摘要
本文根据我国前几年地倾斜清理确认的几十次大、中强震前的异常图象及云南省定点形变台站近几年观测到的几例短期前兆异常图象,选取不同震级的定点形变前兆异常反映最远的28例进行分析研究,得出定点形变台站对不同震级的最大监测范围模式,M=2.552logD-0.707(M为震级,D为震中距),经内部符合检验和实践检验,均符合这一数值模式的监测范围,证明此数值模式确立,具有实用价值,为今后定点形变台站的布设提出了又一依据,对震级和发震极大范围的预报得出了又一新方法。
Using anomalous patterns appeared before scores of strong and moderate earthquakes confirmed bv data sorting studies carried out in China in the recent years as well as the short-term precursory anomalous patterns observed before several earthquake cases by fix-site observatories in Yunnan, precursory anomalies corresponding to 28 distant earthquakes with different magnitudes are selceted for a systematic analysis. The following model is obtained by which the maximum range may be determined for fix-site deformation observation of earthquakes with different magnitudes: M = 2.552 log D - 0.707. In the formula, M denotes the earthquake magnitude and 1) is the epicentral distance. By chseking the internal fitness and applicability of such a model, it is identified that the monitoring range provided by this model is valid and that the model i applicable. The study furnishes another hasis for deploying new fix-site d for nation station; as well as a new approach for predicting the earthquake mag itude and the maximum range likely to be hit by the predicted event.
出处
《地震研究》
CSCD
北大核心
1992年第2期162-170,共9页
Journal of Seismological Research
关键词
地震
震级
前兆
预测
台站
Precursor detected by fix-site deformation observation
Monitoring model
Maximum monitoring range
Prediction of earthquake magnitude
