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Abstract <p>The article substantiates the requirements for the formation of a digital elevation model (DEM) for simulating the transport of suspended sediments using the example of the Terek River. It is shown that the hydrological regime (flood, high water, mean water) determines the migration of suspended matter and the accumulation of fine-dispersed fractions in the delta. A conceptual model scheme is proposed, which provides for the joint use of the one-dimensional Hydrologic Engineering Center–River Analysis System (HEC-RAS) module for the entire channel network (from the Pavlodolsk hydroelectric power station to the mouth) and the three-dimensional MIKE 3 module for critical sections. Requirements for the initial DEM data have been formulated, and analysis of factors for erosion and accumulation of bottom sediments has been performed.</p>

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Features of the Formation of a Digital Elevation Model for Simulating the Transport of Suspended Sediments

  • 期刊论文

  • 发表日期：

    2026年6月29日

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  • M. V. Ivanov,
  • A. N. Ugarov,
  • A. A. Ryazantsev,
  • V. D. Vyazova,
  • R. A. Taranov,
  • B. S. Ksenofontov

摘要

Abstract

The article substantiates the requirements for the formation of a digital elevation model (DEM) for simulating the transport of suspended sediments using the example of the Terek River. It is shown that the hydrological regime (flood, high water, mean water) determines the migration of suspended matter and the accumulation of fine-dispersed fractions in the delta. A conceptual model scheme is proposed, which provides for the joint use of the one-dimensional Hydrologic Engineering Center–River Analysis System (HEC-RAS) module for the entire channel network (from the Pavlodolsk hydroelectric power station to the mouth) and the three-dimensional MIKE 3 module for critical sections. Requirements for the initial DEM data have been formulated, and analysis of factors for erosion and accumulation of bottom sediments has been performed.