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机构地区:[1]中国海洋大学海洋系,山东青岛266003 [2]解放军理工大学气象学院,江苏南京211101
出 处:《海洋湖沼通报》2005年第4期1-9,共9页Transactions of Oceanology and Limnology
基 金:国家自然科学基金(49906001;40376005);教育部新世纪优秀人才支持计划(NCET-04-0646)资助
摘 要:本文采用三维有限元(QUODDY)模型模拟了台湾海峡的潮汐和潮流特征。模拟结果表明,有限元模型可以得到较好的模拟结果:M2,S2,O1,K1的潮位调和常数的平均绝对偏差分别为(4.18cm,7.0°),(4.68cm,11.4°),(3.52cm,7.1°)和(3.86cm,4.5°);东、北分量潮流的平均偏差M2为(10.1cm/s,29.8°)和(12.2cm/s,30.2°),而K1为(5.3cm/s,47.7°)和(5.7cm/s,49.8°)。海峡内半日潮波系统中占主导地位的是自海峡北边界传入的半日潮波。潮汐类型为正规半日潮和不正规半日潮的海区约占整个计算区域的92%以上。海峡内由四个主要分潮引起的理论最大潮差平均值为320cm,其中最大理论潮差可达681cm,出现在海峡西北部的海坛岛至兴化湾一带。The characterisitics of the tide and tidal currents in the Taiwan Strait are simulated by a three-dimensional finite element method(QUODDY) which can obtain satisfactory simulation results: the mean absolute deviations for M2 ,S2 ,O1 and K1 are (4.18cm, 7. 0°), (4. 68cm,11.4°), (3.52cm 7.1°) and (3.86,4. 5°), respecvively and the mean absolute deviations for the east and north components are (10. 1cm/s, 29.8°) and (12.2cm/s, 30.2) for M2 tidal current and (5.3cm/s 47.7°) and (5.7cm/s,49.8°) for K1 tidal current. Based on the simulation results and harmonic analysis from tide gauge data, the dominant tidal waves are the semi-diurnal constituents coming from the East China Sea. The average value of the maximal theoretical tidal range from the four principal constituents(M2 ,S2, K1, O1 ) can exceed 320cm, whose maximum is 681cm near Haitan Island and Xinghua Bay northwest of the Taiwan Strait.
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