云南楚雄地区成组强震与单个强震的前兆差异性研究  

Study of the Precursor Differences between the Grouped Strong Earthquakes and the Single Strong Earthquake in Chuxiong Region, Yunnan Province

作　　者：石绍先[1] 曹刻[1] 徐彦[1] 和宏伟[1] 石绍先 曹刻[1] 徐彦[1] 和宏伟[1] 

机构地区：[1]云南省地震局，昆明650041

出　　处：《地震研究》2004年第2期111-118,共8页Journal of Seismological Research

基　　金：十五国家科技攻关项目资助 (课题编号 2 0 0 1BA60 1B0 1-0 2 -0 4)

摘　　要：以 1 995与 2 0 0 0年发生在云南楚雄地区武定、姚安的两次 6 5级强震为例 ,研究了成组强震和单个强震的前兆差异性。发现在远源区、近源区及源区的前震活动、地震序列、前兆群体异常及边界动力条件方面的差异十分显著。In Chuxiong region, Yunnnan Province, a strong earthquake with the magnitude of 6 5 occurred in Wunding County in 1995 and another one with the same magnitude occurred in Yao'an County in 2000.Taking these two earthquakes as the samples, the precursory differences between grouped strong earthquakes and the single strong earthquake are studied.The results show that the foreshock activity, earthquake sequence, grouped precursor anomaly and the boundary dynamic condition will have distinctive variations in different areas such as far-source area, near-source area and the focal area.These variations are significant in the practice of discriminating grouped strong earthquakes and single strong earthquake and in the prediction of succeeding strong earthquakes.

关 键 词：地震预报 成组强震 单个强震 前兆差异性 云南楚雄 

分 类 号：P315.72[天文地球—地震学]