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Abstract <p>The paper provides a scientific basis for the hydrological and morphological regionalization of the Pyasina River mouth area, which has been studied only minimally. By analyzing water level data from the AARI expedition (1984–1987), the river boundary of the mouth area at the Igolkin Stream was identified. Marine influence extends 354 km upstream into the river. During low-flow periods, mixing of sea and river water occurs in the Pyasina River delta. Based on salinity data, Pyasina Bay is classified as an estuary. The catchment area of mouth area, calculated using GIS, is 65 300 km<sup>2</sup>.</p>

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Hydrological–Morphological Regionalization of the Pyasina River Mouth Area

  • 期刊论文

  • 发表日期：

    2025年2月1日

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  • E. V. Rumiantseva,
  • O. V. Muzhdaba,
  • A. A. Piskun,
  • M. V. Tretiakov

摘要

Abstract

The paper provides a scientific basis for the hydrological and morphological regionalization of the Pyasina River mouth area, which has been studied only minimally. By analyzing water level data from the AARI expedition (1984–1987), the river boundary of the mouth area at the Igolkin Stream was identified. Marine influence extends 354 km upstream into the river. During low-flow periods, mixing of sea and river water occurs in the Pyasina River delta. Based on salinity data, Pyasina Bay is classified as an estuary. The catchment area of mouth area, calculated using GIS, is 65 300 km2.