What is the deepest trench on earth?

The deepest place on earth is the Mariana Trench.

Mariana Trench is located at the bottom of the Pacific Ocean near Mariana Islands in the northeast of the Philippines, starting from Iojima in the north and near Yap Island in the southwest. Its maximum depth is 1 1034 meters, which is the deepest known ocean. It is characterized by high water pressure, complete darkness, low temperature, low oxygen content and lack of food resources, so it has become one of the worst environments on earth.

It is generally believed that the ocean plate collided with the continental plate, and because of the high rock density and low position of the ocean plate, it dived under the continental plate and gradually melted and disappeared after entering the mantle. Trenches will be formed where collisions occur, and island arcs, back-arc basins and coastal mountains will often be formed near the mainland. These places are areas with strong geological activities, and volcanic eruptions and earthquakes often occur.

ocean resources

In 201110, an international scientific research team found that the Mariana Trench stored a lot of carbon, which means that the trench plays a more important role in regulating the earth's environment than previously known. The Mariana Trench is like a sediment collector, and the amount of carbon transformed by bacteria in the trench is higher than that in the submarine plain at a depth of 6000 meters.

This shows that the carbon content in the trench is higher than previously thought by researchers. They didn't realize that there was such a carbon dioxide collection tank in the deep sea. The scientists' next idea is to quantify the research results and calculate how much more carbon is in the deep-sea trench than in other sea areas, and how much carbon is transformed by bacteria. These data can help researchers better understand the role of deep-sea trenches in regulating climate.

Baidu Encyclopedia-Mariana Trench