Thursday , April 22 2021

The illusion of water: Scientists have discovered that the Martian satellites "missed"





                                
                                
                                
                                Иллюзия воды: ученые обнаружили, что марсианский спутник

90% of the shots Orbiter the Mars Reconnaissance Orbiter showed what really is there.

Researchers have found that some of the pixels 90% of the photos taken by the Mars Reconnaissance Orbiter show what is really there. The error was calculated after finding the best signs of moisture absorbing materials on the surface of Mars. They were not just a Mirage: now scientists have serious doubts about the exact distribution of water on the planet.

The Compact Recognition Image Spectrometer of the tool for Mars, mounted on a satellite, is the "eye in the sky" that will identify the minerals on the surface of the planet and the places of water accumulation. The procedure is performed by measuring infrared and visible light, corresponding to different chemical structures, and then the data is distributed to pixels representing an area of ​​100 to 200 meters in diameter.

Pixels exhibiting minerals such as alunite, kerosene, serpentine, and perchlorate, probably a manufactured filter that responds to various peaks in the data, will inevitably occur when switching sensors between areas of intense light and shade. A team of researchers wanted to explore the possible distribution of perchlorate salts, which required a fine tuning of the filtering process using the new algorithm. In the end, they found that approximately 0.05% of the pixels softened the peaks to look perchlorate.


                                
                                
                                
                                Иллюзия воды: ученые обнаружили, что марсианский спутник

Fortunately, in the case of most of the slightly stained mineral image problem. After inspecting the same areas using other tools, scientists have found that the minerals are mostly in their places. But as for perchlorate – only a small part was real. It can become a serious problem.

The Martian atmosphere is very cold and fine so the water on the surface existed in a liquid form. But as a mixture with the perchlorate salts of their melting point may be low enough that a small amount of liquid remains. Anyway, in theory.

After discovering that the problem in CRISM will determine exactly where the surface of Mars has perchlorate. Since we are talking about only a few pixels damage, the existing maps are blurred, but not useless. In addition, the data received from the CRISM instrument, you can adjust using other tools.

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