摘要
采用三维斜压非线性数值模式ECOMSED,同时考虑地形、边界流(台湾暖流、黑潮和长江冲淡水)、热通量及QuikSCAT风场等动力因子,对闽浙沿岸上升流及其季节变化进行了数值研究.结果表明,闽浙沿岸一年四季均有上升流存在,且上升流中心及上升流强度有明显的季节变化特征.其中,浙江沿岸舟山群岛和渔山列岛附近、福建沿岸海坛岛和马祖列岛附近四季均存在较强的上升流中心,上升流强度季节变化特征是"冬弱夏强".冬季上升流强度为10-3cm/s量级,沿岸平均上升流速约为0.3×10-3cm/s;夏季最大上升流速可达0.8×10-2cm/s,沿岸平均上升流速约为0.4×10-2cm/s.
A 3D baroclinic nonlinear numerical model ECOMSED was used to simulate the upwelling and its seasonal variation, with some dynamic factors, such as the real topography, boundary current （Taiwan warm current, Kuroshio and Changjiang outflow）, heat flux, and QuikSCAT wind field, taken into account. The result shows that upswelling occurs along Fujian and Zhejiang coast throughout the whole year, and its center and strength change evidently in different seasons, with the strong upwelling centers occurring near Zhoushan islands and Yushan chain islands along Zhejiang coast and Haitan island and Mazu chain islands along Fujian coast. Moreover, the upswelling is relatively weak in winter and strong in summer. The intensity of upswelling is about 10^-3cm/s and the average upswelling speed along the coast is about 0.3 × 10^-3 cm/s in winter, while the maximum upswelling speed could reach 0.8 × 10^-2cm/s and the average upswelling speed is about 0.4× 10^-2 cm/s in summer.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
北大核心
2007年第4期464-470,共7页
Journal of Hohai University(Natural Sciences)
基金
中国科学院知识创新工程项目(kzcx2-yw-201)
河海大学水文水资源与水利工程科学国家重点实验室开放研究基金资助项目(2005406811)
国家自然科学基金资助项目(5067901950009001)
江苏省自然科学基金资助项目(BK2000004)
江苏省社会发展科技计划资助项目(BS2006095)
