Bringing the Supermarket to the Apocalypse Chapter 497: apocalypse tide

The three moons in the sky have begun to gather, and the three of them will soon be connected in a straight line. At that time, the sea of ​​death in apocalypse will have a big tide, enough to submerge the tide of the dead world.

When the three moons are connected in a straight line, the gravitational effect of the moon on apocalypse is greater, which also causes the apocalypse ’s sea of ​​death to fluctuate, forming a tide that is sufficient to drown the world of death.

The seawater has a periodic fluctuation phenomenon: at a certain time, the seawater pushes up and rises rapidly. After some time, the rising seawater recedes on its own, leaving a sandy beach with low tide. This cycle repeats and never stops. This movement of sea water is called tides. "Tide" refers to the rise of sea water during the day, "Ti" refers to the rise of sea water at night, but usually we often call both tide and tidal "tide".

Tides are mainly determined by the tidal forces of the moon and the sun. Although the mass of the moon is higher than that of the sun, its tidal force is about 217 times higher than that of the sun. Whenever the moon moves on a straight line with the sun, the tide force of the two celestial bodies will act in the same direction, and the fluctuation of the sea water will inevitably increase. This is the reason why people often say "the rising tide on the first and the fifteenth days of the first day." The astronomical tide is a normal astronomical tide phenomenon, and its period is 186 years, which can be forecast several years in advance. The astronomical tide will not cause disasters under normal circumstances, and it will cause water damage in certain specific environments. For example, when the river is full during the flood season, the astronomical tide will be difficult to retreat if the astronomical tide is supported by the top support. If the water level of the river is low, the upstream range of the ocean tide will be expanded, and the degree of salt damage will increase.

The periodic changes produced by the elements of the atmosphere due to the effect of tidal forces are called atmospheric tides, or simply gas tides. Among them, the atmospheric tide caused by the sun is called solar tide, and the lunar tide caused by the moon. Since the moon is closer to the earth than the sun, the ratio of the tidal force of the moon and the sun is 11: 5. For the ocean, the lunar tide is more significant than the solar tide. The motive forces of the earth tide, sea tide and air tide are all caused by the difference in the gravitational forces of the sun and the moon on various parts of the earth, and the three influence each other.

The elastic and plastic tidal deformation of the oceanic crust at the bottom of the ocean will cause the corresponding ocean tide, that is, for the ocean tide, there is the effect of the earth tide effect and the migration of seawater quality caused by the ocean tide changes the load on the earth's crust and causes the earth's crust Reversible variation. The gas tide is above the ocean tide, and it acts on the sea surface to cause its additional vibration, making the change of the ocean tide more complicated. As a complete tidal science, its research object should take ground tide, sea tide and air tide as a unified whole, but because the sea tide phenomenon is very obvious and is closely related to people's lives, economic activities, transportation, etc., it is customary to use tides The term narrowly understood as ocean tide.

The tide is mainly determined by the tidal forces of the moon and the sun, especially the tidal forces of the moon. Although the mass of the moon is higher than that of the sun, its tidal force is about 217 times higher than that of the sun. As the relative positions of the earth, moon and sun change periodically, the action of this force also changes periodically. Whenever the moon moves on a straight line with the sun, the tide force of the two celestial bodies will act in the same direction, and the fluctuation of the sea water will inevitably increase. As a result, this periodic tidal phenomenon appeared in front of people, which is why people often say "high tide on the first and the fifteenth day."

Although the sun is relatively far away from the earth, the gravitational effect on seawater is relatively mainly due to the gravitational effect of the moon, but the gravitational force of the sun can still strengthen or weaken the gravitational effect of the moon on the earth. Wang Hongxin, director of the Provincial Ocean Monitoring and Forecasting Center, said that when the sun, earth and moon are in the same direction around the first and fifteenth of each month of the lunar calendar, the gravitational force of the sun will play a role in boosting the momentum and making the sun and earth more powerful. When the moon is at a right angle, the gravity of the moon will be weakened, forming a "little tide."

The astronomical tide will not cause disasters under normal circumstances, and it will cause water damage in certain specific environments. For example, when the river is full during the flood season, the astronomical tide will be difficult to retreat due to the astronomical tide roof support. If the water level of the storm surge is low, the upstream range of the ocean tide is expanded, and the degree of salt damage is increased, a salt tide is formed. If an astronomical tide encounters a storm surge before and after a typhoon makes landfall, storm surge refers to a marine disaster that occurs near the shore. It is a phenomenon in which strong weather systems such as strong winds or sudden changes in air pressure act on the sea surface to cause the water level to rise and fall rapidly, often causing harm to coastal areas. Storm surge disasters rank first in marine disasters. Most of the world ’s most severe coastal disasters caused by severe storms are caused by storm surges.

The apocalypse sea tide of death has been called a wonder of the world since ancient times. Whenever the tide comes, the huge waves are surging and the momentum is magnificent. The sound of the tide shakes the earth and the earth, such as thousands of horses and horses, and the Hengjiang River is tumbling. The tide head is generally 1 to 2 meters high, and the highest is more than 5 meters. It is advancing upstream at a speed of 5 to 7 meters per second. It is as spectacular as a broken bamboo.

But the harm caused by this tide is really not easy to evaluate. On the one hand, he can bring new energy to the people of apocalypse. On the other hand, he drowns the world of death, causing many villagers and villages to disappear and Damaged, and since the advent of apocalypse, there have been many monsters in the sea of ​​death. These mutant monsters will come to the world of death with the tide, and innocent villagers will become food for these mutant monsters.

In order to prevent the tide from attacking the villagers, the death world has established a large base as a line of defense to protect the tide. Now they are in this base, Lin Feng and Little Lin.

As the night came, more and more people from this base appeared on the street. They were in a hurry, and they appeared to be rushing from outside the base.

From the tension of these people, we can know that the tide is coming, and the moonlight in the sky becomes dim. It seems that because the three moons are connected in a straight line, the moonlight is also reduced a lot. In the dark night, this tension The atmosphere makes Lin Feng a little worried.

When the outside came from the house! After a loud noise, the people in the base looked nervously at the gate of the base. Lin Feng and several of them also came out to check the situation. The gate of the base has been closed, and the tide of apocalypse began.

The sound of thousands of horses was heard outside the base, and there was still strong water vapor and the smell of death in the air.

"The sea of ​​death is overflowing, let's hurry into the house."

Lin Feng smells the danger in the air, let Dong Wu and Little Lin treasure enter the house to hide. To be continued.

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