According to a new study, the rotation of the earth promotes mixing of water on beautiful Lake Garda Italy.
Ventilation and mixing of water are very important for the lake ecosystem. The new study, published this week in the journal Scientific Report, shows that the Earth’s rotation helps mix water in long, narrow lakes such as Lake Garda.
Scientists in the Netherlands and Italy are working together to develop a series of sophisticated hydrodynamic models. Simulation of the movement of water on Lake Garda found a unique interaction between local wind patterns and the power of rotation.
In the spring and early summer, when the ice melts and sinks to the bottom and upper layers of the lake, the lake quickly warms up thermally, preventing the even distribution of oxygen and nutrients.
Wind and waves mix with fuel, which helps distribute nutrients and oxygen that support the freshwater food chain.
“According to our research, when the wind blows along the main axis of Lake Garda, the rotation of the earth causes secondary circulation, which moves water from side to side,” Marina Amadori, an environmental engineer and researcher at Trento University in Italy, said in a press release.
This phenomenon produces a temperature difference between the east and west coasts of Lake Garda, which pushes the water column to life.
“In the case of Foyn winds, cold surface water rises in the eastern part of the lake and warm water moves on the west side,” said Sebastiano Pikkoloaz, a researcher at Utrecht University in the Netherlands.
“Between February and April, especially when the water temperature in the lake is the lowest, vertical movements can even reach the bottom of the lake, which is at a depth of 350 m. Do not expect to see on Lake Garda programs typical of coastal seas and large lakes,” he said.