澳大利亚悉尼外海陆架区内波场谱特性的分析
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摘要: 本文对澳大利亚悉尼外海陆架区上历时9天的浅海锚系海流计资料作了谱分析。得出,观测得到的脉动可能是内波,其低频分量以相速0.55m/s垂直于等深线向岸传播。不同于大洋内波谱特性,观测得到的温度谱呈ω-3/2律,并在ω=N处有急剧下降,而水平动能谱在低频段呈ω-5/2律,在高频段呈ω-4/8律。观测得到内波的总能量约为GM谱的1/2,可以认为上述与GM谱之偏离是由于从远处传入之内波的耗散,浅海局地生成的内波以及细结构污染等因素所致。
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