Sichuan issued a yellow warning for disasters. What are the topographical conditions in Sichuan and why are disasters frequent?

Because the terrain of Sichuan is like a basin, surrounded by mountains. In addition, Sichuan is located at the junction of plates, which is more prone to geological disasters.

Geological disasters are a manifestation of crustal movement, usually manifested as earthquakes and volcanic eruptions. But no matter what kind of expression, it will eventually have a huge impact on human society. The high-risk areas of earthquake disasters are often located at the junction of plates, just like Japan and Indonesia. Natural disasters such as volcanic eruptions and earthquakes will occur every three to five times.

Sichuan issued a yellow warning for disasters. Sichuan has issued a yellow warning for earthquakes continuously, which is the third time that Sichuan has issued relevant warning information. Moreover, geological disasters often occur in Sichuan, and the frequency of disasters far exceeds that of other provinces. In addition, once a geological disaster occurs in Sichuan, the consequences are very serious.

It has a lot to do with the topography of Sichuan. The reason why natural disasters often occur in Sichuan is, in the final analysis, because of topographic factors. From the map, we can clearly see that Sichuan area is like a basin. Surrounded by mountains, in the event of mudslides such as heavy rain, floods and mudslides will flow into the basin. It has caused serious damage to local houses and roads, and the altitude in Sichuan is low. Therefore, heavy rainfall and other weather often occur, and heavy rainfall is one of the important factors that cause geological disasters.

It is related to the plate position where Sichuan is located. Of course, the terrain is only one aspect, mainly because of the plate of Sichuan map. We must first understand that the earth's crust is made up of many plates. The boundaries between plates are not seamless, so plates will collide with each other on the earth's surface. When the Asia-Europe plate collided with the Indian Ocean plate, Sichuan was at the junction of the plates. Serious earthquakes and other natural disasters will occur in Sichuan, and the collision of crustal plates will release a lot of energy.