In this study experiments in a laboratory tank to examine the effect of bed with vegetation on the motion of gravity currents between fresh and salt water with high salinity were performed. The shape of the tank was composite (trapezoidal at the bottom and rectangular at the top). The tank was separated into two reservoirs with a vertical gate. One of the reservoirs was filled with salt water (sw) with various densities from 1050 till 1090 kg/m³. These values of densities simulates and represents the spread of liquid waste. The release of pollutants into rivers and wetlands, the spread of an oil spill into the ocean are examples of gravity currents that have detrimental environmental consequences. The second reservoir was filled with fresh water (w) and vegetation at the bed. When the gate is opened, the heavier liquid propagates towards the tank with the lightest liquid which is displaced along the free surface in the opposite direction. The results showed that the shape of the valley plays a very important role on the front velocity of gravity currents. The low water height and the presence of trapezoidal shape decreases the velocity of the gravity current. The increase of the initial height (for fresh and high salinity water) also produces gravity currents with higher velocity.

在这项研究中，在实验室水箱中进行了实验，以检查带有植被的床对淡水和高盐度咸水之间重力流运动的影响。水箱的形状是复合的（底部为梯形，顶部为矩形）。水箱被分隔成两个带有垂直闸门的水库。其中一个水库充满了不同密度的盐水 (sw)，从 1050 到 1090 kg/m ³. 这些密度值模拟并代表了液体废物的扩散。污染物排放到河流和湿地中，石油泄漏扩散到海洋中，都是重力流对环境造成不利影响的例子。第二个水库充满了淡水 (w) 和河床处的植被。当闸门打开时，较重的液体向带有最轻液体的罐传播，该液体沿自由表面以相反方向移动。结果表明，山谷的形状对重力流的前沿速度起着非常重要的作用。低水位和梯形的存在降低了重力流的速度。初始高度的增加（对于淡水和高盐度水）也会产生更高速度的重力流。