Lateral variability of residual flow was investigated in Maputo Bay in Mozambique, Africa. The bay is nearly rectangular with $30\times 30$ km, mean depth of 5 m. The bay mouth is $\sim$18 km wide with mean and maximum depth $\sim$10 m and 30 m, respectively. Tides ranges between 1 and 3 m at neap and spring tides, respectively. The mean annual river flow is $\sim$225 m³/s, ranging from $\sim$150 to $\sim$400 m³/s during winter and summer, respectively. Southeasterly (SE) wind are the most frequent wind during the year followed by northeasterly (NE) winds. In order to scale the relative importance of tides, wind and buoyancy effects on the residual exchange flows, we designed three-dimensional numerical experiments (Delft3D). Results show strong changes among the scenarios and between neap and spring tide conditions. During spring tide, flows becomes more vertically homogeneous and laterally sheared, modulated by the cross-section shape. Most important exchange flows were during neap tides mainly with scenarios forced by tides. There are some locations prone to entrap sediments, such as the inlet of the Incomati river and to the north of Inhaca Isle.

在非洲莫桑比克的马普托湾调查了剩余流量的横向变化。海湾几乎是长方形的$30\times 30$km，平均深度为5 m。海湾口是$〜$宽18公里，平均深度和最大深度 $〜$分别为10 m和30 m。在潮汐潮和春季潮汐时，潮汐分别在1-3 m之间。年平均河流量为$〜$225 m ³ / s，范围从$〜$150至 $〜$冬季和夏季分别为400 m ³ / s。东南风是一年中最常见的风，其次是东北风。为了衡量潮汐，风和浮力对残余交换流量的相对重要性，我们设计了三维数值实验（Delft3D）。结果表明，情景之间以及午潮和潮汐条件之间都有很大的变化。在春季潮汐期间，水流在横截面形状的调节下，在垂直方向上变得更加均匀，在横向上受到剪切。最重要的交换流量是在潮汐浪潮中，主要是潮汐推动下的情景。有一些易于沉积沉积物的位置，例如Incomati河的进口和Inhaca Isle的北部。