Why is the earthquake at night? Why not inform them in advance?

Earthquakes should be familiar to everyone, but sometimes it feels like an earthquake happened at night. Why did the earthquake happen at night? Can't the earthquake be notified in advance?

Why are earthquakes always at night?

The harm of earthquakes is not only sudden, but also mostly occurs at night, even when people fall asleep in the middle of the night. For example:

1906 April 12 An earthquake of magnitude 8.3 occurred in San Francisco, USA at 5 am12;

1906 On May 22nd, the largest earthquake of magnitude 8.9 in Chile in the 20th century occurred after sunset 19: 00.

1On July 28th, 976, the Tangshan earthquake of magnitude 7.8 occurred at 3: 42 am.

199565438+1October 17, Kobe earthquake in Japan, which occurred at 5: 46 am;

According to statistics, during the period of 1985, there were 25 earthquakes with magnitude above 5 in * * * area of China, 20 of which occurred between sunset 19 and 6 am the next day, accounting for 80% of the total.

As we all know, the gravity of the moon will cause ocean tides, and this change is not limited to sea water. Tides can also appear in the solid crust, but it is generally difficult for us to find them. It can be found that the solid crust can also have a tidal amplitude of about 0.5 meters under the gravity of the moon. Although the earthquake is a reflection of the internal movement of the earth, sometimes when it is ready to go, the solid tide generated by the gravity of the moon will play a hair-trigger role, making the long-term accumulated earthquake energy suddenly come out in generate.

Earthquakes not only occur at night, but also often occur on the first day and fifteenth day of the first lunar month. This is also because the gravitational tide of the moon will reach a large value before and after the new moon. For example, the Kobe earthquake of 1995 occurred in the lunar calendar1July, the Indian earthquake of 1993 occurred in the Mid-Autumn Festival of August 15, and the Tangshan earthquake of 1976 occurred on July 2. 1February 990 10 in the early morning 1: 57, an earthquake with a magnitude of 5. 1 occurred in Taicang, which occurred in the Lantern Festival on the 15th day of the first lunar month.

Why was the earthquake not notified in advance?

In fact, the biggest reason is that the crustal movement is too complicated and there is no law to follow, which is different from weather forecast, and can be predicted by satellite cloud pictures and the changing law of the atmosphere.

In places where earthquakes often occur, the crustal movement is quite frequent. According to the current level of science and technology, there is no definite method to determine which crustal movement is the source of the earthquake.

In order to solve this technical problem, scientists have actually carried out simulation experiments long ago. Scientists input the complete data of the whole crustal movement into the artificial intelligence computing machine, and then analyze it through algorithm learning, and then get the change data and fault state of the energy released by the crust.

Through a lot of training, such artificial intelligence calculation has been able to accurately predict the information of upcoming earthquakes from the information of multiple crustal movements.

After all, such a simulation experiment is an experiment and cannot be applied to reality. In fact, earthquakes cannot be simulated. Therefore, in the actual situation, scientists open their brains wide and use instruments to detect earthquakes. This is a slow earthquake.

As the name implies, a slow earthquake is the slow sliding of faults in the earth's crust, which leads to the slow release of energy. The process is very long, ranging from weeks to months.

In this long process, scientists have enough time to test the data and then calculate it by artificial intelligence computer. The results show that artificial intelligence can really calculate the interaction time of the next fault.

This kind of slow earthquake is a special case, because of its particularity, in fact, the time period and damage of conventional earthquakes are very large, and the situation of each earthquake is different, so it is impossible to collect enough data for analysis. So it takes a lot of effort and energy to break through this technology.

An earthquake of magnitude 4.7 occurred in Chifeng, Inner Mongolia.

At 05: 05 on October 5, 200218+05/KLOC-0, an earthquake of magnitude 4.7 occurred in Arukerqin Banner, Chifeng City, Inner Mongolia (44. 17 degrees north latitude, 0/20.29 degrees east longitude). The final result is subject to the official quick report.

Why did the earthquake hide in the toilet and kitchen?

1. The kitchen or bathroom is mostly the pillar of the main frame of the building. It is safe. ..

Second, the space is small and it is not easy to collapse. ..

3. There are few things. Reduce harm ..

4. There is water.