The Japanese submarine went 10,000 meters deep into the seabed and caught a group of things, which sounded the alarm for mankind.

Speaking of the earth, I believe everyone is familiar with it. According to the distance from the sun, the earth is the third farthest planet from the sun. From the appearance, the earth is composed of mostly blue and a few other colors, because most of the earth is ocean, and the oceans on the earth are mainly divided into four regions.

How much do you know about the earth?

It is true that water is the source of life, from which we can see that the ocean is of vital importance to human beings. I believe everyone knows that the ocean is rich in natural resources. With the increasing demand for energy and the continuous depletion of land resources, it is urgent to explore and develop the ocean. Until today, people's exploitation of the ocean continues. According to the energy demand, people have developed technologies such as seawater desalination, seabed combustible ice and tidal energy.

Energy development and marine exploration

However, in order to further develop seabed energy, seabed exploration must be carried out. In order to develop marine energy, it is necessary to carry out submarine exploration, and the steps required for submarine exploration include sampling and underwater construction. According to the results of marine exploration by the technology currently mastered by human beings, there are more than 30 places with an ocean depth of more than 6,000 meters, and the deepest of these 30 places is the Mariana Trench.

This is just the tip of the iceberg of the ocean that accounts for 765,438+0% of the earth's surface area. The ocean area is too large, and the existing technology is not enough to explore all the 360 million square kilometers of ocean, so people look to the Mariana Trench, the deepest trench in the world.

What did we find when we explored the deep sea of 10,000 meters?

The Mariana Trench is located near the Mariana Islands in the northeastern Philippines. The trench is 2550 kilometers long and curved, with an average width of 70 kilometers. According to scientists' preliminary estimation, this trench was formed at least 60 million years ago, and its deepest point is 6~ 1 1 km. This is a place with high water pressure, darkness, low oxygen content and lack of physical resources, so it is called one of the worst places on earth.

However, it is one of the regions with the worst environment on earth, which has long attracted human beings to explore its mystery.

Since19th century, human beings have been exploring the secrets of Mariana Trench. 1899, the depth of Donglang Trench in Guam is 9660 meters. This record has been maintained for nearly 30 years, and it was changed again in 1929. This time, the depth was 9824 meters, and the Royal Navy successfully measured it in 195 1 with the help of echo positioning. With 1960, the American submarine Trieste sneaked into the Mariana Trench to show people the mysterious creatures in the trench, and countries began to develop their own related technologies in this field.

The underwater scene is not optimistic

In 2008, the "Mariana" deep-sea submarine jointly developed by Japan and the United States adopted more advanced shooting technology, which further revealed the true meaning of deep-sea species living in the trench after the "Trieste" submarine. At the depth of 10,000 meters, the pressure of seawater is equivalent to 1000 atmospheric pressure, so these deep-sea creatures become flat in order to adapt to such an environment, with normal fish eyes on both sides. However, in such a deep sea, it is strange that fish eyes grow behind the head, but the most unexpected and creepy thing is that there are piles of garbage at the bottom of the sea.

The submarine brought back hooked shrimp from Mariana Trench, and found traces of nuclear explosion carbon 14 on it. After this exploration of the Mariana Trench, the results show that human pollution to the environment seems to have affected one of the most serious areas on earth. With global warming, ocean currents will stop at extremely high temperatures. However, once the ocean current stops, the ocean will be deprived of oxygen, and once the ocean is deprived of oxygen, the earth will face another round of species extinction.

abstract

Although the ocean will be restored to its original state through self-purification environment, the self-purification of the ocean is limited, and it will still be polluted if it exceeds the carrying limit. The earth is our common home, and protecting the ocean means protecting our home. Stop overusing the ocean, such as overfishing and discarding fishing gear at will. It is also a contribution to the sustainable development of mankind.

References:

General geology and marine engineering environment