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ANALYSIS OF THE VELOCITY PROFILE IN LAKE SHIRA IN SUMMER USING PRINCIPAL COMPONENT ANALYSIS

O. Voldko, L. Kompaniets, L. Gavrilova

First published: 2017-06-20https://doi.org/10.5593/sgem2017/31/s15.105View metrics

Abstract

The development of modern technologies allows us to solve the problem of carrying out long-term measurements of velocity and temperature in lakes. The long-term local measurements of velocity have been conducted in Lake Shira (Khakassia) in the period 2014-2015.The velocity profile along the column of the liquid in Lake Shira occurs due to density summer stratification and wind. The horizontal velocities vary greatly in depth as well as in time. The principal component method has been performed to analyze the horizontal velocities. This method is widely used to evaluate complex space-time structures, since it allowsto describe the data compactly.The obtained data have been decomposed into empirically determined modes with different scales. This makes it possible to extract dominant modes in the data and in some cases to determine the corresponding physical process.The first empirical modes in all measures are analogous to the Ekman spiral of the stationary motion of a homogeneous liquid and the remaining modes can correspond to internal waves.

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Title
ANALYSIS OF THE VELOCITY PROFILE IN LAKE SHIRA IN SUMMER USING PRINCIPAL COMPONENT ANALYSIS
Authors
O. Voldko, L. Kompaniets, L. Gavrilova
Proceedings
SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; 17th International Multidisciplinary Scientific GeoConference SGEM2017, Water Resources. Forest, Marine and Ocean Ecosystems
Publisher
STEF92 Technology
Year
2017
Pages
831-838
SWS Citekey
Voldko201715831838
ISSN
1314-2704
ISBN
978-619-7408-04-1
Language
en
Publication type
Conference Paper
Keywords
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