What are the hazards of sandstorms to humans? What are the characteristics of sandstorms?

Dust storms mainly occur in winter and spring. This is because there is little precipitation in semi-arid and arid areas in winter and spring, the surface is extremely dry and loose, and the resistance to wind erosion is very weak. When strong winds blow, a large amount of sand and dust will be swept into the air, forming sandstorms. Today I will mainly share the harm that sandstorms bring to humans.

Contents of this article

1. The harm of sandstorms to humans

2. What kind of disaster is sandstorm?

3. What are the characteristics of sandstorms?

The harm of sandstorms to humans

The hazards of sandstorms are strong winds and sandstorms. The impacts are mainly manifested in the following aspects:

1. Wind erodes soil, destroys vegetation, and buries farmland.

2. Pollute the air.

3. Impact on traffic. The impact of sandstorms on traffic is mainly manifested in the following aspects: first, it reduces visibility and affects driving and aircraft take-off and landing; second, sand and dust bury the roadbed and hinder traffic.

4. Affect the use and production of precision instruments.

5. Harmful to human health.

6. Cause weather and climate changes.

What is a sandstorm?

Dust storms are meteorological disasters.

Dust storm is the general term for sandstorm and dust storm, which is a sign of desertification. It refers to a disastrous weather phenomenon with low probability and high harm, characterized by suddenness and short duration, in which strong winds blow up a large amount of sand and dust from the ground, making the horizontal visibility less than 1 km. Sandstorm refers to a storm with sand particles blown into the near-ground layer by strong winds, while dust storm refers to a storm formed by strong winds blowing a large amount of dust and other fine particles into the high altitude.

Sandstorm weather mainly occurs in winter and spring. This is because there is very little precipitation in semi-arid and arid areas in winter and spring, the ground surface is extremely dry and loose, and the ability to resist wind erosion is very weak. When strong winds blow, a large amount of sand and dust will be blown into the air, forming sandstorm weather.

What are the characteristics of sandstorms?

1. The wind and sand wall stands tall

When almost all sandstorms come, we can see a black wall of wind and sand moving quickly in the direction of the wind, getting closer and closer. From a distance, the wall of wind and sand is as tall as a mountain, very much like a city wall, and is the vanguard of the coming sandstorm.

2. Dark sky

When a severe sandstorm occurs, there will be a strong wind of more than level 8, which is so strong that it can blow up stones and sand. As more and more sand and dust fly into the air, the dense sand and dust cover the sky and block the sunlight, making it impossible for people to see anything for a period of time, just like at night.

3. Tumbling

When black wind blows, the air near the ground is very unstable. The heated air below rises, and the surrounding air flows in to replenish it, causing the air to roll up and down carrying a large amount of sand and dust, forming countless sand and dust balls of different sizes that converge and rush in the air.

4. Ambilight

Where the sand wall passes, the sky changes from bright to dark, which is caused by the light passing through the sand belt with different thickness and density.