Scientists return to the deepest trench in the world
High-tech deepwater detectors used by scientists Photographed fish at 7700 meters deep According to a report by the BBC on January 17, an international scientific research team has discovered that there is a lot of carbon stored in the Mariana Trench in the world’s deepest trench. This means that the role of the trench in regulating the global environment is more important than previously known. It is important. Scientists sent a high-tech detection device that could withstand tremendous pressure to the 10.9-kilometer deep Mariana Trench of the Western Pacific. The explorers Jacques Picard and Don Walsh had reached this depth in 1960, but humans never returned to this mysterious waters. A few scientific expeditions, including the international team visit, were performed using underwater unmanned aerial vehicles. The University of Southern Denmark Professor Ronnie Gruder and the Scottish Marine Science Association are responsible for the scientific investigation. The research team includes scientists from Japan, Hong Kong, China and Germany. Professor Gruder said: "This is the first time we have succeeded in diving precision instruments to measure carbon content to this depth." The special sensors on the detector were installed in titanium buckets that could resist tremendous pressure. The scientists first put the detectors into the water from the ship. After three hours of free fall, it arrived at the bottom of the sea. Then the detector was based on A well-developed program executes the probing mission and releases the ballast to the surface. Professor Gruder said, “We are interested in the organic content of sediments in the trenches. These substances come from the upper algae and fishes of the ocean. When they settle on the sea floor, they are either eaten by bacteria or are decomposed or buried. By studying this process, we can understand the content of oxygen and carbon dioxide in the ocean and understand how much the ocean can play in the global carbon cycle system." Although humans have conducted similar research on other parts of the ocean, such as some submarine plains with a depth of 4.6 to 5.5 kilometers, what role deep sea trenches play in the global carbon cycle is still a mystery. Professor Gröder said: “Though these trenches only account for 2% of the ocean area, we think its importance is not consistent with this ratio because more organic matter is deposited in the trenches than in other parts of the ocean. The original data obtained from the inspection confirmed the idea of ​​Professor Gruder. He said: “The trench is like a sediment collector. The activity here is also very active. The amount of carbon that is transformed by the bacteria in the trench is deeper than 6000 meters. The high carbon content on the undersea plains shows that the carbon content in the trenches is higher than we previously thought, and we did not realize that there was such a carbon dioxide collection tank in the deep sea." The scientists’ next step is to quantify the results of the study and figure out how much more carbon in the deep-sea trenches is in the end than in other sea areas. The amount of carbon that the bacteria transforms is specific. This data can help researchers better understand the deep-sea trenches. Regulate the role of climate. Graphite crucibles have good thermal conductivity and high temperature resistance. During high-temperature use, their coefficient of thermal expansion is small, and they have certain strain resistance to rapid heating and cooling. Strong corrosion resistance to acidic and alkaline solutions, with excellent chemical stability. Graphite Crucible,Foundry Crucibles,Graphite Crucible Sizes,Graphite Crucible For Aluminum CARBONS TECH&CREATION(HENAN) INDUSTRY CO.,LTD , https://www.carbongraphitepart.com
