论文部分内容阅读
通过2010年春季金普湾内7个海床基连续半个月的海流资料,对金普湾春季海流进行潮流和余流分析。结果表明:(1)湾内潮流性质主要为不正规半日潮流,优势分潮流为M2。水平方向潮流能比的差异变化有由湾口向湾内逐渐减小的趋势;垂直方向上表层潮流能量比仅为中、底层潮流能量比的一半左右。M2分潮在近岸多为往复流、流向基本与岸线平行,湾内中部多为逆时针旋转流。(2)通过欧拉余流可知湾内中部海域以落潮流为主,而湾内靠陆一侧海域以涨潮流为主。斯托克斯余流明显小于欧拉余流,其方向与该站位的优势分潮潮流椭圆方向较为一致。拉格朗日余流的方向、大小基本与欧拉余流一致。湾内北侧水域水体净输移方向有较明显的顺时针旋转的特征,湾内南侧水域水体净输移方向有较弱的逆时针旋转的特征。
Based on the ocean current data of seven seabed bases in the Jinpu Bay in the spring of 2010, the current and flow analysis of the spring currents in the Jinpu Bay are carried out. The results show that: (1) The tidal current in the bay is mainly irregular half-day tidal current with M2 being the dominant tidal current. The variation in tidal current to energy ratio in the horizontal direction tends to decrease gradually from the bay mouth to the bay; the tidal current energy ratio in the vertical direction is only about half of that in the middle and bottom tidal currents. Most of the tidal currents in M2 are reciprocating flow in the near shore, the flow direction is basically parallel with the shoreline, and the central part of the bay is mostly counter-clockwise rotating flow. (2) Through the Eurasian surplus flow we can see that the central Gulf of Inland Sea is dominated by tidal currents, whereas the inner bay on the land side of the Gulf is dominated by the rising tide. The remaining Stokes flow is significantly smaller than that of the Eurasian remaining stream, and its direction is consistent with that of the dominant tidal current ellipsoid of this station. The direction of the rest of the Lagrange, the size of the Eurasian residual flow basically the same. The net water transport direction of the water in the north side of the bay has obvious clockwise rotation characteristics, and the net water transport direction in the south side of the bay has a weak counterclockwise rotation.