2020年云南东川ML4.2地震序列精定位研究

来源 :地震研究 | 被引量 : 0次 | 上传用户：tianxu36966688

【摘要】

：

利用云南东川地区10个宽频带流动台站的连续波形数据,采用基于深度学习的自动震相拾取方法和震相关联技术,对2020年东川ML4.2地震序列分别进行绝对定位和相对定位,获得了该地震序列的高精度地震定位结果,得到东川ML4.2地震序列的212个余震事件,约为中国地震台网目录给出的余震数目的 5倍,丰富了ML≤3.0余震;精定位结果表明东川ML4.2主震震源深度为5.19 km,余震震源深度集中在3～6 km,余震序列分布长轴呈NNE向展布;此次地震发生在小江断裂带西支,发震构造与乌龙拉分盆地的构造演化有关.

【作者】

：

高方鸿刘志坤耿传涛

【机构】

：

中国地质大学(北京)地球物理与信息技术学院,北京100083

【出处】

：

地震研究

【发表日期】

：

2022年1期

【关键词】

：

地震定位微震检测小江断裂带双差定位法拉分盆地东川ML4.2地震

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2020年云南东川ML4.2地震序列精定位研究

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