哑铃湾的局地浅海锋

Local Fronts on the Shallow Sea of Yalin Bay

简要介绍了大亚湾北部哑铃湾的情况,并根据流场的数值模拟计算结果,计算了S_H值的平面分布与时间变化,经与水温等的观测值作对比后,确定了作为锋区的界定值。本文认为,哑铃湾的锋面活动具有明显的周期性是浅海局地锋的一个重要特点,而这种调整机制的形成与浅滩所接受的太阳辐射及水体的蒸发损失等的周期变化有关。

The conditions of Yalin Bay lying in the north of Daya Bay are introdu- ced briefly in this paper. The horizontal distribution and the change with time of parameter S_H are obtained according to the results of tidal current numerical mod- eling. Comparing with the water temperature and other observed elements, the value of S_H of the front boundary can be determined. We believe that the perio- dic frontal movement in Yalin Bay is an important character of local fronts in shallow water. The formation of this adjustment mechanism are relative to the periodic change of solar radiation received by the shallow and evaporation from water surface.