What is the origin of Lake Nuwak? Why is Lake Nuwok a double decker lake?

Lake Nuwak is located on Point Barrow in northern Alaska, United States. 180 meters long and 180 meters deep. The lake has two layers of water, the upper layer is fresh water and the lower layer is salt water.

The lake is clearly divided, and the dividing line is just a meter underwater. Lake Nuwak is located on Point Barrow in northern Alaska, United States. 180 meters long and 180 meters deep.

The lake has two layers of water, the upper layer is fresh water and the lower layer is salt water. The lake is clearly divided, and the dividing line is just a meter underwater.

The local Eskimos have known about this strange phenomenon in Lake Nuvok, but the reason has not been found. Now, scientists explain it this way: Lake Nuwok was originally a low-lying area, and strong winds once blew up nearby seawater, fish and shrimp into the depression.

Later, when the snow melts and flows into the lake, it suddenly encounters cold air, and the surface of the lake is frozen, blocking the wind, and it is difficult to mix the low-density fresh water above and the dense seawater below. So it becomes a peculiar double-decker lake. In any case, there is a clear boundary between the freshwater and the saline aquifer, which indicates that the water of the lake is not mixed up and down.

Due to the influence of cold Arctic air, for most of the year, Lake Nuwok is covered in snow and ice, and the freshwater layer, which is more than 2 meters thick, is frozen into a large block of ice. According to scientists, it is believed that the lake was formed as a result of the rise of the bay. To the north of it is a long and narrow strip of land, like a separating it from the sea to the north.

Due to the abundant snowfall in winter, a large amount of snow melts into this "pocket" in spring, which is a strange phenomenon in Lake Nuwak because of the cold climate on the lake.

Lake Nuwok is located in the northern part of the state of Alaska, United States. The water of this lake is divided into two layers, and the dividing line of the lake water is meters below the surface of the water. The upper layer is freshwater, and freshwater fish live in the water; The lower level is saltwater, which is inhabited by marine life.

So, why is Lake Nuwok so clearly classified? Scientists explained that the lake was originally a low-lying area, and strong winds had blown up the nearby seawater, fish and shrimp into the depression. Later, when the snow melted, it flowed into the lake, and suddenly encountered cold air, and the surface of the lake was frozen, blocking the wind, and it was difficult for the dense sea water below to mix with the less dense fresh water above.

Lake Nuwok is located in the northern part of the state of Alaska, United States. The lake has two levels: the upper layer is freshwater, where freshwater fish live; The lower layer is saltwater, which is inhabited by marine life, and the dividing line of the lake is meters below the surface of the water.

Why is Lake Nuwak so distinct? Scientists explained that Lake Nuwok was originally a low-lying area, and strong winds had blown up nearby seawater, fish and shrimp into the depression.

Later, when the snow melts and flows into the lake, it suddenly encounters cold air, and the surface of the lake is frozen, blocking the wind, and it is difficult to mix the dense fresh water above and the dense sea water below, so it becomes a peculiar double-decker lake.