{"title":"Properties of Dynamical Systems Driving Seismicity in Kamchatka and Japan","authors":"A. S. Cherepantsev, V. B. Smirnov","doi":"10.1134/S1069351326700424","DOIUrl":null,"url":null,"abstract":"<p>Analysis of seismicity in Kamchatka and Japan demonstrates that, within the framework of nonlinear dynamical systems, it is possible to estimate the key parameters of a system of equations acting as a “generator” of the seismic regime. Based on the introduced seismic parameter, estimates are obtained for the embedding dimension and the fractal dimension of the phase portrait for the dynamic seismicity system. The former indicates the dimension (the required number of equations) of the dynamical system needed to describe the seismic regime, whereas the latter reflects the degree of chaos (randomness) in the system’s solution. This analysis spans a wide range of energy, spatial, and temporal scales. A distinct shift in the properties of such a system generating the dynamics of seismicity is observed in association with the Tohoku megaearthquake.</p>","PeriodicalId":602,"journal":{"name":"Izvestiya, Physics of the Solid Earth","volume":"62 3","pages":"414 - 429"},"PeriodicalIF":0.7000,"publicationDate":"2026-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Izvestiya, Physics of the Solid Earth","FirstCategoryId":"89","ListUrlMain":"https://link.springer.com/article/10.1134/S1069351326700424","RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"GEOCHEMISTRY & GEOPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
Analysis of seismicity in Kamchatka and Japan demonstrates that, within the framework of nonlinear dynamical systems, it is possible to estimate the key parameters of a system of equations acting as a “generator” of the seismic regime. Based on the introduced seismic parameter, estimates are obtained for the embedding dimension and the fractal dimension of the phase portrait for the dynamic seismicity system. The former indicates the dimension (the required number of equations) of the dynamical system needed to describe the seismic regime, whereas the latter reflects the degree of chaos (randomness) in the system’s solution. This analysis spans a wide range of energy, spatial, and temporal scales. A distinct shift in the properties of such a system generating the dynamics of seismicity is observed in association with the Tohoku megaearthquake.
期刊介绍：
Izvestiya, Physics of the Solid Earth is an international peer reviewed journal that publishes results of original theoretical and experimental research in relevant areas of the physics of the Earth''s interior and applied geophysics. The journal welcomes manuscripts from all countries in the English or Russian language.
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