Is sandstorm a phenomenon before the earthquake?

? Sandstorms will turn the sky yellow. It won't be an earthquake.

Sandstorm is the general name of sandstorm and sandstorm, and it is a sign of desertification. It refers to a disastrous weather phenomenon that strong winds roll up a lot of dust on the ground, making the horizontal visibility less than 1 km. It has the characteristics of suddenness and short duration, low probability and great harm.

Among them, sandstorm refers to a sand-laden storm formed by strong wind blowing a large amount of sand near the stratum; Sandstorm is a storm formed by strong winds, which brings a lot of dust and other particles into the sky.

On 20021March 15, according to the latest satellite monitoring of the National Satellite Meteorological Center of China Meteorological Bureau, dusty weather occurred in Inner Mongolia, northern North China, western Northeast China and eastern Northwest China due to the strong wind behind the frontal cyclone cloud system.

Sandstorm refers to the weather phenomenon that strong winds blow up dust on the ground, making the air very turbid and the horizontal visibility less than 1km. Sandstorm is a weather phenomenon in wind erosion and desertification, and its formation is influenced by both natural factors and human activities.

Natural factors include strong wind, decreased precipitation and its sand source. Human activity factor refers to the increase of sandstorm frequency after vegetation destruction in the process of economic development. ?

Sandstorm weather mainly occurs in winter and spring. This is because there is little precipitation in winter and spring in semi-arid and arid areas, the surface is extremely dry and loose, and the wind erosion resistance is very weak. When the wind blows, a lot of dust will be entrained in the air, forming sandstorm weather.

Strong wind, strong thermal instability and sand source are the dynamic factors and material basis of sandstorm formation respectively.

The above content source: Baidu Encyclopedia-Sandstorm