Evidence for the existence of 'liquid lake made by liquid water' on Mars

The evidence of the existence of liquid water in the basement of Mars aiming for the next place of residence was revealed by the analysis of the Italian research team. It has been discovered that water ice is present on Mars, but if it is true that the presence of liquid water is a groundbreaking discovery.

Mars may have a lake of liquid water | Science News
https://www.sciencenews.org/article/mars-may-have-lake-liquid-water-search-life

This research was conducted by researchers such as Roberto Orosei of the Italian National Aerospace Laboratory. The team analyzed the data obtained from the radar of the European Space Agency (ESA) explorer " Mars Express " that is orbiting Mars, and the results are published on the Science magazine "Science" on 25th July 2018 Announced.

Based on the results of the analysis, the research team announced that they have grasped the evidence that there is a "liquid lake" of about 20 kilometers in diameter, about 1.5 km below the ice on the Martian Antarctic. Although the temperature of the part where water is supposed to exist is around freezing point of 70 degrees, the high pressure is applied by the thick ice on top, and because the concentration of salt is high, the water is in a liquid state It is considered to exist.

The possibility that liquid water exists on Mars has been pointed out so far. In 2015, NASA's research institute analyzed the underground data sent from Mars Science Laboratory (nicknamed "Curio City") to show the view that liquid water is present It was.

Finally a study showing a high possibility that "liquid water" exists on Mars will be announced - GIGAZINE

Mr. Orosei conducted analysis based on observation data for 3 years and 29 times obtained by the observation device "MARSIS" installed in Mars Express. When the radar wave passes through the ice, the radio wave reflected by the component contained in it changes. At this time, the liquid water will appear brighter than ice and rock. The following image is a published analysis result, showing triangular areas that are seen as a water lake.

The diameter of the lake discovered this time is surely 20 km, but it is said that the depth has not been disclosed. However, according to Mr. Orosei, MARSIS needs to have at least a water depth of at least 10 cm in order to obtain this data, in which case the amount of water that this lake pays is over 10 billion liters It is that.

In Mars, it is thought that it was a planet with a large amount of water, such as the discovery of the topography showing traces of water flowing up to now. The announcement of this analytical data seems to greatly advance discussion about the existence of Mars water.