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

• 来源期刊: 地震学报(英文版)
• 学科: 地球科学
• 年，卷（期）: 2007,（5）
• 页码范围: 553-561
• 页数: 9页
• 分类号: P315.1+1
• 语种: 英文

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.