节点文献
2003年6、7月西昌二次4.8级地震的预测与分析
Analysis and prediction on two Xichang earthquakes with M4.8 in June and July 2004
【摘要】 2003年6月17日和7月10日,先后在四川省西昌市和西昌—昭觉间发生2次ML4 8级强有感地震。对于这2次地震,我们曾作了较好的中期和短期预测。但是对于6月17日发生的第一次ML4 8级地震,未能做出临震预测;对于第二次地震,则在7月1日向上级填报的周会商表中作了明确的临震预测,7月10日,在西昌—昭觉间发生了ML4 8级地震。根据西昌地震遥测台网各子台的P波初动求解震源机制,结合地震所处的地质构造以及现场烈度考察圈定出的结果分析,认为这二次地震是由安宁河断裂带、则木河断裂、凉山断裂所围成的凉山小菱形块体活动的结果。
【Abstract】 Two earthquakes with M_L4.8 occurred on 17 June and 10 July 2003 separately in Xichang.Before these earthquakes,the intermediate-and short-term earthquake predictions were made but the imminent earthquake prediction for the first event was not made.According to the focal mechanism solution with P waves first movement and the seismological and geological structures (along) Anninghe,Zemuhe and Liangshan faults,we think that the two earthquakes result from the activities of these faults.
【Key words】 two Xichang M4.8 earthquakes; earthquakes prediction; focal mechanism; analysis of series;
- 【文献出处】 四川地震 ,Earthquake Research In Sichuan , 编辑部邮箱 ,2004年04期
- 【分类号】P315.75
- 【被引频次】3
- 【下载频次】52