Why can typhoons be predicted in advance, but earthquakes cannot?

Because typhoons can be directly observed by meteorological satellites. Earthquakes are crustal movements, and the power comes from magma under the crust. People can't observe the change of the shell through the surface soil. The two are completely different. Secondly, air is a single substance, while the earth's crust is composed of many substances with different strengths. Some rock formations are easily broken. Some rock formations are not easily broken. So the situation is much more complicated.

Earthquakes are vibrations caused by the rapid release of crustal energy, which may lead to landslides and even volcanic activity. If there is an earthquake on the seabed, the movement of the seabed may even trigger a tsunami. Earthquakes occur every day on the earth, most of which are small in magnitude or occur in remote areas such as the seabed, and most people do not feel them.

However, in areas with poor seismic performance and relatively concentrated population, earthquakes with a magnitude of 5 or above on the Richter scale may cause casualties. From the perspective of political science, as an applied discipline, the process of earthquake prediction will inevitably involve social problems. If the weather forecast is not accurate, you can scold this idiot. The weather forecast is not accurate at all, not as good as Jam Hsiao. But earthquake prediction means that thousands of people move before the disaster, calm the panic, and so on. There may be social unrest. These are by no means "sorry, I didn't predict correctly this time." Can be solved.

Even if there is only a probability of 1% that there will be no earthquake and a probability of 99% that there will be an earthquake, the government dare not make a decision to start the evacuation warning, which requires great risks and responsibilities. Even Japan, an island country that has experienced countless earthquakes, can only rely on sensitive detectors to send out early warning signals, divert traffic and launch rescue as soon as possible when earthquakes occur, because it takes time for earthquakes to spread, but it is still impossible to "scientifically predict" the earthquake disasters that have not yet occurred.

At present, China has built an earthquake early warning and monitoring network of 2.2 million square kilometers, making China the third country with earthquake early warning capability after Japan and Mexico, that is, it can give an alarm within a few seconds before the earthquake wave arrives, so that people can find shelter quickly.