quake sheet

Shear-wave splitting before and after the 1999 Xiuyan earthquake in Liaoning,China;

辽宁1999年M_S5.9岫岩地震的剪切波分裂特征

4 Xiuyan earthquake were analyzed.

运用直接调和分析和速率合成方法对岫岩地震前后烟台形变观测资料进行了处理分析。

3)earthquake occurred on 29 November 1999,this paper shows that obvious variations occurred before and after the Xiuyan earthquake,time delays of slow shear-waves started to increase from about 142 days before the Xiuyan earthquake.

9地震前后进行剪切波分裂分析,结果表明剪切波分裂参数在岫岩地震前后有明显的变化,慢剪切波时间延迟在岫岩地震前约142天开始增加,揭示了震前的应力积累过程。