丽江大研镇震灾分布和地脉动测量结果之间的相关性

CORRELATIVITY BETWEEN THE EARTHQUAKE DISASTER DISTRIBUTION AND THE RESULTS OF MICROTREMOR IN DAYAN TOWN,LIJIANG

丽江７０级地震后，大研镇被毁建筑物的地理分布呈显４条条带，伤亡人员的地理分布和上述条带重合。９１个短周期地脉动测点的观测资料表明，分布在上述条带内的大多数测点，其卓越周期大于０３Ｓ；条带外的测点，其卓越周期一般在０１Ｓ左右。作者认为卓越周期和烈度异常之间良好的相关性。

The destroyed buildings in Dayan after the M 7 0 Lijiang earthquke are distributed geographically in the four strips, whick coincide geographical distribution of injuried and deaths. The observation data from short-period ground microtremor at the 91 observation points show that the predominat periods at most of the points distributed in strips are more than 0 35 and the predominant periods at the points outsides the strips are generally about 0 15. The authors believe that the good correlativity between the predominant period and intensity anomalies should be attributed to the good correlativity between the predominant period of ground microtremor and the spectrum of local earthquake.