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Abstract <p>According to the data obtained during cruise 92 of the RV <i>Akademik Mstislav Keldysh</i> on October 11–13, 2023, in the northern part of the Ob estuary, the submeridional position of the estuarine front is shown under conditions of small discharge of the Ob River. The paper discusses the influence of external factors (river runoff, wind stress, tides) on the hydrological and hydrochemical structure of water in the Ob estuary. Based on the data obtained, four types of water are identified that form a complex thermohaline structure in the northern part of the Ob estuary and adjacent shallow shelf of the Kara Sea, separated by frontal sections with sharp vertical density gradients.</p>

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Hydrological and Hydrochemical Features of the Ob Estuary (Kara Sea) in the Season Preceding Winter

  • 期刊论文

  • 发表日期：

    2025年6月1日

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  • A. A. Nedospasov,
  • S. V. Stepanova,
  • E. A. Aglova,
  • A. S. Shchuka

摘要

Abstract

According to the data obtained during cruise 92 of the RV Akademik Mstislav Keldysh on October 11–13, 2023, in the northern part of the Ob estuary, the submeridional position of the estuarine front is shown under conditions of small discharge of the Ob River. The paper discusses the influence of external factors (river runoff, wind stress, tides) on the hydrological and hydrochemical structure of water in the Ob estuary. Based on the data obtained, four types of water are identified that form a complex thermohaline structure in the northern part of the Ob estuary and adjacent shallow shelf of the Kara Sea, separated by frontal sections with sharp vertical density gradients.