红海湾西北海区海流特征分析

利用2008年夏季和冬季的海流资料分析了红海湾西北海区潮流性质、运动形式、涨落潮流特性、余流特征。结果表明: 红海湾西北海区属不规则半日潮海域, 潮流性质属往复流, 大致呈东—西向往返运动, 具有一定的旋转流性质; 平均涨潮流最大可达17.8cm·s^-1, 平均退潮流最大可达19.3cm·s^-1; 实测流受风和地形影响明显。余流受风和地形的影响也比较明显, 在偏北风作用下, 余流流向西偏南; 在偏南风作用下, 余流流向东偏北, 余流最大可达18.9cm·s^-1。潮能主要由东部向西传播至红海湾西北海区, 潮能进入量值可达4.8×10³W·m ^-1。

Characteristics of currents in northwest of Honghai Bay

Based on the data observed during the summer and winter cruises in 2008, the type and the motion form of tidal currents, the characteristics of flood current, ebb current and the residual current in the Northwest Honghai Bay were analyzed. The results show that the tidal property in the Northwest Honghai Bay belongs to irregular semidiurnal tide. The tidal current is a reversing current with a rotary current, mainly in the east-west direction. The current is mostly affected by wind and topography. The maximum averaged velocities during flood tide and ebb tide are, respectively, 17.8 and 19.3 cm·s^-1. Under the northerly wind and southerly wind, the residual current flows west by south and east by north, respectively. The maximum residual current can reach 18.9 cm·s^-1. The tidal energy flux propagates from east to west in the area, whose maximum value is about 4.8×10³ W·m ^-1.