Scientific discoveries not only make people amazed at the vastness of the universe, but also make us feel the special nature of the earth. Without the birth of the Earth’s magnetic field, perhaps life on Earth would not have survived.
The role of Earth’s magnetic field
The environment in which life on earth is born is extremely harsh. In the realm of the sky currently known, only the environment we live in meets the conditions. If the presence of liquid water and suitable temperature are the main reasons, then other factors can be seen as supplementary conditions to support biological evolution and the reproduction of life.
Undoubtedly, the earth’s magnetic field is one of them, which refers to the magnetic field distributed in the space around the earth. If the earth’s magnetic field is mentioned, the concept of the earth’s magnetic field must be introduced first.
The geomagnetic field refers to the existence of magnetism inside the earth, which can be assumed to be a large magnet. Through this magnet, the Earth’s magnetic circle extends from its left and right parts. Within the range of the magnetic coil is our magnetic field.
Since the Earth’s magnetosphere extends very far, including the atmosphere, its greatest role is to block the intrusion of the solar wind.
The solar wind is a stream of supersonic charged particles emitted from the surface of the sun. Although its density is extremely small, its intensity is extremely violent. Before modern technology was born, the influence of the solar wind on life on earth came from the various rays it carried. Although the effect of the atmosphere has been reduced, it can still have a great effect on the life of the earth, such as mutating the chromosomes of the human body, or mutating creatures, or that carrier pigeons and turtles will get lost on the earth .
The Earth’s magnetic field is the most powerful protective barrier against the solar wind. They keep the solar wind out of the magnetosphere and ensure the normal growth of life on Earth.
After the advent of modern science, the role of the earth’s magnetic field has become more obvious. People use the earth’s magnetic field to establish various communication devices. Without the existence of the Earth’s magnetic field, our civilization would be in a more backward stage.
But in 2020, European scientists said that since the Industrial Revolution, the global magnetic field strength has dropped by about 9% in two hundred years. Not only that, but near the South Atlantic, there are special circumstances.
The decrease in magnetic field strength and the flipping of magnetic poles
The decline in the strength of the Earth’s magnetic field is particularly pronounced near the South Atlantic. In the past three decades, the minimum intensity in this region has been measured to have dropped from the previous 24,000 nanoTesla to 2,000 that Tesla. Not only that, this rapidly declining abnormal area is still expanding.
Although the special situation in this area has not yet affected the world, due to the decrease in the strength of the magnetic field, more charged particles can enter the sky and come to the earth. This makes some of the satellites and spacecraft passing there fail accordingly.
So, is the weakening of the Earth’s magnetic field related to human activities? This time, humans can not be responsible, because scientists have studied that changes in magnetic field strength may actually be a precursor to magnetic pole reversal.
Speaking of magnetic pole flips, many of you must have heard of the magnetic pole shift in the North Pole. Since the discovery of the magnetic pole in the North Pole, its location has moved from northern Canada to Siberia, and has gradually continued to move in the direction of China.
An excursion from south to north has made people worry about whether the magnetic poles will flip.
By examining past rocks, scientists have found that the magnetic pole flip is a very common event. On Earth, a pole flip occurs on average every 500,000 years, and the last time the pole flipped was 760,000 years ago.
In this way, it is not impossible that Earth’s magnetic field is now flipping. One of the most important features of magnetic pole reversal is that the magnetic field strength gradually weakens until it disappears, and then slowly reappears. In this way, the phenomenon detected by European scientists may be the process of magnetic pole reversal.
So after the magnetic field disappears completely, will the earth become Mars?
The disappearance of the magnetic field will regenerate, and the earth will not become Mars
According to past history, the earth will not become a second Mars.
In their research on Mars, scientists have found that there is a high possibility that liquid water exists in the underground of Mars, and based on this, it is inferred that there may have been life on Mars many years ago.
Some people believe that the reason why Mars became what it is today is because of the lack of protection of the magnetic field. First of all, the absence of the protection of a magnetic field is indeed destructive to life. But in addition to the lack of a magnetic field, the current state of Mars is also due to the lack of protection from the atmosphere. The atmosphere can reduce the temperature difference of a celestial body, and at the same time resist the radiation from the sun, so that life can survive better.
But the earth not only has a magnetic field, but also the protection of the atmosphere, so its fate will not be as miserable as Mars, but it is not a good thing for life on earth.
When the Earth’s magnetic poles begin to flip, the Earth’s magnetic field will gradually disappear during the flipping process. This will paralyze all the communication technologies produced by modern civilization, and the creatures on the earth will mutate accordingly. Not only that, but the process is quite lengthy, taking anywhere from 5,000 to 7,000 years to complete. And once it’s done, how long it will take for the magnetic field to return to normal, we don’t know.
Once the magnetic poles do flip, it’s unclear whether humans will survive the long five-year-old period. Perhaps, under the strong radiation of the sun, new species will be born, and human beings will be changed accordingly; or, after the magnetic field is restored, new life will be born, and new species will take the place of human beings.
end
Although the strength of the earth’s magnetic field is gradually decreasing, it is still very far away from the disappearance of the magnetic field, and we do not need to worry about it. What’s more, in the detection of scientists, it is found that the strength of the magnetic field is constantly changing. Perhaps the detected change in magnetic field strength is just a normal situation.
GIPHY App Key not set. Please check settings