ЗОНЫ ВОЗМОЖНОГО ВОЗНИКНОВЕНИЯ ЭПИЦЕНТРОВ СИЛЬНЕЙШИХ ЗЕМЛЕТРЯСЕНИЙ КАМЧАТКИ, "Физика Земли"

Дзебоев, Б. А.; Агаян, С.М.; Жарких, Ю. И.; Красноперов, Р.И.; Барыкина, Ю.В.

doi:10.7868/s0002333718020084

Физика Земли

2018

DOI: 10.7868/s0002333718020084

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ЗОНЫ ВОЗМОЖНОГО ВОЗНИКНОВЕНИЯ ЭПИЦЕНТРОВ СИЛЬНЕЙШИХ ЗЕМЛЕТРЯСЕНИЙ КАМЧАТКИ, "Физика Земли"

Б. А. Дзебоев¹,

С.М. Агаян²,

Ю. И. Жарких³

et al.

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2024

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Analysis of Spatial Clustering of Seismic Events by the DPS Topological Filtering Algorithm: Lake Baikal Region

Nekrasova,

Agayan,

Kossobokov

2024

Fizika zemli

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The paper presents the results of applying the Discrete Perfect Set (DPS) topological filtering algorithm to analyze the spatial clustering of seismic epicenters in the Lake Baikal region. The study utilizes earthquake data recorded by the seismic network of the Baikal Branch of the Geophysical Survey of the Russian Academy of Sciences within the latitude range 48°N, 58°N and longitude range of 99°E, 122°E for the period from 1964 to 2018. Clustering characteristics are obtained for (i) the recording period from 1989 to 2018 with varying parameters of the DPS algorithm and four levels of the minimum energy class KР of seismic events and (ii) six non-overlapping time intervals from 1964 to 2018 and seismic events of energy class KР ≥ 8.6 with fixed parameters of the DPS algorithm. The dynamics of the clustering parameters from 1964 to 2018 may characterise the variability of the seismic regime of the region. Specifically, the decrease in the linear size of the areas of identified epicenter groups from about a thousand km to tens km may indicate a significant change in the seismic regime of the Lake Baikal region at the end of the 1990s and the beginning of the 2000s compared to the period between 1964 and 1997.

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Analysis of Spatial Clustering of Seismic Events by the DPS Topological Filtering Algorithm: Lake Baikal Region

Nekrasova,

Agayan,

Kossobokov

2024

Fizika zemli

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Analysis of Spatial Clustering of Seismic Events in the Northwest Pacific Ocean

Agaian,

Nekrasova

2024

Fizika zemli

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The spatial clustering of epicenters of seismic events in the Northwest Pacific Ocean is analyzed using the Discrete Perfect Sets (DPS) topological filtering algorithm. The results of the analysis are presented in this paper. Based on the data shallow earthquakes recorded from 1963 to 2022 by the seismic network of the Kamchatka Branch of the Geophysical Survey of the Russian Academy of Sciences, stable areas of epicenter clustering are identified. These areas are associated with the Northern and Southern segments of the Kuril-Kamchatka seismofocal zone and do not depend on the time of recording of the earthquakes. The characteristic clustering radius for the Kuril-Kamchatka seismofocal zone is determined and is found to be 42–44 km. The analysis has confirmed the unique pattern of seismicity in the territory of the Commander segment of the Aleutian arc, which differs from that observed in the Northern and Southern segments.

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ЗОНЫ ВОЗМОЖНОГО ВОЗНИКНОВЕНИЯ ЭПИЦЕНТРОВ СИЛЬНЕЙШИХ ЗЕМЛЕТРЯСЕНИЙ КАМЧАТКИ, "Физика Земли"

Cited by 2 publications

References 0 publications

Analysis of Spatial Clustering of Seismic Events by the DPS Topological Filtering Algorithm: Lake Baikal Region

Analysis of Spatial Clustering of Seismic Events by the DPS Topological Filtering Algorithm: Lake Baikal Region

Analysis of Spatial Clustering of Seismic Events in the Northwest Pacific Ocean

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