孙丽娜, 赵亚红, 齐玉妍, 杨锐. 晋冀蒙交界区较强震前的地震活动特征研究[J]. 华北地震科学, 2014, 32(4): 29-33. DOI: 10.3969/j.issn.1003-1375.2014.04.006
引用本文: 孙丽娜, 赵亚红, 齐玉妍, 杨锐. 晋冀蒙交界区较强震前的地震活动特征研究[J]. 华北地震科学, 2014, 32(4): 29-33. DOI: 10.3969/j.issn.1003-1375.2014.04.006
SUN Li-na, ZHAO Ya-hong, QI Yu-yan, YANG Ru. STUDY ON SEISMIC ACTIVITY CHARACTER OF MEDIUM-SMALL EARTHQUAKE IN THE JUNCTURE AREA OF SHANXI,HEBEI AND INNER MONGOLIA[J]. North China Earthquake Sciences, 2014, 32(4): 29-33. DOI: 10.3969/j.issn.1003-1375.2014.04.006
Citation: SUN Li-na, ZHAO Ya-hong, QI Yu-yan, YANG Ru. STUDY ON SEISMIC ACTIVITY CHARACTER OF MEDIUM-SMALL EARTHQUAKE IN THE JUNCTURE AREA OF SHANXI,HEBEI AND INNER MONGOLIA[J]. North China Earthquake Sciences, 2014, 32(4): 29-33. DOI: 10.3969/j.issn.1003-1375.2014.04.006

晋冀蒙交界区较强震前的地震活动特征研究

STUDY ON SEISMIC ACTIVITY CHARACTER OF MEDIUM-SMALL EARTHQUAKE IN THE JUNCTURE AREA OF SHANXI,HEBEI AND INNER MONGOLIA

  • 摘要: 晋冀蒙交界区自1998年张北MS6.2 级地震以来,经历了10多年的中强震平静期。基于这一背景,本文利用1970-2013年的中小震资料,对晋冀蒙交界地区的中小地震活动进行分析。发现在1989年山西大同-阳高MS5.9级地震,1998年河北张北MS6.2 级地震和2010年山西大同MS4.6 级地震前2年内,以震中为中心3°×3°范围内中小地震活动月频次及强度有明显的增强-衰减-发震这一特征。这可能是一种具有预测意义的现象,对该地区的较强地震预报有一定的参考价值。

     

    Abstract: The juncture area of Shanxi,Hebei and Inner Mongolia has experienced medium-strong earthquakes quiet period for ten years since the 1998 Zhangbei MS6.2 earthquake.Based on this background, this paper uses the medium-small earthquake date from 1970 to 2013 to analyze the activities of mediumsmall earthquakes in the juncture area of Shanxi,Hebei and Inner Mongolia.It is found that 2 years before the 1989 Datong-Yanggao Ms5.9 earthquake,the 1998 Zhangbei MS6.2 earthquake and the 2010 Datong MS4.6 earthquake,in the epicenter of 3°×3°range,the month frequency of medium-small earthquake activities show obviously the process of increasing-attenuating-main earthquake occurring.This may be predictive meaning phenomenon has certain reference value to the strong earthquake prediction in the area.

     

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