中文摘要：

在更深的层观察了，并且在表面层最短。Weakinertial 事件出现了在期间在 welling 事件上面强壮，当强壮的惯性的事件出现了在期间时在 welling 或弱潜水艇下面惯性的事件。在惯性附近的水流从阶段 between5 m 和 35 m 层为几乎全部测量时期，而是如此的关系在不规则的弱风的时期期间是很弱的。大坚持的南方的风从 5 月 12 日刮了到 17 并且强迫了向陆的重要的水运输并且以超过 20 厘米 s~ 的表面速度建立了一口强壮的 barotropic 杆病房喷气(-1) 。惯性的电流与风变化有关的潜水艇特别在 15 m 和 35 m 的中间的层，在沿著岸电流和沿著岸风之间的最大的关联在 5 m 层是大约 0.5 并且 0.8 在 35 m 层。沿著岸水流比跨岸的水流更快反应了。最强壮的关联一次被发现在更深的层在上面的层并且 30 h 20 h 落后。从 PWP 模型获得的风驱动的表面临有大约 7cm s~ 的最大的振幅(相应于在 0.1 Pa 的一个风压力的 -1), ，和水平速度由于有的热风平衡砍 3cm s~ 的顺序(-1) 。地方风和热风将仅仅因此解释强壮的表面临变化的部分。

英文摘要：

Observations made on the northern Portugal mid-shelf between May 13 and June 15,2002 were used to characterise the near-surface velocity during one upwelling season. It was found that in the surface mixed layer,the ＇tidal current＇ was diurnal,but the tidal elevation was semi-diurnal. Both the residual current and the major axes of all tidal constituents were nearly perpendicular to the isobaths and the tidal current ellipses rotated clockwise;the major axis of the major tidal ellipse was about 3 cm s^-1. The extremely strong diurnal current in the surface layer was probably due to diurnal heating,cooling,and wind mixing that induced diurnal oscillations,including the diurnal oscillation of wind stress. This is a case different from the results measured in the other layers in this area. The near-inertial spectral peaks occurred with periods ranging from 1 047 min to 1 170 min,the longest periods being observed in deeper layers,and the shortest in the surface layer. Weak inertial events appeared during strong upwelling events,while strong inertial events appeared during downwelling or weak subinertial events. The near-inertial currents were out of phase between 5 m and 35 m layers for almost the entire measurement period,but such relationship was very weak during periods of irregular weak wind. Strong persistent southerly wind blew from May 12 to 17 and forced a significant water transport onshore and established a strong barotropic poleward jet with a surface speed exceeding 20 cm s^-1. The subinertial current was related to wind variation,especially in the middle layers of 15 m and 35 m,the maximum correlation between alongshore current and alongshore wind was about 0.5 at the 5 m layer and 0.8 at the 35 m layer. The alongshore current reacted more rapidly than the cross-shore current. The strongest correlation was found at a time lag of 20 h in the upper layer and of 30 h in the deeper layer. The wind-driven surface velocity obtained from the PWP model had maximum amplitude of about 7 cm s^-1,corresponding t