摘要
本文依据海城7.3级地震原有地震地表破裂带分布资料,选择地表破裂带最发育的孤山—岔沟—水泉—土台子一带,布设21条垂直于该带的测线,进行氡气探测,经探槽验证和对比观测,分析认为氡浓度高值异常是由北西西向断裂引起的,海城极震区内断续存在北西西向断裂带.
Based on the data of ground rupture distribution of Haicheng earthquake (Ms=7.3) in this paper, we do Rn measure gas along NWW direction belt of Gushan-Chagou-Shuiquan-Tutaizi-the most growing area of shrface rupture and the most serious damage zone. By trenching test and comparing with the resultsof Rn gas measurement on the belt which appears to be no fault but to have only ground fissure, it is believed that the anomaly peak of Rn concentration was caused by NWW direction fault. There exists indeed NWW direction fault zone off and on in the meizoseismal region of Haichehg earthquake(Ms=7.3).
出处
《防灾减灾学报》
1991年第2期45-52,共8页
Journal of Disaster Prevention And Reduction
