[1]郭培兰,黄惠宁,李 莎,等.华南西部地区震群活动与中强震关系研究[J].华南地震,2022,(04):86-93.[doi:10.13512/j.hndz.2022.04.12]
GUO Peilan,HUANG Huining,LI Sha,et al.Study on the Relationship Between Earthquake Swarm Activity and Moderate-strong Earthquakes in Western South China[J].,2022,(04):86-93.[doi:10.13512/j.hndz.2022.04.12]
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华南西部地区震群活动与中强震关系研究()
华南地震[ISSN:1006-6977/CN:61-1281/TN]
- 卷:
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- 期数:
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2022年04期
- 页码:
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86-93
- 栏目:
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华南地区地震预测指标体系专辑
- 出版日期:
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2022-12-10
文章信息/Info
- Title:
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Study on the Relationship Between Earthquake Swarm Activity and Moderate-strong Earthquakes in Western South China
- 文章编号:
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1001-8662(2022)04-0086-08
- 作者:
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郭培兰; 黄惠宁; 李 莎; 苏 珊
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广西壮族自治区地震局,南宁 530022
- Author(s):
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GUO Peilan; HUANG Huining; LI Sha; SU Shan
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Earthquake Agency of Guangxi Zhuang Autonomous Region , Nanning 530022, China
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- 关键词:
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广西地区; 震群; 中强震; 统计检验; 预测效能
- Keywords:
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Guangxi region; Earthquake swarm; Moderate-strong earthquake; Statistical inspection; Prediction efficiency
- 分类号:
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P315
- DOI:
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10.13512/j.hndz.2022.04.12
- 文献标志码:
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A
- 摘要:
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通过系统研究华南西部地区震群活动与中强震的关系,发现华南西部地区震群活动主震震级在ML3左右;震群活动与区域强震关系密切,小震群频度的起伏可以反映区域地震活动水平的强弱;华南西部地区震群频次超阈值2为异常,可做中短期预测,通过预测效能检验。区域震群对中强震地点的预测有积极意义:震前2年,震群呈条带状分布,中强震发生在震群条带上,震群时间和地点距中强震都是由远到近,时间跨度超1年,最远距离380km,中强震震级比震群高2~3级。
- Abstract:
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The relationship between earthquake swarm activity and moderate-strong earthquakes in Guangxi is systematically studied. The results show that the magnitude of the main earthquake of earthquake swarm activity in Guangxi is not high,about ML3;the activity of earthquake swarm is closely related to regional strong earthquakes, and the fluctuation of the frequency of small earthquake swarm can reflect the strength of regional seismicity;the earthquake swarm frequency in Guangxi exceeding the threshold 2 is regarded as anomaly,which can be predicted in the medium and short term,and passes the prediction efficiency test. Regional earthquake swarm is of positive significance to the prediction of moderate and strong earthquake sites: Two years before the earthquake, the earthquake swarm is distributed in strips, and moderate-strong earthquakes occured in the earthquake swarm strips;the time and location of the earthquake swarm are from far to near,with a time span of more than one year and the maximum distance of 380 km; the magnitude of moderate-strong earthquakes is 2-3 higher than that of earthquake swarm.
参考文献/References:
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备注/Memo
- 备注/Memo:
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收稿日期:2022-03-10
基金项目:广西科技攻关计划项目红水河流域水库地震特征的精细研究以天峨至大化段为例(桂科AB1850042);地震科技星火项目计划(XH22004YA);广西局科研合同制项目(202102)联合资助。
作者简介:郭培兰(1974-),女,高级工程师,主要从事地震编目及地震活动性分析工作。E-mail:550531839@qq.com
通信作者:黄惠宁(1985-),女,工程师,硕士,主要从事GPS数据解算及地壳形变分析研究。E-mail:lingbin
更新日期/Last Update:
2022-12-10