What kind of disaster does sandstorm belong to?
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. Sandstorms in China mainly occur in northern areas, among which southern Xinjiang basin, southwestern Qinghai, western Tibet, central and western Inner Mongolia and central and northern Gansu are the most frequent areas.
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.
History of sandstorm
As one of the natural disasters in arid and semi-arid areas, sandstorm is not a modern product. According to scientists' determination of deep-sea rock cores and ice sheet sediments, sandstorms appeared on the earth as early as the end of Cretaceous (70 million years ago).
More than 3000 years ago, there were records of "Yellow Sand", "Rain Dust", "Rain Dust" and "Huang Ting" in Chinese history books. The ancient people in China called the dust falling after the wind "haze", and the annotation in The Book of Songs said: "The final wind accompanied the haze and dispersed the haze rain". Erya says, "The wind is raining and the soil is hazy".
The final wind and "wind" both talk about the weather phenomenon of dust falling after the wind. Because of the dustfall weather in ancient times, "haze" became the proper name of this weather phenomenon.