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首页> 外文期刊>Natural hazards and earth system sciences >Temporal clustering of the seismicity of the Absheron-Prebalkhan region in the Caspian Sea area
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Temporal clustering of the seismicity of the Absheron-Prebalkhan region in the Caspian Sea area

机译:里海地区阿布歇隆-普里巴尔汉地区地震活动的时间聚类

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摘要

The historical and instrumental catalog of the Absheron-Prebalkhan region in the Caspian Sea area was analyzed in order to reveal the existence of temporal clustering in the time dynamics of the seismicity. The timespan of the catalog is from 1842 to 2012 and the magnitude of the events ranges from 2.5 to 6.8. The Gutenberg-Richter analysis indicates 4.0 as the completeness magnitude of the catalog. The temporal clustering analysis was performed over the sequence of events with magnitude M ≥ 4 by using the methods of the Allan Factor and the coefficient of variation. Both the methods have revealed the presence of timeclusterized structures in the time dynamics of large events in the Absheron-Prebalkhan region. Such findings, which suggest a non-Poissonian behavior of the seismicity of the investigated area, could contribute to a deeper knowledge of the time dynamics of the seismicity and to a better assessment of the relative seismic hazard.
机译:分析了里海地区阿布歇隆-普里巴尔汉地区的历史和仪器目录,以揭示地震活动时间动态中存在时间集群。目录的时间范围是1842年到2012年,事件的大小范围是2.5到6.8。古腾堡—里希特分析表明该目录的完整性等级为4.0。通过使用Allan因子和变异系数的方法对M≥4的事件序列进行时间聚类分析。两种方法都揭示了阿布歇隆-普雷巴尔汉地区大事件的时间动态中存在时间簇结构。这些发现表明所研究区域的地震活动具有非泊松行为,这可能有助于加深对地震活动时间动态的了解,并有助于更好地评估相对地震危险性。

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