摘要
用加卸载响应比理论对张北- 尚义MS6.2 地震前加卸载响应比随时间的变化进行了较详细的研究。结果表明,震前加卸载响应比有较明显的上升异常。异常出现的时间、异常幅度大小与所选择的区域有关,与所选取的震级下限有关,而且,还与发震构造和控震构造有关。异常与地震的对应关系表现为:上升异常出现,转折并恢复到正常值附近时发震。异常持续时间,短的半年以上,最长约6 年左右。
In this paper,by the load-unload response ratio theory,the variational characteristics of the load-unload response ratio before and after the Ms6.2 earthquake have been studied.The result showed that there was an obvious anomaly of the loas-unload response ratio before the earthquake.The influence factors to the anomaly include time,amplitude,selected region,magnitude lower limit,and seismotectonics also.The relationship between anomaly and earthquake showed that the earthquake occurred when the anomaly raised,turned and retumned to normal.The time of the anomly lasted half a year to six years.
出处
《华北地震科学》
1999年第4期32-38,共7页
North China Earthquake Sciences
关键词
地震预报
地震构造
加卸载
响应比理论
Zhangbei-Shangyi Ms6.2 earthquake
eartthquake prediction
the load-unload response ratio
