摘要
本文对川滇地区1988年以来MS>5.0级地震前后ML≥3.0级地震活动的强度和频度变化进行了分析。结果认为,主震前ML≥3.0级地震活动的强度和频度曲线有一个非线性趋势增强的变化过程,主震后ML≥3.0级地震活动的强度和频度曲线仍然保持上升的非线性增强,曲线上升的非线性增强对整个区域一定时间段内有后续地震的判断给出了短期异常信息。
The intensity and frequency of earthquakes in Sichuan and Yunnan provinces since 1988 with magnitude of ML 〉 = 3.0 before or after an Ms 〉 5.0 earthquake are analyzed. Our results show that a nonlinear increasing tendency process appears before a main shock. After the main shock, the process continues with a nonlinear in- creasing tendency. The character can be helpful for the prediction of judging following earthquake within whole region in certain period after main shock.
出处
《四川地震》
2007年第4期18-25,共8页
Earthquake Research in Sichuan
关键词
地震频度
非线性曲线
地震预测
川滇地区
earthquake frequency
nonlinear change
earthquake prediction
Sichuan and Yunnan provinces
