胶南近岸海域海流实测资料分析及数值模拟计算

基于2005年胶南近岸海域海流的周日连续观测资料,对该海域观测日期内的海流特征、潮流性质及余流特点进行了初步分析;进而在实测资料分析的基础上,利用分步杂交法对潮流场进行了数值模拟计算,展现了M2分潮的潮波系统、潮流椭圆分布、最大流速分布及逐时潮流场。数值计算结果与实测资料分析结果相一致,较好地反映出该海域M2分潮潮流场时空分布的基本特征,对该海域的水动力状况有了更进一步了解,为胶南近岸海域的环境保护规划的制定提供了一定条件下的科学依据。

An Analysis of Observed Ocean Currents Data and Numerical Simulation in the Offshore Area of Jiaonan

Based on the diurnal consecutively observed data in the offshore area of Jiaonan in 2005, the paper tries to make a preliminary analysis of the specificity of ocean currents, tidal current property and residual current property in the area in observing dates. Then on the basis of observed data analysis and by employing the split-step method, the paper conducts a numerical simulation of the tidal current field, which can show the M2 tidal constituent tidal wave system, current ellipse distribution, maximum current velocity distribution and time-dependent current field. The calculated results agree well with the observed data, which can on the one hand reflect the basic specificities of temporal and spatial distribution of the M2 tidal constituent current field to some extent, and, on the other hand, offer more information about the hydrodynamic condition. So the paper would provide a scientific basis for the making of sea environment protection plans in the offshore area of Jiaonan under certain conditions.