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Chinese scientists find 46 lakes under Antarctic ice
A team of Chinese scientists has discovered 46 subglacial lakes under the Antarctic ice sheet using a new analysis method that improves the accuracy of the search, local media reported today.
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Mundo Antártica
"The study of subglacial lakes in Antarctica is of great importance to understanding ice sheet dynamics, sedimentary processes, subglacial geochemical cycles, and the evolution of life," explained the expert from the Polar Research Institute of China (PRIC), Tang Xueyuan, quoted by the official Xinhua agency.
Antarctica is covered by an ice sheet with an average thickness of more than 2,400 meters, and beneath it there are numerous lakes formed when water from the ice filters through depressions in the bedrock on which the plate rests.
The new method used by Chinese researchers uses an encoder to analyze the characteristics of the reflection of the bottom of the ice sheet, a reflection whose data is previously collected by radar.
In this way, the team was able to analyze radar images in the AGAP-S region, in eastern Antarctica, and detected 46 lakes characterized by smaller geometric contours than those previously identified by conventional methods.
This research was conducted by experts from PRIC, Wuhan University of Geosciences and Southern University of Science and Technology.
To date, 675 subglacial lakes have been detected under the Antarctic ice sheet, of which only three have been excavated for sample collection.
China began its scientific expeditions to Antarctica in 1984 and has developed a series of research projects on the environment, natural resources and biodiversity of the white continent.
In February, the Asian country completed the construction of its fifth research station in the region, located on the coast of the Ross Sea and which will also be the third to operate throughout the year, along with the Changcheng and Zhongshan bases.
Read Also: Thousands of Antarctic penguins will have died after an outbreak of bird flu (Portuguese version)
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