The recent eruption of submarine volcanoes in the island nation of Tonga, located in the heart of the South Pacific, has attracted global attention. After the great eruption, as the eruption gushed out, large amounts of volcanic ash were scattered everywhere, and the image was clearly visible in the satellite imagery of space. Satellites from many countries captured this shocking scene.
According to current data, the maximum level of volcanic eruptions is 5, and it is also possible to reach 6. So you may not have any concept, this level is equivalent to the energy released by the 8.7 earthquake, if it comes to volcanic eruption level 6, it is equivalent to the energy released by the 9.3 earthquake, and the Wenchuan earthquake on the mainland is 8.0 magnitude. Comparing the two, there is no doubt that this time the Tangjia submarine volcano eruption level is very high.
Due to the very high level of volcanic eruptions. At present, many countries have issued tsunami warnings in response to tsunami attacks caused by volcanic eruptions. The natural barrier formed by the outer islands of the mainland can consume most of the energy of the tsunami, hindering the propulsion of the waves, so that the maximum value of the tsunami waves reaching the mainland coast is about 20 centimeters, and the tsunami amplitude of other tidal stations is less than 15 centimeters, which does not have a catastrophic impact on the mainland coast. Over time, countries around the world have lifted tsunami warnings. However, volcanic eruptions do not mean the end, and their impact on the local area is immeasurable. Even the editor feels that the tragedy has just begun.
Xiaobian believes that volcanic eruptions, one is the harm caused by high temperature magma to people, and the other is the volcanic ash that erupts with volcanic eruptions. Volcanic ash spreads extremely quickly, potentially exceeding 100 km/h and at temperatures of 400 degrees Celsius. These high-temperature volcanic ash can be said to be the deadly killers of human beings.
Pompeii, I believe everyone knows a little bit, an ancient Roman city completely engulfed by volcanic eruptions. When analyzing the human remains of Pompeii, there was a human skull that was cracked because the magma temperature was too high, and there was a lot of black material in it. It is said that the temperature here was very high at that time, making the brain boil, causing the skull to explode and volcanic ash to enter the skull and dye it black. It seems scary to us, but scientists say people at the time may have died before they felt it, or even before they realized it.
Pompeii, which was previously destroyed by Mount Vesuvius, also had a level of eruption of 5, the same level of eruption compared to the two. So this means that the impact of high temperature volcanic ash on the local area cannot be ignored. Fortunately, the site of the tonga volcanic eruption is located on the ocean, and there is no one living around, unlike Pompeii next to the volcano, which is greatly affected. However, with the eruption of the Tonga volcano, because the local ash spreads in the surrounding air, the local air quality will decline rapidly, and the substances in the air that are harmful to the human body will rise. Especially for patients with respiratory diseases, there will be very big hidden dangers, and the respiratory tract of normal people will also be affected.