![]() The researchers found that if the rate of evaporation is sufficiently high, i.e. If any water reaches and rises above the surface, it evaporates to leave more salt behind.So just under the surface, the groundwater is highly saline and denser than the groundwater further below. The surface of a salt flat has a layer of salt that has been deposited over time.That is, if the topmost layer is removed and looked directly down at the soil that the salty groundwater is flowing deeper into the soil along vertical sheets, not throughout is visible.The researchers found that the salt penetrated deeper into the soil exactly below the ridges, and remained shallow under the flat areas.The researchers began with the hypothesis that the salt on the surface is influenced by the salt flowing through the soil below.The underlying soil is highly saline: even if the water table is shallow, the groundwater is too salty for humans to drink. They reflect sunlight strongly and thus appear bright.Over time, all the water evaporates, leaving behind the dissolved minerals, usually salts. A salt flat forms from a natural water body whose recharge rate is lower than the evaporation rate. ![]() It is the largest in the world of its kind, and also contains more than half of the planet’s lithium reserves. Perhaps the world’s most well-known salt flat is the Salar de Uyuni in Bolivia.A salt flat is a natural landscape in which a large area of flat land is covered by salt.It is important to know the underlying mechanism because salt flats have significant effects on both humans and the climate. Using a combination of ground sampling and computer models, they have pointed their fingers at the way salt flows up and down in the soil below this formation. ![]() Salt flats around the world are covered in a similar pattern of ridgesĬontext: In a new study, researchers from Austria, Germany, and the U.K. ![]()
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