April 15 A photo taken by an astronaut from the International Space Station of Lake Van in eastern Turkey topped NASA’s “2021 Earth Championship” online poll, the Central News Agency reported. The azure vortex and deep blue lake water recorded in this photograph give people infinite imagination in a quiet space.
Nasa’s Earth Observatory reportedly said that in the spring and autumn seasons, plankton and aquatic plants increased, producing large amounts of organic carbon. From a bird’s-eye view of space, the lake seems to have appeared a few turbid plumes that look like vortexes, intoxicating.
U.S. astronaut Kate Rubins takes a photo of Lake Van from the International Space Station on September 12, 2016, in a vote on NASA’s 2021 Earth Championships online.
The 2021 Earth Championships, which selected 32 photos in four categories, opened online voting on March 8 and, after 930,000 people participated in five rounds of voting, beat another photo taken in 2012 over South America and the South Atlantic, “Stars in Motion,” by taking the first place in the “Quiet” category.
NASA Earth Observatory said that the inland lake Fan Lake is the world’s largest alkali lake, no exit, the lake water will disappear due to evaporation, its pH of 10, with high salinity.
Lake Van, near the city of Ercis, is shallow, but the rest is up to 450 metres deep. Climate change, volcanic eruptions and tectonic activity have led to a decline in the lake over the past 600,000 years.
Alkaline lakes usually contain high concentrations of carbonates. Including the photos of those “vortex” and dark blue lake water mainly contain calcium carbonate, debris and some organic matter.