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The Influence of Stationary Periodic Wave Structures on the Local Strength of an Ice Field

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Abstract

The influence of nonlinear wave structures on the local hardness of an ice field of a dynamic type of formation is studied. Wave structures are formed by the interference of flexural–gravitational and longitudinal waves. The source of oscillations is coherent radiation in the ice itself. The difference in the local hardness of ice in the nodes and antinodes of standing waves (up to 60%) is explained by the dynamic metamorphism of ice. The dependences of the local ice hardness on the coordinates in the longitudinal and transverse profiles of the ice field have the form of periodic curves. The texture scales were determined, and the phase surface of the wave structures was constructed, which is not monochrome and reflects the spatial heterogeneity of the strength properties of the ice field. The effect of the wave action depends on the conditions at the interface between the ice and the pool walls. The influence of wave structures on the strength properties of the ice field as one of the possible factors of the spatial variability of ice under various modes of occurrence in situ is quantified.

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Funding

This study was supported by the Russian Foundation for Basic Research, project no. 20-01-00649.

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Authors and Affiliations

  1. Ishlinskii Institute for Problems in Mechanics, Russian Academy of Sciences, 117526, Moscow, Russia

    V. P. Epifanov

  2. Krylov State Research Center, 196158, St. Peterburg, Russia

    K. E. Sazonov

Authors
  1. V. P. Epifanov
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  2. K. E. Sazonov
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Correspondence to V. P. Epifanov.

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Translated by N. Podymova

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Epifanov, V.P., Sazonov, K.E. The Influence of Stationary Periodic Wave Structures on the Local Strength of an Ice Field. Dokl. Phys. 65, 418–423 (2020). https://doi.org/10.1134/S1028335820120046

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  • DOI: https://doi.org/10.1134/S1028335820120046

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