The power of a volcanic eruption is very great. It can make the ground and sea within dozens of miles shake violently, making people feel the powerful force of nature.
The principle of volcanic eruption is a manifestation of the movement of the earth's crust. The earth's interior is very hot. Once this heat meets the weak part of the earth's crust, it will melt and shatter the rock in the weak part, thus ejecting the hot liquid inside.
The hot liquid ejected is volcanic magma, which is also a kind of melted rock material. After cooling, it will become something like a rock.
Volcanic eruptions are divided into many types according to the manifestation. There are fissure eruptions and central eruptions. Among them, central eruptions have many types. There are tranquil eruptions, explosive eruptions, intermediate eruptions, and so on. There are nearly ten types of eruptions.
Magma overflows along the huge fissure of the earth's crust, which is the so-called fissure eruption. This type of eruption is very calm, and there are no strong explosive phenomena. The material ejected is mostly basic magma. After condensation, it often forms a lava platform that covers a wide area. This type of eruption is mostly seen at the bottom of the ocean and is one of the reasons for the expansion of the sea floor.
Tranquil eruption is a large amount of hot magma that calmly overflows little by little from the volcanic crater and flows slowly along the hillside. The magma is high in temperature, low in viscosity, easy to flow, and there are no explosive phenomena. It is also a volcano that people can enjoy to their heart's content. As long as you are not too close to the volcanic crater, there will be no danger.
Explosive eruptions are more dangerous. This type of eruption is accompanied by violent protection. The magma is ejected from the volcanic crater in an explosive manner. It is very powerful and affects a very wide area. It is likely to cause extremely heavy casualties.
In history, there were many disasters related to volcanic eruptions. They were all caused by explosive eruptions. It could be said that this kind of volcano was the kind of volcano that humans hated the most. Once they encountered such a volcanic eruption, it would be fine if they were far away, but if they were very close, they would suffer.
Of course, these are all child's play. There are more powerful volcanic eruptions such as Plinian, My Son Kata, and so on. There are even Super Plinian eruptions that can eject magma 45 kilometers high.
These eruptions are named after the names of people. They are relatively powerful and have a very wide impact. For example, Super Plinian eruptions, the volcanic ash it ejects can cover the entire earth.
In addition, there were also active volcanoes that erupted intermittently and repeatedly, which had a great impact on human production and life.
The volcanic eruption was a double-edged sword. It was a threat to mankind, but at the same time, it was also beneficial to mankind.
The danger of a volcano was naturally pollution and destruction. After an eruption, a large amount of volcanic ash and volcanic gas would enter the atmosphere, causing a great impact on the climate. Under such circumstances, the dark days, violent storms, and even muddy rain would trouble the local residents for months.
When volcanic ash and gas were ejected into the high school, they would be scattered far away by the wind. A large amount of volcanic ash would block the sunlight and cause the surface temperature to drop. This would threaten the growth and normal lives of animals and plants. At the same time, it would also seriously interfere with the lives of humans.
After a large amount of volcanic ash and heavy rain combined, it could also form a terrifying mudslide that would destroy roads and bridges, drown villages and cities, and make countless people homeless.
Of course, volcanic eruptions also had a huge benefit. The volcanic ash itself was rich in nutrients. When the agricultural land was covered by a thick layer of volcanic ash, it would become much more fertile than before, and the harvest of crops would increase exponentially.
It was precisely because of the benefits of volcanoes that many residents were unwilling to leave areas where volcanoes often erupted, even at the risk of their lives. This was because living near volcanoes could get more fertile land. Every time a volcano erupted, their land would be fertilized. Every year, the harvest of crops would be very high, and their living standards would naturally improve.
Therefore, the people living near volcanoes both loved and hated volcanic eruptions. They loved them because volcanic ash could provide rich nutrients for crops, and they hated them because they often took away people's lives and caused many people to lose their loved ones.
