节点文献
初始震源深度对双差定位结果的影响分析
Initial focal depth influencing on the relocation with the method of double difference
【摘要】 选取芦山M7.0地震余震中初始震源深度在10~15 km范围内的地震,通过将震源深度减小5 km、增加5 km和直接固定震源深度的方法,获得不同的震源深度值来作为初始震源深度,采用双差定位法分别对不同初始震源深度地震进行重新定位,并对定位结果的震源位置进行对比分析。通过计算,认为初始震源深度误差对双差定位结果的震中位置影响比较小,但对震源深度结果却存在一定的影响。
【Abstract】 In this article we select the aftershocks of Lushan M7. 0 Earthquake with their initial focal depths of 10 ~15 km. We use the fixed focal depth,and the methods with the focal depth of reducing and increasing by 5 km to relocation these seismic events with the method of the double difference. We compare the results and find that the initial focal depths of the earthquake has a little effect to the relocation with the method of double difference but has some of effect to the focal depths.
【关键词】 双差定位法;
重定位;
相对定位;
震源深度;
误差分析;
【Key words】 double difference location method; relocation; relative location; focal depth; error analysis;
【Key words】 double difference location method; relocation; relative location; focal depth; error analysis;
【基金】 中国地震台测震台网青年骨干培养专项(20140320)
- 【文献出处】 四川地震 ,Earthquake Research in Sichuan , 编辑部邮箱 ,2015年02期
- 【分类号】P315.33
- 【下载频次】32