What impact will the typhoon have?

What's the impact of typhoon? Typhoon is a meteorological disaster, which often causes great losses to people's personal safety and property, and typhoons are very frequent in typhoon season. What impact will the typhoon have? Let's have a look.

What will a typhoon cause? 1 1. Typhoons can cause floods. After typhoon "Fete" landed, waterlogging in Yuyao and other places was serious, and the water in many streets was waist deep, exceeding 1 meter. Some primary and secondary schools were forced to suspend classes.

2. Typhoon will drown people. In areas swept by typhoons, houses may be damaged, and people who have no time to escape may be injured, drowned or electrocuted.

Typhoon will destroy buildings. Typhoon will not only destroy fragile buildings, but also destroy crops, drown some cows, lose their fields and even their animals.

4. Typhoon will affect flight. During the typhoon, some flights may be grounded, and some flights already on the road may be attacked, which is quite scary to think about.

Extended data

The formation of typhoon needs: the sea surface water temperature is above 26℃ and 5℃; Initial disturbance of a positive vorticity; The shear of ambient wind in the vertical direction is very small; Low pressure or cloud disturbance is at least several latitudes from the equator.

Because people's understanding of typhoon formation is not sufficient so far, the above list is only a necessary condition for typhoon formation. The initial stage of typhoon is tropical depression, and it usually takes about 2 days from the initial low-pressure circulation to the maximum average wind force near the center, only three or four days for the slow one and only a few hours for the fast one.

In the development stage, the typhoon continuously absorbs energy until the central air pressure reaches the lowest value and the wind speed reaches the maximum value. After the typhoon landed, it was affected by ground friction and insufficient energy supply.

There are two paths for typhoon extinction.

The first one is that after the typhoon lands, it will weaken and die quickly due to the joint influence of ground friction and insufficient energy supply, and the residual cloud system after its death can bring long-term heavy rainfall to a certain place.

The second is that after a typhoon lands, it is easy to degenerate into an extratropical cyclone to the north, and after it degenerates into an extratropical cyclone, it will generally die out.

What impact will the typhoon have? 2 the influence of typhoon.

I. Benefits

The typhoon brought people abundant fresh water. Typhoon brought a lot of rainfall to the coast of China, the coast of the Sea of Japan, India, Southeast Asia and the southeastern United States.

2. The tropical and subtropical areas near the equator have the longest sunshine time, and the dry heat is unbearable. If there is no typhoon to dissipate the heat in these areas, it will be hotter there and the surface sand shortage will be more serious. At the same time, the cold zone will be colder and the temperate zone will disappear. There will be no spring city like Kunming in China, and there will be no evergreen Guangzhou. "Beidacang" and Inner Mongolia grassland will also cease to exist.

The top speed of typhoon can reach more than 200 kilometers per hour, and it can destroy everything wherever it goes. This huge energy can directly cause disasters to mankind, but it also keeps the earth in thermal balance and makes mankind live and work in peace and contentment.

4. Typhoon can also increase fishing. Every time a typhoon blows, it turns over the river, rolling up the nutrients in the river bottom and the sea, increasing the bait, attracting fish to gather near the water surface, and naturally increasing the catch.

Second, the harm

1, the windy weather brought by typhoon is one of the main hazards of typhoon, especially the strong wind near the typhoon center is very strong. The next paragraph will describe the danger of strong winds for us. It is difficult to walk with a 6-level umbrella, inconvenient to walk against the wind with a 7-level wind, broken branches with a 8-level wind, falling roof tiles with a 9-level roof, uprooting trees with a 10 level, falling objects from high altitude, and collapse of dangerous houses, all of which are easy accidents in typhoon days.

2. Typhoon influence is often accompanied by heavy rain, even heavy rain or torrential rain. Rainstorms easily lead to floods, which cause villages, houses, ships, bridges and amusement facilities to be flooded or even destroyed, resulting in loss of life and property. Heavy rain may lead to the collapse of water conservancy projects, causing serious danger. Heavy rain may also cause geological disasters such as landslides and mudslides, causing casualties.

3. Storm surge is easy to damage seawalls, culverts and docks. The revetment and other facilities will cause the seawall to burst, the seawater will flow backward, and even people nearby may be washed away directly, causing casualties.

4. Typhoon often brings stormy weather when crossing the border, causing huge waves on the sea surface, which seriously threatens navigation safety. After the typhoon landed, the storm surge may destroy crops and various building facilities, causing great losses to people's lives and property.

What will a typhoon cause? 3. The harm of typhoon

1, gale

The wind speed of typhoon is greater than 17m/s, even greater than 60m/s ... According to the measurement, when the wind reaches 12, the wind pressure per square meter above the plane perpendicular to the wind direction can reach 230kg. Therefore, typhoons and strong winds and the waves caused by them can throw the 10,000-ton ship into the air and smash it, or push it inland; It is also enough to damage or even destroy buildings, bridges and vehicles on land, especially in areas where buildings are not reinforced. The wind will also blow debris into the air, making the outdoor environment very dangerous.

2. Heavy rain

The arrival of a typhoon will cause heavy precipitation, sometimes lasting for several days. The rainfall center can drop 100-300mm, or even 500-800mm rainstorm a day. The flood disaster caused by typhoon and rainstorm has become the most dangerous disaster because of its fierce destructive power. Continuous heavy rainfall will also cause secondary disasters such as landslides and mudslides.

3. Storm surge

When the typhoon landed, due to the typhoon's strong wind and low air pressure, the sea water piled up to the coast, the tide level rose sharply, and the waves pushed to the coast like mountains and seas. The storm surge of a strong typhoon can raise the coastal water level by 5-6 meters. If the storm surge reaches the high tide level of astronomical tide level, it will produce high-frequency tide level, resulting in overflow, sea wall burst, houses and various building facilities destroyed, towns and farmland flooded, resulting in a large number of casualties and property losses.