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斜压海洋水平大尺度波动各模态能量分布对风的响应 被引量:4

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摘要 将在南海持续观测近3个月、共28层的潜标海流资料与已有的6h分辨率的NCEP/NCAR风场资料结合起来进行了分析,结果表明风场在一个连续的宽频带范围内向海洋上混合层输送能量;而风的低频异常变化对流场的低频异常变化的作用则是输送能量的“最有效”途径.但这些能量只有在近惯性频率向混合层以下传播,并分别按正态分布率分配到正压流、斜压流以及斜压流的各个模态中去.其中由风引起的正压流与斜压流的能量变化的比值服从正态分布N(0.0242,0.3947);而前四个斜压模态能量变化在总的斜压能量变化中占的比值也都服从相应的正态分布:第一斜压模态服从N(0.2628,0.1872),第二模态服从N(0.1979,0.1504),第三模态服从N(0.1331,0.1633),第四模态服从N(0.0650,0.1540).
出处 《中国科学(D辑)》 CSCD 北大核心 2005年第10期997-1006,共10页 Science in China(Series D)
基金 国家重点基础研究发展规划项目(批准号:TG1999043800)
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