Application of apparent stress in earthquake prediction

• 来源期刊: 地震学报（英文版）
• 学科: 地球科学
• 年，卷（期）: 2007,（4）
• 页码范围: 467-476
• 页数: 10页
• 分类号: P315.75
• 语种: 英文

摘要

On the basis of the assumption that ω2 model accords with source displacement spectra of moderate-small shocks, we calculate the apparent stress values of 1 020 moderate-small shocks recorded by the Digital Seismic Network of Yunnan Province by using the low-frequency flat level and corner frequencies. The results show that the apparent stress is of good significance in earthquake prediction. The moderate-small shock with apparent stress larger than 0.9 MPa can be used as a referential index to predict moderate-strong earthquakes in Yunnan area. And its relevant predictability evaluation (R value) has a high confidence level.