After dodging a storm of lightning, Hercules got up and ordered his troops to move on.

"Everyone, be careful, when you encounter lightning, you must lie down on the ground!" Hercules reminded his men loudly as he walked.

In this way, after they walked for a while in the center of the Flame Zone, Tianxuan suddenly stopped, opened his eyes wide and covered his mouth and coughed.

"Ahem, ahem! ……”

"What's wrong with you?" Blake saw Tianxuan stop behind and coughed, and hurriedly turned around and asked.

After Tianxuan exhaled a few breaths quickly, he half-squinted his eyes, fanned back and forth with his hand, and continued to cover his mouth, saying, "I inhaled a lot of dust in my throat, and it was extremely uncomfortable!" ”

As he spoke, his face and neck began to redden.

"You look like you're allergic!" Blake said after staring at Tianxuan.

At the same time, there were many people in the marching troops who had the same symptoms as Tianxuan. This matter aroused Hercules's great attention. When he found out about this, he immediately ordered everyone to wear blue sponge masks.

After Tian Xuan put on the mask, he suddenly felt that his breathing was much easier.

"It's so much better now!" Blake asked, smiling.

"Hmmm! This dust mask works really well. Tianxuan nodded and replied.

Then he looked around and said to Blake, "The dust in the air is so filthy, it's a bad smog!" ”

At this time, Blake, who was also wearing a sponge mask, said: "That's for sure, after the eruption, the air is filled with volcanic smoke flows, which contain a lot of dust particles, which will definitely cause some damage to the respiratory tract." ”

Tianxuan closed his eyes and complained: "I hope to leave this ghost place quickly, I don't want to stay for a minute!" ”

"Hold on a little longer! It's almost there! Blake said encouragingly.

After chatting for a while, Tianxuan looked at the colorful and dazzling clouds nearby, sighed and said, "I didn't expect this beautiful cloud to be an extremely dirty thunderstorm cloud. Looking at it, he sighed again with emotion at the spectacle in front of him, "I didn't expect that the low altitude near the crater could actually form an atmosphere!" ”

This is about to start in the past, Tianxuan learned some meteorological knowledge on the ground, and the content is recorded as follows: A thunderstorm refers to a part of the cloud with electric ions and another part of the cloud with a different charge, or a cloud with charged ions that rapidly discharges electricity between the earth. The energy of thunderstorms is very large, the electricity emitted by thunder and lightning in a few thousandths to tenths of a second can reach billions to hundreds of billions of watts, and the temperature is 10,000~20,000 °C.

Thinking of this, Tianxuan looked at the nearby volcanoes, at this time, lightning pierced the night sky, the purple light from the thunderstorm penetrated the clouds, close to the volcano, the hot lava was sprayed into the air, the billowing smoke from the volcano, an orange-red lava flowed down the hillside, and the aurora at the top of the volcano shone like a fire tree and silver flowers.

Seeing this, Tianxuan recognized in his heart: "The clouds above this volcano should be exactly the same as the smoke emitted from the chimney. These volcanic smoke streams are suspended at low altitudes and then have an electric charge effect as the eruption occurs, which triggers lightning. But the question is, no matter how it works, there must be water in the volcanic smoke flow, and where does this water come from? ”

Seeing Tianxuan looking down and thinking, with a sad look, Blake stepped forward to ask. So, Tianxuan told Blake about his doubts.

After hearing this, Blake smiled, and then explained while shaking his index finger and middle finger: "The magma from the volcanic eruption, in addition to the main component silicate, also includes water and volatile components such as carbon dioxide and sulfur dioxide. Statistics show that the water content of volcanic magma is generally about 3~6%. Don't underestimate such a water content ratio, a cubic meter density of 2.5 grams per cubic centimeter, 4% water content of magma, water content can reach 100 kilograms. At a temperature of 30°C, this water can saturate 4,000 cubic meters of tropical atmosphere. When the magma rises from the ground, the pressure decreases, and the water in the magma escapes and becomes water vapor into the volcanic smoke stream. ”

"I see!" Tianxuan looked at Blake at this time and nodded, and said, "Actually, in ordinary thunderstorms, ice crystals collide with each other to produce electric charges, which in turn produce lightning. In volcanic thunderstorms, ash particles replace ice crystals. Although the state is different, the mechanism is actually the same. ”

"Exactly!" Blake said.

"I think so! Now that we know this mechanism, we can also create this phenomenon. Tianxuan bent his eyebrows and said with a grin.

"You're right, we've put this technology into normal use." Blake said with a smile.

