Discharge Measurements and Roughness Coefficient Estimation in a River. The Case of Strymonas River in Northern Greece

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• 作者：Evangelos Hatzigiannakis ; Dimitrios Pantelakis…
• 关键词：Manning equation ; Bed roughness ; River discharge ; Strymonas ; Flow meter
• 刊名：Environmental Processes
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：3
• 期：1
• 页码：263-275
• 全文大小：5,031 KB
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• 作者单位：Evangelos Hatzigiannakis (1)
  Dimitrios Pantelakis (1)
  Ioannis Hatzispiroglou (1)
  George Arampatzis (1)
  Andreas Ilias (1)
  Andreas Panagopoulos (1)
  
  1. Hellenic Agricultural Organization ‘Elgo-Demeter’, Institute of Soil and Water Resources, 57400, Sindos Thessaloniki, Greece
  
• 刊物类别：Environmental Science and Engineering; Environmental Management; Waste Management/Waste Technology;
• 刊物主题：Environmental Science and Engineering; Environmental Management; Waste Management/Waste Technology; Water Quality/Water Pollution;
• 出版者：Springer International Publishing
• ISSN：2198-7505

文摘

In order to study river flow, the discharge and the channel bed roughness should be estimated. Discharge has been calculated by the continuity equation. The roughness coefficient of the Manning equation has been used with a view to estimate the bed roughness. In the literature, different values of the Manning roughness coefficient are determined for various flow conditions and geometric characteristics of river sections or different Manning roughness coefficient values are derived from calibration of various numerical models. Measurements of the flow velocity, the flow depth and the cross section area have been performed at three sections along the River Strymonas, which is located in the plain of Serres in Northern Greece. Measurements have been made over the three bridges once a month for a period of 16 months. A modern flow meter has been used in order to measure flow velocity. The monitoring results have shown that the variation of the roughness coefficient, considering the river bottom slope stable, with the hydro-geometric characteristics of the flow is noteworthy and the selection of a constant coefficient value for the simulation of the flow in Strymonas river would not be satisfactory.