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«IZVESTIYA IRKUTSKOGO GOSUDARSTVENNOGO UNIVERSITETA». SERIYA «NAUKI O ZEMLE»
«THE BULLETIN OF IRKUTSK STATE UNIVERSITY». SERIES «EARTH SCIENCES»
ISSN 2073-3402 (Print)

List of issues > Series «Earth Sciences». 2022. Vol 39

Water Discharge Measurement by ADCP During Freeze-up Period

Author(s)
S. V. Buzmakov, A. V. Iukhno, A. А. Zorina
Abstract
As a part of the modernization of the national hydrological network, a large number of ADCPs were delivered to the stream-gaging stations of the Roshydromet and, as a rule, used only during the open channel period. At the same time, the measurement of water discharge during the freeze-up period has always been a laborious, technically complex task, and using ADCPs during this period can optimize the measurement procedure. The article presents the issues of the features of ADCPs using on the national hydrological network of Roshydromet, the existing instrument and methodological base for measuring water discharge under the ice cover with ADCP. Either, the results of comparative field measurements of water discharge and velocities on the Ob, Neva and Oredezh rivers were considered. These rivers cover a wide range of hydrodynamic conditions: the Ob is a typical large river, with an average flow velocity is about 0.30 m/s, and a maximum depth about 20 m; the Neva is a unique large river, with a high average flow velocity value is about 0.8 m/s and a maximum depth not exceeding 11 m; the Oredezh river is a typical small river with mean flow velocity about 0.2 m/s and depths of not more than 1.5 m. In the experiments, ADCP Teledyne RiverRay and SonTek M9 were used, and comparative measurements were performed by the mechanical current meter and electromagnetic flow velocity device “Poseidon-1”. On the basis of these experiments first conclusions were drawn about the features of the ADCP application during the freeze-up period. Thus, the authors found that it is most effective to use ADCPs on medium and large rivers - labor and time costs are significantly lower than using conventional methods for measuring water flow, and the measurement accuracy is comparable. At the same time, the article notes a number of significant weak points, most of which boil down to the thesis that the measurement of water discharges using ADCP under ice involves the use of a large number of technically complex and expensive equipment, and the failure of at least one element leads to the inability to complete the measurement. Special attention is paid to the main technical aspects of working with devices, as well as with specialized software. Therefore, it is always recommended to have a spare standard measuring instrument in extra. The main technical aspects of working with devices as well as with specialized software are also discussed in more detail in the body of the article.
About the Authors

Buzmakov Sergei Victorovich, Research Scientist, Head, Hydrological Instruments Laboratory, State Hydrological Institute, 23, Vasilyevsky Island, 2nd line, Saint Petersburg, 199004, Russian Federation, e-mail: s.buzmakov@hydrology.ru

Iukhno Artem Vladimirovich, Research Scientist, Hydrological Instruments Laboratory, State Hydrological Institute, 23, Vasilyevsky Island, 2nd line, Saint Petersburg, 199004, Russian Federation,e-mail: artem-ardene@mail.ru

Zorina Alisa Andreevna, Lead Engineer, Hydrological Instruments Laboratory, State Hydrological Institute, 23, Vasilyevsky Island, 2nd line, Saint Petersburg, 199004, Russian Federation, e-mail: zorinaalisa@mail.ru

For citation
Buzmakov S. V., Iukhno A. V., Zorina A. А. Water Discharge Measurement by ADCP During Freeze-up Period. The Bulletin of Irkutsk State University. Series Earth Sciences, 2022, vol. 39, pp. 28-44. https://doi.org/10.26516/2073-3402.2022.39.28 (in Russian)
Keywords
water discharge measurement, flow velocity, freeze-up, ADCP, mechanical current meter, comparative measurements.
UDC
556.5
DOI
https://doi.org/10.26516/2073-3402.2022.39.28
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