1995年7月25日那坡4.3级地震概述

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英文篇名：Summary of Napo M_S 4.3 earthquake on July 25,1995 in Guangxi 中文刊名：华南地震 英文刊名：South China Journal of Seismology 作者：郭培兰 英文作者：GUO Pei-lan(Earthquake Administration of Guangxi Zhuang Autonomous Region ; Nanning 530022 ; China) 中文关键词：震源机制解 ; 地震序列 ; 地震烈度 ; 广西那坡 英文关键词：Focal mechanism solution ; Seismic sequence ; Seismic intensity ; Napo ; Guangxi 出版日期：2005-03-30 机构：广西地震局 广西南宁530022 年：2005 期：01 出版单位：华南地震

摘要

1995年7月25日广西那坡发生了4.3级地震,通过对那坡地区的地震地质、地震前兆、地震序列等资料分析,认为此次地震发生在北东向德隆-下华断裂带上,地震等烈度线长轴为北东向,宏观震中在那坡县规弄山中,震源机制解结果表明节面Ⅰ是本次地震的主破裂面,走向北东,与德隆-下华断裂一致。由于震中附近观测台站较少,震前没有发现前兆异常,测震学资料在很大程度上又受到北部湾6.1、6.2级地震序列的影响,无法分辩异常,据震后调查震前有少量宏观异常现象出现。
Based on the analysis of information on seismic geology,earthquake precursor and seismic sequence of the area,we found that Napo MS 4.3 earquake on July 25,1995 occurred at Delong-Xiahua fault in NE direction. The macroscopical epicenter was in Guinong mountain in Napo county. The mechanism solution shows that the nodal planeⅠis the main rupture plane of this earthquake. Its direction is NE, alike Delong-Xiahua fault. We did not find precursor anomalies before the earthquake occurred because there were few seismic observatories near the epicenter, and could not distinguish abnormity because the information was affected by Beibu Gulf MS 6.1?6.2 earthquakes,but found some macroscopical abnormity after the event occurred.

引文

[1]吴时平,谭劲先,尹克坚.广西及其邻近地区MS≥4.5级地震震例研究[J].广西地震,2001,11(1):70-80.9(内部刊物).
    [2]尹克坚,黄国华,谭修权.广西那坡县下华乡4.3级地震调查报告[J].广西地震,1995,5(1):82-84(内部刊物).
    [3]王炜,庄昆元,宋俊高.测震学分析预报方法[M].北京:地震出版社,1997.152-153.