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依据在作者的前文（１９９８）中对于考虑旋转向量水平分量（ｆ～）的大洋内波方程求出的渐近解，文中对Ｓ场（考虑ｆ～条件下的总的内波场），ＳＩ场（不计ｆ～影响的内波场）和ＳＦ场（Ｓ场中与ｆ～相关联的部分）导出了能量谱和相干谱。此理论谱与Ｍｕｌｅｒ等（１９７８）的ＩＷＥＸ实验的观测结果相比较表明，ＳＦ场的水平动能谱和铅直位移谱基本上与水平流细结构和铅直位移细结构的观测谱一致。作者推测ＳＦ场对应于中纬度大洋可逆细结构。但是对于相干谱的观测结果，在不考虑内波非线性相互作用和破碎过程的条件下，仅考虑ＳＦ场的影响还不能给予满意的解释。
Based on the asymptotic solution of the intra-oceanic wave equation that takes into account the horizontal component of the rotational vector (f ~) in the author’s earlier article (1998), the S field (the total internal wave field considering f ~), the SI Field (excluding the internal wave field affected by f ~) and the SF field (the part associated with f ~ in the S field). The comparison between this theory spectrum and the observation results of IWEX experiment by Muler et al. (1978) shows that the horizontal and vertical displacement spectra of SF field are basically the same as the observation spectra of horizontal flow fine structure and vertical displacement fine structure. The authors speculate that the SF field corresponds to a mid-latitude oceanic reversible fine structure. However, for the observations of the coherent spectrum, it is not possible to give a satisfactory explanation considering only the influence of the SF field without considering the nonlinear internal wave interaction and the crushing process.