The Relation of Near-Inertial Motions Observed in the Mixed layer During the JASIN (1978) Experiment to the Local Wind Stress and to the Quasi-Geostrophic Flow Field
The Relation of Near-Inertial Motions Observed in the Mixed layer During the JASIN (1978) Experiment to the Local Wind Stress and to the Quasi-Geostrophic Flow Field
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JASIN (1978) 实验期间在混合层中观测到的近惯性运动与局部风应力和准地转流场的关系
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发表时间：
1982
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通讯作者：
R. Weller
中科院分区：
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作者：
R. Weller
1978年夏末，在联合海空相互作用（JASIN）实验中，在相隔44 km的两个系泊处观测到近惯性频率振荡是上层海洋速度场的一个高能成分。每次系泊时，惯性运动的振幅在混合层中最高，几乎与深度无关。先前的工作（Pollard and Millard, 1970; Pollard, 1980）发现混合层惯性运动的幅值和相位与局部风应力有关。在这种情况下，在每个系泊处测量的当地风是连贯的；但在一个系泊处的混合层近惯性运动时间序列与另一个系泊处的时间序列几乎没有相似之处。在JASIN 1978期间，两个系泊处惯性响应的差异与两个系泊附近准地转流场的差异相吻合。在模型方程中加入准地转流的水平梯度证明了
Abstract Oscillations with near-inertial frequencies were an energetic component of the upper ocean velocity field observed at each of two moorings separated by 44 km during the Joint Air Sea INteraction (JASIN) experiment during the late summer of 1978. At each mooring the amplitude of the inertial motion was highest in the mixed layer, where it was nearly depth-independent. Previous work (Pollard and Millard, 1970; Pollard, 1980) had found that the amplitude and phase of inertial motion in the mixed layer was related to the local wind stress. In this case, the loacal winds, measured at each mooring, were coherent; but the time series of mixed-layer, near-inertial motion at one mooring bore little resemblance to that at the other mooring. During JASIN 1978 the differences in the inertial response at the two moorings coincided with differences in the quasi-geostrophic flow field in the vicinity of the two moorings. Inclusion of the horizontal gradients of the quasi-geostrophic flow in model equations prov...