福建政和-海丰断裂带地震活动趋势讨论  

Discussion On The Seismicity Trend Of Zhenghe-haifeng Fault Zone In Fujian Province

作　　者：许振栋[1] 杨贵[2] 林慧卿[3] 方传极[4] 姚济棽 

机构地区：[1]福建省地震局平潭地震台,福建平潭350400 [2]福建省地震局监测中心,福建福州350003 [3]福建省地震局永安地震台,福建永安366000 [4]福建省地震局南平地震台,福建南平353000

出　　处：《科学技术创新》2021年第2期21-23,共3页Scientific and Technological Innovation

摘　　要：本文通过对福建政和-海丰断裂带历史地震和地震地质构造背景以及1971年有测震仪器记录以来该断裂带地震活动特征和时序曲线进行分析,认为政和-海丰断裂的地震活动是在主体北东向政和-海丰断裂带和次一级北西向永安-晋江断裂带以及闽江断裂带相互交汇的构造影响下,形成了4.5~5级左右中强地震反复发生的震源区,该断裂带上的地震目前基本上已进入相对平静阶段,今后一至两年或稍长时间内将仍保持这一较平静格局的可能性较高。Based on the analysis of historical earthquake and seismogeological structure background of Zhenghe-Haifeng fault zone in Fujian Province,and the seismicity characteristics and time series curve of the fault zone were recorded by seismographs since 1971,It is considered that the seismicity of Zhenghe-Haifeng fault zone was influenced by the intersection of the main NE trending Zhenghe-Haifeng fault zone,the secondary NW Yongan-Jinjiang fault zone and Minjiang fault zone,forming the focal area where moderate strong earthquakes with M4.5~5 occured repeatedly,the seismicity on the fault zone have basically entered a relatively quiet stage,this pattern will likely remain stable for one to two years or a longer period.

关 键 词：政和-海丰断裂带 地震活动 特征分析 趋势讨论 

分 类 号：P315[天文地球—地震学]