Hearing Blake's words, Tianxuan's eyebrows immediately raised high, and he asked curiously, "Have you put it into use?" Where is it? ”

Blake smiled and stretched out his finger to point to it and said, "It's in the streamer layer!" ”

"Oh?" Tianxuan blinked quickly and asked, "In the streamer layer, why didn't I see it?" ”

"Huh!" Blake patted Tianxuan and continued, "This is mainly used in agriculture, and this technique is not used every day. ”

"Agriculture? Can it be planted near the volcano? Tianxuan kept rolling his eyes, puzzled.

"Hmmm! That's true. Not only can it be planted, but the land is more fertile than other places, and the harvest is quite impressive. ”

"Why is that?" Tianxuan asked again.

"The volcanic eruption was harmful, but when the lava disintegrated, weeds and mosses began to emerge. Ferns grow on the slopes of the mountains where the rope-like lava flows. ”

"Oh! Ferns, such as the Flame Tongue of the Streamer! But won't these ferns be all gone after the next magma eruption? Tianxuan interjected.

Blake smiled, waved his hand, pointed to the orange vines near the magma not far away, and said, "Do you know what this is?" ”

Tianxuan looked in the direction that Black was pointing, and saw that the rocks next to the magma were crawling with orange vines, and these vines had a white knot every few moments, like pimples. After reading it, he spat and said, "What is this, it's a little disgusting to watch." ”

Blake shrugged his shoulders and told him, "It's a phoenix fern!" ”

"Anchovy fern?"

"Hmmm! That's right, the phoenix fern can still survive after the magma tides, and every time the magma passes, it can only burn its leaves, but it can't hurt the main body in the slightest. ”

"Is it that amazing?"

"Of course! We can also make anchovy ropes from anchovy ferns, which can be woven into nets to prevent high temperatures! Blake said.

"Hmmm! I understand! Tianxuan nodded, then tapped his chin with his finger and said, "This fern is not afraid of magma, but crops are okay too?" ”

"Of course the crops can't do it! Yes, because the ash is rich in nutrients that make the land more fertile, and it contains nutrients needed for many crops, such as phosphorus, potassium, calcium, zinc, and many other elements. The fruit trees planted beneath the layer of volcanic ash harvest far exceed that of ordinary land. Blake went on to explain.

"But!" At this time, Tianxuan put his hands in an upside-down V shape on his chest and asked, "Planting near the volcano, it is easy to be destroyed if it is too close, and it is too far away, so you must not be annoyed to death every time you transport volcanic ash!" ”

Blake waved his hand and said, "No, we will regularly create strong winds of force 6-7 to blow thunderstorm clouds above the crater to our planting area, and then we will also spread rainfall agent in the thunderstorm clouds, so that the cloud droplets or ice crystals will increase to a certain extent, and the precipitation will settle to the ground." ”

"High! It's really high! Tianxuan clapped his hands and praised, "In this way, this dangerous and dirty thunderstorm cloud has become a treasure!" ”

"That's true! And not only that, but in addition to agriculture, we have developed a variety of industries based on it! ”

"Oh? The industry has also been developed, so let's hear it! ”

Blake continues: "We use these smoke streams from volcanic eruptions to produce boric acid, ammonia, and sulfuric acid compounds. Not only that, but we also use the resources near the volcano to generate a lot of heat and electricity......"

Tianxuan nodded and said with emotion: "It seems that magma is the cradle of life!" ”

Blake nodded slightly, agreeing with him.

Although, the environment around the volcano is a great asset, but at this time it is a terrifying danger.

Just as more than 20,000 people crossed the center, ready to cheer, suddenly, the ground under their feet shook violently. Then the ground began to rise and fall.

"Hurry back!" Hercules shouted.

When everyone retreated to a calm area more than 100 meters later, they saw that the ground where they were just now kept rising and sinking. About ten minutes later, the scene in front of them made everyone desperate.

"Why! No, I can't! Tianxuan hugged his head and shouted.

It turned out that the ground that had been undulating before had obvious cracks and faults due to continuous compression. Immediately afterwards, a fissure erupted in the depression, and the orange magma instantly filled all the fissures, turning it into a sea of hot magma, leaving only the bulge slightly exposed to the surface of the magma like an island. What's worse is that whenever the magma bubbles up and drips on the bulging ground, a thick layer of colored smoke comes out.

The roof leak happened to rain overnight, and this untimely change in the surface instantly blocked the return of more than 20,000 people.

This article is from Reading Books and Novels