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Abstract <p>The paper analyzes tides in the La Perouse Strait based on modeling data. The calculations were performed using the ADCIRC model on a high-resolution unstructured grid. The quality of modeling was assessed based on instrumental observations of sea level at coastal stations. When comparing the modeling results with measurements, the correlation coefficient is 0.92–0.98 and the root mean square error is 0.04–0.07 m. The highest tides are observed in northern Aniva Bay: 1.6 m. All four types of tides are identified in the La Perouse Strait. Harmonic analysis of the tidal harmonics <i>M</i><sub>2</sub>, <i>S</i><sub>2</sub>, <i>K</i><sub>1</sub>, and <i>O</i><sub>1</sub> made it possible to refine the spatial structure of their amplitude–phase parameters. Semidiurnal tides come from the open part of the Sea of Okhotsk, and the phases of both harmonics change little in the area of the strait. Diurnal tides have amphidromic points located at the narrowest point of the strait between Cape Crillon and Cape Soya. The spatial distribution of their cotidal lines indicates their eastward distribution along the Okhotsk coast of Hokkaido.</p>

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Modeling of Tides in the La Perouse Strait Using a High-Resolution Grid

  • 期刊论文

  • 发表日期：

    2026年6月16日

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  • V. S. Arkhipkin,
  • V. I. Ilyin,
  • S. A. Myslenkov,
  • V. M. Pishchalnik,
  • E. M. Latkovskaya,
  • I. V. Shumilov,
  • V. A. Romanyuk,
  • A. V. Pishchalnik

摘要

Abstract

The paper analyzes tides in the La Perouse Strait based on modeling data. The calculations were performed using the ADCIRC model on a high-resolution unstructured grid. The quality of modeling was assessed based on instrumental observations of sea level at coastal stations. When comparing the modeling results with measurements, the correlation coefficient is 0.92–0.98 and the root mean square error is 0.04–0.07 m. The highest tides are observed in northern Aniva Bay: 1.6 m. All four types of tides are identified in the La Perouse Strait. Harmonic analysis of the tidal harmonics M2, S2, K1, and O1 made it possible to refine the spatial structure of their amplitude–phase parameters. Semidiurnal tides come from the open part of the Sea of Okhotsk, and the phases of both harmonics change little in the area of the strait. Diurnal tides have amphidromic points located at the narrowest point of the strait between Cape Crillon and Cape Soya. The spatial distribution of their cotidal lines indicates their eastward distribution along the Okhotsk coast of Hokkaido.