An earthquake of magnitude 3.0 occurred in Dongfeng County, Liaoyuan City, Jilin Province. What caused the earthquake?

According to the official measurement by China Seismological Network, an earthquake of magnitude 3.0 occurred in Dongfeng County, Liaoyuan City, Jilin Province at 23: 00/1on April 25th, with a focal depth of 8 kilometers and an epicenter at 42.96 degrees north latitude and 125.64 degrees east longitude.

What is the cause of the earthquake?

The cause of the earthquake is that the magma in the mantle is sick, and the mechanism of the earthquake is the same as that of human cancer. The evolution process of earthquakes is divided into seven processes: gestation, formation, latency, awakening, impending earthquake, criticality and explosion. The types of earthquakes are divided into non-fault zone regional earthquakes, fault zone regional earthquakes and regional earthquakes around fault zones. The period of earthquakes varies greatly from gestation to occurrence. ?

What are the signs before the earthquake?

There were many small earthquakes before the big earthquake, but there may not be a big earthquake after millions of small earthquakes, so it is a coincidence. Except for the fabricated earthquake precursors, the rest are basically based on this reason. It's like someone telling you that the precursor of everyone who wins the lottery is to buy lottery tickets. What is really useful at present is that modern information transmission can be much faster than seismic waves in tens of seconds. The study of seismic waves can not only effectively warn the earthquake, but also use the characteristics of seismic waves and corresponding detection techniques to detect underground materials and the internal structure of the earth. ?

Can earthquakes be predicted?

Earthquakes cannot be predicted, but they can be warned in advance. That is, after the epicenter earthquake, people farther away can take protective measures in advance by using the characteristics that electromagnetic waves are faster than seismic waves. Let me start with a relatively simple warning. The early warning of an earthquake is to detect seismic waves by technical means in a very short time before the earthquake, and then send out early warning signals to avoid serious harm to people caused by the earthquake. It has been implemented in China, so in some places, one or two minutes before the earthquake, the TV screen will show how long it will take for the earthquake to arrive.