中国大陆强震灾害范围的统计研究  

Statistical Research on the Strong Earthquake Risk Ranges in Chinese Mainland

作　　者：王健[1] 张晓东[1] 郁曙军 杨玉林[1] 

机构地区：[1]中国地震局地球物理研究所

出　　处：《中国地震》1998年第3期26-31,共6页Earthquake Research in China

基　　金：地震科学联合基金

摘　　要：强震的灾害范围是非常重要的地震学参数，它在地震灾害快速评估、地震保险及防震减灾等方面有着广泛的应用。本文全面、系统地收集了中国大陆宏观等震线资料，对没有地理坐标的等震线进行了数字化。精确计算了从１３０３年至１９９４年共１８３次强震的灾害范围（包括烈度异常区的面积），并对误差因素进行了分析。统计分析了强震灾害范围随烈度或随震级的变化趋势。初步探讨了地震灾害范围的分区特征，发现在同等情况下（相同震级档、相同烈度），华北地区的灾害范围要大于西南地区，与西北地区总体水平相近。Risk ranges of strong earthquakes are very important seismic parameters,and applied widely in earthquake risk fast estimation,earthquake insurance and countermeasure.We have collected macroseismic data in Chinese mainland systematically,and digitized the some isoseisms without numerical data before.We calculated areas (including those of abnormal intensity) of different intensity of 183 strong earthquakes from 1303 to 1994 accurately,and evaluated the error. We diagnosed the tendency of seismic risk ranges varying with magnitude or intensity statistically.Preliminarily,we have analyzed zonation characteristic of strong earthquake risk ranges and found that in the same situation (same magnitude bins and intensity),average areas of strong earthquake risk in North China region are larger than those in Southwest China region.Average risk areas in North China are equal with those in Northwest China region in generally.

关 键 词：中国 强震 震害 统计研究 灾害范围 

分 类 号：P315.9[天文地球—地震学]