There were many volcanoes in Heling Country. The local people's feelings for volcanoes were the same as the people of Hua Xia's feelings for the Yellow River. The volcanic ash raised the people of Heling Country, but it also made them suffer. Similarly, the Yellow River also raised the excellent children of Hua Xia, but its frequent floods also caused great disasters to the people.
Therefore, the Tang Dynasty and Heling Country still had a lot in common. The imperial courts and the people of the two countries would definitely become very good friends. There was no doubt about this.
At this moment, the huge fleet led by Ang Lee had arrived at the right time. They actually caught up with a volcanic eruption in Heling Country. This opened the eyes of many soldiers of the Tang Dynasty, who had never seen a volcanic eruption in their lives.
The huge explosion completely shocked many soldiers of the Tang Dynasty. After all, the Tang Empire was a stable area, and volcanic eruptions rarely occurred. It was normal that the soldiers of the Tang Dynasty had never seen a volcanic eruption before.
"Rumble …"
The volcano continued to make huge explosions and ejected fiery red magma, illuminating the entire sea. In addition, the huge vibration made the soldiers of the Tang Dynasty deeply feel the violent tremors in the distance.
"Big Brother, what's going on in Heling Country?"
Li Feiyu had never seen or heard of a volcano. When he saw a powerful volcano, he was immediately frightened and didn't know what he was seeing.
Ang Lee whispered, "It's okay. This is a volcanic eruption. In Heling Country, there are many volcanoes, and they will erupt from time to time. Just like the Yellow River in my Tang Dynasty. Doesn't it often burst its banks?"
"Volcanic eruption? Just like the Yellow River bursting its banks? Big Brother, I still don't understand. The Yellow River bursting its banks is easy to explain. It's just that there is too much water in the river and the banks are broken. But what's with this volcanic eruption? What's with the red water? "
Li Feiyu asked with a puzzled look.
Ang Lee smiled and whispered, "Fei Yu, this red liquid is the melting of stones, just like boiling water. When it boils, it will spray out from the pot. Do you understand?"
Ang Lee knew that he couldn't explain this kind of science according to the actual situation, because Li Feiyu couldn't understand it at all. It was a good choice to give a more vivid example.
"Big Brother, do you mean that there are many furnaces at the bottom of the mountain in the distance? They are constantly burning stones. Once they are boiled, they will spew out the fire. But with such great power, to melt so many stones, how much firewood would they need? Why did the people of Heling Country do this? "
Li Feiyu was completely dumbfounded and made a mistake in understanding.
"Firewood? You're wrong. It's earth fire. There is earth fire under Heling Country. It's earth fire that melts the underground rocks. After it boils, it erupts. It's that simple."
Ang Lee smiled and said.
"Earth fire? Yes, yes, yes, this explanation is much more reasonable. Fortunately, there is no such earth fire in the Tang Dynasty. Otherwise, who can stand it if it erupts so often? "
Li Feiyu expressed his relief.
At this time, all the soldiers of the Tang Dynasty fleet gathered on the deck to watch the volcanic eruption. Even the soldiers who had fallen asleep were awakened by the loud volcanic activity and curiously ran to the deck to watch the volcanic eruption.
The soldiers of the Tang Dynasty were all curious. It was the first time in their lives that they had seen a volcanic eruption. Naturally, they couldn't miss such a good opportunity. Moreover, they were whispering to each other and discussing what they had seen. Some were excited, some were frightened, and some even wet their pants.
In order to prevent rumors, Ang Lee immediately issued an order to inform all the soldiers of the volcanic eruption, so that no one could make wild guesses and create artificial panic.
"Assistant Minister Li has already given the order. All the soldiers will know about the volcanic eruption in the shortest time. It will not cause panic."
One of his subordinates said.
Ang Lee nodded and sighed. "The volcanic eruption is very violent. I don't know how many people will die!"
"Assistant Minister Li, are there local people living at the foot of the volcano? Don't they know the danger? "
One of his subordinates said.
