الوضع الليلي
3:31:28 
2022-10-21 
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Satellite image of Lake Shala (blue), Lake Abigata (green), and Lake Langano (yellow) in Ethiopia. The stunning image was captured by the Landsat satellite.
Three of Ethiopia's lakes, each a different color from the other, can be seen in stunning detail in a satellite image recently released by NASA. The unusual colors are the result of several factors, including water chemistry, depth and wildlife.
The three lakes are Lake Shala, which is dark blue in color. Lake Abigata which is green in color. and Lake Langano, which has a grayish-yellow shade similar to the surrounding land.
The lakes are located in Ethiopia's Great Rift Valley, about 124 miles (200 km) south of the capital, Addis Ababa.
Lake Shala, which is about 7.5 miles (12 km) long and 17.4 miles (28 km) wide at its widest point, is the deepest of the three lakes, with a maximum depth of 873 feet (266 metres), making the water appear dark blue from the top . The lake has numerous holes at its bottom that pump sulfur into the water, which means it has a very high pH. Despite the harsh conditions, the lake contains a large population of small crustaceans and microorganisms that support large flocks of visiting flamingos and swans, according to the Earth Observatory.
Lake Abigata, which is about 10.6 miles (17 km) long and 9.3 miles (15 km) wide, is the weakest of the three lakes, with a maximum depth of 46 feet (14 m). As a result, Abigata is the most picture-changing lake; During the past 50 years, the lake has lost about a third of its area, the green color of Lake Abigata is most likely due to the flourishing of phytoplankton on its surface.
Lake Langano, which is about 11.2 miles (18 km) long and 9.9 miles (16 km) wide, is mostly fed by eastbound currents. The lake's yellow color comes from brown sediments carried by rivers that feed it from nearby mountains. Langano is a popular destination for beachgoers because it is the only lake in the area not inhabited by parasitic worms that transmit a deadly disease known as schistosomiasis, according to the Earth Observatory.
(Note: The three lakes were part of the same ancient body of water.)
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