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http://dx.doi.org/10.9765/KSCOE.2017.29.6.279

Distribution Characteristics on the Parameters of Vertical Tidal Current Profile at Uldolmok, Jindo, Korea  

Ko, Dong Hui (Coastal Development Research Center, Division of Coastal Engineering, Korea Institute of Ocean Science and Technology)
Park, Jin Soon (Coastal Development Research Center, Division of Coastal Engineering, Korea Institute of Ocean Science and Technology)
Cho, Hong Yeon (Corresponding author: Hong Yeon Cho, Ocean Data Science Division, Korea Institute of Ocean Science and Technology)
Park, Jun Seok (Coastal Development Research Center, Division of Coastal Engineering, Korea Institute of Ocean Science and Technology)
Lee, Gi Seop (Corresponding author: Hong Yeon Cho, Ocean Data Science Division, Korea Institute of Ocean Science and Technology)
Choi, Hyukjin (Coast and Ocean Technology Research Institute)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.29, no.6, 2017 , pp. 279-285 More about this Journal
Abstract
In general, the power law and logarithmic profile are commonly used as flow vertical velocity profile model. However, since the parameters of profile vary with characteristics of coastal environment, it is necessary to estimate these values from measured data using regression analysis. In this paper, we estimated the power law exponent (n), friction velocity ($u^*$) and roughness length ($z_0$) of logarithmic profile by analyzing measured tidal current data that are averaged at a interval of 30 min. In the results of analysis, power law exponent (n) was estimated to be about 10.75 during flood and about 9.3 during ebb. Meanwhile, $u^*$ of logarithmic profile was estimated to be about 0.084 m/s, 0.105 m/s during flood and ebb, respectively. Also, $z_0$ was estimated to be 0.004 m and 0.006 m, respectively.
Keywords
power law; logarithmic profile; current profile; power law exponent; friction velocity; roughness length;
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Times Cited By KSCI : 1  (Citation Analysis)
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