Data assimilation modeling of the barotropic tides in the Korea/Tsushima Strait SCIE SCOPUS

Cited 10 time in WEB OF SCIENCE Cited 13 time in Scopus
Title
Data assimilation modeling of the barotropic tides in the Korea/Tsushima Strait
Author(s)
Book, JW; Pistek, P; Perkins, H; Thompson, KR; Teague, WJ; Jacobs, GA; Suk, MS; Chang, KL; Lee, JC; Choi, BH
Publication Year
2004-12
Abstract
During 1999-2000, 13 bottom mounted acoustic Doppler current profilers (ADCPs) and 12 wave/tide gauges were deployed along two lines across the Korea/Tsushima Strait, providing long-term measurements of currents and bottom pressure. Tidally analyzed velocity and pressure data from the moorings are used in conjunction with other moored ADCPs, coastal tide gauge measurements, and altimeter measurements in a linear barotropic data assimilation model. The model fits the vertically averaged data to the linear shallow water equations in a least-squares sense by only adjusting the incoming gravity waves along the boundaries. Model predictions are made for the O-1, P-1, K-1, mu(2), N-2, M-2, S-2, and K-2 tides. An extensive analysis of the accuracy of the M-2 surface-height predictions suggests that for broad regions near the mooring lines and in the Jeju Strait the amplitude prediction errors are less than 0.5 cm. Elsewhere, the analysis suggests that errors range from 1 to 4 cm with the exception of small regions where the tides are not well determined by the dataset. The errors in the model predictions are primarily caused by bias error in the model's physics, numerics, and/or parameterization as opposed to random errors in the observational data. In the model predictions, the highest ranges in sea level height occur for tidal constituents M-2, S-2, K-1, O-1, and N-2, with the highest magnitudes of tidal velocities occurring for M-2, K-1, S-2, and O-1 . The tides exhibit a complex structure in which diurnal constituents have higher currents relative to their sea level height ranges than semi-diurnal constituents.
ISSN
0916-8370
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5196
DOI
10.1007/s10872-005-0006-6
Bibliographic Citation
JOURNAL OF OCEANOGRAPHY, v.60, no.6, pp.977 - 993, 2004
Publisher
SPRINGER
Subject
KOREA; VARIABILITY; SEAS
Keywords
Korea/Tsushima Strait; barotropic tide; data assimilation; error analysis
Type
Article
Language
English
Document Type
Article
Publisher
SPRINGER
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