Ang Lee looked at him and said, "If I remember correctly, your hometown is next to the Yellow River. How dangerous it is! Why don't you leave there? "
"Yes, Assistant Minister Li. I understand. It's hard to leave my hometown."
Ang Lee picked up the telescope and carefully observed the volcanic crater in the distance. He was shocked by the powerful volcano and worried about the local people. He didn't know if they had fled their homes.
"Assistant Minister Li, is there any sign of the volcanic eruption? If there is no sign, the nearby people will suffer!"
One of his subordinates said.
Ang Lee thought for a moment and said, "There are naturally signs. Volcanoes are similar to earthquakes. Before an eruption, there will be some very special signs. For example, the well water will become turbid, the spring will emit a strange smell, the water level and temperature of the river will change, and small animals will behave strangely. Plants will fade and wither, and small animals will behave strangely and die."
Thinking of this, Ang Lee couldn't help but worry for the local people around the volcano. If these people already knew about this, then it was fine. If they didn't, then the casualties would be disastrous.
"The local people have lived here for generations. I'm sure they know when the volcano will erupt. They will make emergency preparations."
The subordinate casually said.
Ang Lee nodded and said, "Yes, the local people know a lot about volcanoes, so there shouldn't be too many casualties. But our soldiers don't know much about volcanoes. We must let them know the power of volcanoes and how to protect themselves when they encounter one."
This concern was not unreasonable. Now that the fleet had arrived in Zha Ling Country, there were many volcanoes in Zha Ling Country. Maybe there would be an eruption at any time. If the Tang Army soldiers were not fully prepared, it would be terrible.
Ang Lee was worried that the Tang Army would suddenly encounter a volcanic eruption after landing in Zha Ling Country. Therefore, these soldiers must be warned about the danger of volcanic eruptions, how to avoid volcanic eruptions, how to protect themselves, and so on.
The ultimate goal of protection was nothing more than to resist the hot lava and avoid inhaling the poisonous volcanic gases. These were the two most important things, especially the latter. They had to be paid enough attention to. Otherwise, they wouldn't even know what had happened if they were poisoned to death by the gases.
If they encountered a volcanic eruption at close range, they must immediately protect their heads with their hands to prevent the splashing volcanic debris from hitting their heads. It would be best if they had helmets.
After the eruption, the lava would flow from high to low until it reached the lowest point or finally cooled down. Everything in the lava's path would be destroyed. However, among the various dangers of volcanoes, the lava flow was the least life-threatening, because the flow path of the lava could be seen. As long as they avoided it quickly, they would be fine.
The more dangerous ones were the Lava Bombs. These bombs would fly in all directions with the eruption of the volcano. Once they hit a person's head, it would cause great damage. Therefore, when the volcano erupted, it was best to protect one's head and find a safe place to hide.
The range of volcanic ash was so large that it could even cover the whole world. It was the most widespread type of volcanic ash after a volcanic eruption. If a super-large volcano continued to erupt, the huge amount of volcanic ash produced could even cover the entire Earth's sunlight, so that plants could not receive photosynthesis and would wither and die. Once plants died on a large scale, herbivores would also disappear in large numbers. In the end, animals would perish. This would be very terrible. Once this happened, human civilization would also come to an end.
Of course, a large-scale volcanic eruption that could destroy human civilization should not occur under normal circumstances. Ordinary volcanic eruptions would not have much energy, so there was no need to worry about the end of the world.
The range of volcanic ash should be at least dozens of miles. It would cause a certain degree of harm to the nearby people, causing them to get sick or even die.
This was because volcanic ash was composed of tiny volcanic fragments, rocks, minerals, and volcanic glass fragments. It was very irritating and would be accompanied by toxic gases, which would cause serious damage to people's lungs, especially children, the elderly, and people with respiratory diseases. They were more susceptible to harm.
Healthy people had stronger resistance. As long as they were not too close to the volcanic eruption and the concentration of poisonous gases was not high enough, they would not be hurt.
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