架上的在惯性附近的运动的特征(60 m 深) 北华南,海在 2009 的夏天期间在二台风的经过下面被观察。在在亚 inertial 和超级惯性的频率的系列有二座山峰。超级惯性的精力近最大化表面,当亚 inertial 精力在 15 m 的更深的层最大化时。频率的亚 inertial 移动被否定背景涡度导致。超级惯性的移动可能被归因于从更高的纬度宣传的在惯性附近的波浪。在惯性附近的水流展出被分开在的一个二层的模式中间深度(2530 m ) ,与在在更低的层对那将近相反的上面的层的阶段。阶段的垂直繁殖向下主导地暗示在惯性附近的精力不是。在惯性附近的精力的向上的流动在表面层是更明显的(< 17 m ) 。在那里存在在 17 和 40 m 的二条边界,在在惯性附近的精力向上并且向下被反映的地方。在惯性附近的运动是断断续续的并且能到达差不多 30 cm/s 的一座山峰。台风 Nangka 的经过产生一个集中的在惯性附近的事件,但是台风 Linfa 不做。这差别被归因于相对绳索地点,它在 Nangkas 路径的右手方面上(导致与时间顺时针方向旋转的一个风模式) 并且在 Linfas 路径的左手方面上(导致与时间逆时针方向的旋转的一个风模式) 。
Features of near-inertial motions on the shelf (60 m deep) of the northern South China Sea were observed under the passage of two typhoons during the summer of 2009. There are two peaks in spectra at both sub-inertial and super-inertial frequencies. The super-inertial energy maximizes near the surface, while the sub-inertial energy maximizes at a deeper layer of 15 m. The sub-inertial shift of frequency is induced by the negative background vorticity. The super-inertial shift is probably attributed to the near-inertial wave propagating from higher latitudes. The near-inertial currents exhibit a two-layer pattern being separated at mid-depth (25-30 m), with the phase in the upper layer being nearly opposite to that in the lower layer. The vertical propagation of phase implies that the near-inertial energy is not dominantly downward. The upward flux of the near-inertial energy is more evident at the surface layer (〈17 m). There exist two boundaries at 17 and 40 rn, where the near-inertial energy is reflected upward and downward. The near-inertial motion is intermittent and can reach a peak of as much as 30 cm/s. The passage of Typhoon Nangka generates an intensive near-inertial event, but Typhoon Linfa does not. This difference is attributed to the relative moor- ing locations, which is on the right hand side of Nangka's path (leading to a wind pattern rotating clockwise with time) and is on the left hand side of Linfa's path (leading to a wind pattern rotating anti-clockwise with time).