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http://dx.doi.org/10.9765/KSCOE.2013.25.4.200

Characteristic Analysis of the Tidal Residuals' Mid/Long-period Components Using a Wavelet Method  

Kang, Ju Whan (Dept. of Civil Engineering, Mokpo National University)
Kim, Yang-Seon (Dept. of Civil Engineering, Mokpo National University)
Shim, Jae-Seol (Operational Ocean Science and Technology Department, Korea Institute of Ocean Science and Technology)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.25, no.4, 2013 , pp. 200-206 More about this Journal
Abstract
Fourier analysis and a wavelet method were carried out to elucidate the characteristics of tidal residual components in coastal waters. The result of Fourier analysis shows tide-induced and monsoon-induced residuals are conspicuous at the short period and mid period, respectively. The tidal residuals were decomposed by period from 3 hours to 8 months and the characteristics of their components were shown by reconstituting them with short periods less than 24 hours, mid-periods between 1 day and 16 days and long periods longer than 1 month. The tidal residuals in the short period, i.e., tide-induced components, being based on the tidal elevation prediction errors, appear in the West Sea with high tidal ranges and do not have much seasonal fluctuation. Additionally, the period of typhoon induced surge ranges more or less than 12 hours. The mid-period components were clearly generated mainly in the West Sea during the winter and largely affected by monsoon. Accordingly, the pure surge height components were concentrated on the mid-period and had clear features for each coastal waters. The long period components show similar characteristics at all stations and are considered to stem from variations of mean sea levels.
Keywords
Fourier; wavelet; tidal residual; monsoon; mean sea level;
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Times Cited By KSCI : 2  (Citation Analysis)
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