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首页> 外文期刊>Nonlinear processes in geophysics >Kinematic parameters of internal waves of the second mode in the South China Sea
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Kinematic parameters of internal waves of the second mode in the South China Sea

机译：南海第二模式内部波的运动学参数

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Spatial distributions of the main properties of the mode function and kinematic and non-linear parameters of internal waves of the second mode are derived for the South China Sea for typical summer conditions in July. The calculations are based on the Generalized Digital Environmental Model (GDEM) climatology of hydrological variables, from which the local stratification is evaluated. The focus is on the phase speed of long internal waves and the coefficients at the dispersive, quadratic and cubic terms of the weakly non-linear Gardner model. Spatial distributions of these parameters, except for the coefficient at the cubic term, are qualitatively similar for waves of both modes. The dispersive term of Gardner's equation and phase speed for internal waves of the second mode are about a quarter and half, respectively, of those for waves of the first mode. Similarly to the waves of the first mode, the coefficients at the quadratic and cubic terms of Gardner's equation are practically independent of water depth. In contrast to the waves of the first mode, for waves of the second mode the quadratic term is mostly negative. The results can serve as a basis for expressing estimates of the expected parameters of internal waves for the South China Sea.
机译：第二种模式的模式功能和运动和非线性参数的主要特性的空间分布是为了南海在7月份为典型的夏季条件推导出来的第二种模式。该计算基于水文变量的广义数字环境模型（GDEM）气候学，评估局部分层。重点是长内部波的相位速度和弱非线性加德纳模型的分散，二次和立方术语处的系数。除了立方术语的系数之外，这些参数的空间分布是定性类似的两种模式的波。第二模式的内部波的加德纳的公式和相速的分散项分别是第一模式波的波的一定季度和一半。与第一模式的波类似，加德纳等式的二次和立方方格的系数实际上与水深不同。与第一模式的波对比，对于第二模式的波，二次术语主要是负的。结果可以作为表达南海内部海浪预期参数估计的依据。

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