地震 ›› 2022, Vol. 42 ›› Issue (2): 33-51.doi: 10.12196/j.issn.1000-3274.2022.02.003
文亚猛1,2, 袁道阳1, 张波2,3, 姚赟胜2,3, 冯建刚4
收稿日期:
2021-01-12
修回日期:
2022-02-12
出版日期:
2022-04-30
发布日期:
2023-02-17
通讯作者:
袁道阳, 教授。 E-mail: yuandy@lzu.edu.cn
作者简介:
文亚猛(1995-), 男, 山东菏泽人, 在读博士研究生, 主要从事活动构造与地震活动性研究。
基金资助:
WEN Ya-meng1,2, YUAN Dao-yang1, ZHANG Bo2,3, YAO Yun-sheng2,3, FENG Jian-gang4
Received:
2021-01-12
Revised:
2022-02-12
Online:
2022-04-30
Published:
2023-02-17
摘要: 甘东南及邻区活动断裂发育、 新活动性强, 历史及现代强震频发, 是探讨现代地震密集区与历史强震关联性的理想地区, 也是发展和检验网格点密集值法及其适用条件的有利地区。 本文选取介于西秦岭北缘断裂带与东昆仑断裂带东段之间, 以走滑活动为主的甘东南及邻区为主要研究区域, 采用网格点密集值法对该区1970年以来仪器记录的1~5级地震进行计算分析, 划分出16个地震密集区。 通过分析每个地震密集区内地震活动的时空分布特征, 判断地震密集区与历史强震之间的对应关系, 归纳总结不同震级历史强震对应地震密集区的持续时间, 同时给出运用网格点密集值方法校核甘东南及邻区历史强震的限定条件。 研究结果表明, 约87.5%的地震密集区对应着历史强震, 表明二者之间有较密切的关联性; 而且地震震级越大, 其对应地震密集区持续时间越长, 二者之间的边界曲线拟合关系为: T=4.5×10-7×(M-0.1)11.15。
中图分类号:
文亚猛, 袁道阳, 张波, 姚赟胜, 冯建刚. 甘东南及邻区地震密集区与历史强震的关系探讨[J]. 地震, 2022, 42(2): 33-51.
WEN Ya-meng, YUAN Dao-yang, ZHANG Bo, YAO Yun-sheng, FENG Jian-gang. Discussion on the Relationship Between Earthquake-Intensive Areas and Historical Strong Earthquakes in Southeastern Gansu and Adjacent Areas[J]. EARTHQUAKE, 2022, 42(2): 33-51.
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