| 摘要: |
| 系统研究了宁夏及邻区35次小震群活动，总结了震群活动的参数特征，探讨了震群活动与中强以上地震的关系，分析检验了前兆震群类型的判定指标。1970年以来宁夏及邻区35次小震群中有10次对应了5级以上地震，灵武-吴忠地区利用震群预测5.0级以上地震的效果较好，不建议利用震群预测宁夏南部及邻区5.0级以上地震。通过前兆震群类型的判别判断后续是否有中强以上地震，总体而言效果并不十分理想，需要参考其它方法和手段综合判定。 |
| 关键词: 宁夏及邻区 震群 参数特征 震群类型的判定指标 |
| DOI： |
| 分类号:P315 |
| 基金项目:宁夏回族自治区科技攻关计划项目（2013ZYS145）资助 |
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| The precursor analysis of earthquake swarms in Ningxia and its adjacent area |
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Ren Xuemei, Cai Xinhua, Sheng Juqin
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Earthquake Administration of Ningxia Hui Autonomous Region, Yinchuan 750001, China
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| Abstract: |
| We systematically analyzed 10 out of the 35 earthquake swarms in Ningxia and its adjacent area,summarized the characteristics of earthquake swarms and discussed the relationship between earthquake swarms and medium-strong M ≥ 5.0 earthquakes in Ningxia and its neighboring area since 1970. Swarm forecast is recommended for M ≥ 5.0 earthquakes in the Lingwu-Wuzhong region but not for MS ≥ 5.0 earthquakes in southern Ningxia and its neighboring area. Whether there is a subsequent medium-strong earthquake,the general effect of the swarm precursor discrimination is not very good and need the reference to other methods and means. |
| Key words: Ningxia and adjacent area Earthquake swarms Characteristics of earth-quake swarms Criteria of precursory earthquake swarms |
