Applicability of P/S amplitude ratios for the discrimination of low magnitude seismic events  

作　　者：潘常周 靳平 王红春 

机构地区：[1]Northwest Institute of Nuclear Technology

出　　处：《Acta Seismologica Sinica(English Edition)》2007年第5期553-561,共9页

基　　金：Foundation of Verification Researches for Army Control Technology (513310101).

摘　　要：Applicability of regional P/S amplitude ratios for the discrimination of low-magnitude seismic events was tested and proved using earthquakes and explosions in Central Asia. Results obtained show that regional P/S amplitude ratios which may discriminate medium or large magnitude events well, are also applicable to low magnitude events Their performances for low magnitude events are almost as good as that for medium or large events. Statistical comparisons based on 25 P/S discriminate from the four seismic stations WMQ, BLK, MUL and MAK showed that the average misclassification rate for low-magnitude seismic events averagely was only 2 percent higher than that for medium and large magnitude seismic events.Applicability of regional P/S amplitude ratios for the discrimination of low-magnitude seismic events was tested and proved using earthquakes and explosions in Central Asia. Results obtained show that regional P/S amplitude ratios which may discriminate medium or large magnitude events well, are also applicable to low magnitude events Their performances for low magnitude events are almost as good as that for medium or large events. Statistical comparisons based on 25 P/S discriminate from the four seismic stations WMQ, BLK, MUL and MAK showed that the average misclassification rate for low-magnitude seismic events averagely was only 2 percent higher than that for medium and large magnitude seismic events.

关 键 词：underground explosions low magnitude DISCRIMINANT P/S amplitude ratios 

分 类 号：P315.1[天文地球—地震学]