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海洋通报  2012 

基于FVCOM的廉州湾及周边海域三维潮汐潮流数值模拟

DOI: 10.11840/j.issn.1001-6392.2012.2.003, PP. 136-145

Keywords: 廉州湾,FVCOM,潮汐,潮流,余流

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Abstract:

基于采用不规则三角网格和有限体积方法的FVCOM模式,建立廉州湾三维潮流数值模型来重现廉州湾及周边海域的潮位和潮流变化状况。根据模拟结果计算得到了较以往更为精细的廉州湾及周边海域K1、O1和M2分潮的同潮图,并计算了由此三个分潮引起的潮汐不对称的变化情况。K1和O1分潮在廉州湾外主要以驻波的形式存在,进入廉州湾后转化为前进波;M2分潮在廉州湾外主要以前进波的形式存在,进入廉州湾后前进波特征更为明显。K1和O1分潮流在廉州湾外以旋转流为主,在廉州湾内以往复流为主;M2分潮流在整个研究海域以往复流为主。由潮余流场的分布特点可以看出自南向北由外海进入廉州湾的潮余流,在冠头岭处分为两支,一支逆时针转向西,另一支被冠头岭阻挡在其南侧形成顺时针封闭环流。在廉州湾内部同时存在两个环流系统,湾顶的气旋式环流和口门处的反气旋式环流。

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