录数据库,系统梳理建国以来中国西部地区5.0级以上地震信息;利用信息扩散理论,从年最大震级和各级地震灾害年频次两个方面对西部12省、市、自治区的地震灾害进行风险评估。在此基础上,将风险估计离散值进行曲线拟合,系统评价中国西部地震最为多发5省区的地震风险分布趋势及差异,定量揭示中国西部地区地震风险,为西部地区地震防灾减灾提供技术支持和决策建议。更多还原

【Abstract】 Based on the national earthquake catalog database,the paper sorted out more than 5.0Ms earthquake information in western region of China;using information diffusion theory,the paper assessed the seismic risk of western twelve procinces,municipalities and autonomous regions in two aspects of annual earthquake frequency and annual maximum earthquake.On this basis,curved fitting the discrete values of the risk estimate,made a systematic review for the distribution trends and differences of seismic risk in the five provinces of China which are the most earthquake-prone,revealed quantificationally?the seismic risk in western China.Provided technical support and policy recommendations for earthquake prevention and mitigation and policy recommendations in western region of China.更多还原