What impact will the typhoon cause?

What impact will typhoon cause?

What impact will typhoon cause? Typhoon is a kind of meteorological disaster. Often, wherever the typhoon passes, it will cause huge losses to people's personal safety and property, and typhoon Typhoons are very frequent during the season, so what impact will typhoons have? Let’s take a look. What impact will typhoons cause 1

1. Typhoons can cause floods. After Typhoon Feite made landfall, Yuyao and other places suffered severe waterlogging, with water reaching waist level and more than 1 meter in many streets. Some primary and secondary schools were forced to close.

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

3. Typhoons will destroy buildings. Typhoons will not only destroy fragile buildings, but also damage crops and drown some cattle. Homes will lose their fields and even their animals.

4. Typhoons will affect flights. During a typhoon, some flights may be forced to suspend operations, and some flights already on the road may be attacked, which is quite scary to think about.

Extended information

The formation of typhoons requires: sea surface water temperature above 26 or 5℃; a certain initial disturbance of positive vorticity; ambient wind in the vertical direction The shear is small; low pressure or cloud disturbances are at least a few latitudes away from the equator.

Since people’s understanding of the formation of typhoons is still insufficient, the above listed are only the necessary conditions for the formation of typhoons. The initial stage of a typhoon is a tropical low pressure. It usually takes about 2 days to go from the initial low-pressure circulation to the maximum average wind force near the center reaching level 8. Some may take three or four days, and some may only take a few hours.

During the development stage, typhoons continue to absorb energy until the central air pressure reaches the minimum value and the wind speed reaches the maximum value. After the typhoon lands on land, it is affected by ground friction and insufficient energy supply.

There are two paths for typhoons to die out.

The first one is: after a typhoon lands on land, affected by the combined effects of ground friction and insufficient energy supply, the typhoon will quickly weaken and die. The residual cloud system after its death can bring long-term damage to a certain place. Heavy rainfall.

The second is: After a typhoon makes landfall, it will easily transform into an extratropical cyclone as it moves northward. After transforming into an extratropical cyclone, it will generally die out slowly. What impacts will typhoons cause 2

Impacts of typhoons

1. Benefits

1. Typhoons bring abundant fresh water to people. Typhoons bring large amounts of rain to the coast of China, the Sea of ​​Japan, India, Southeast Asia, and the southeastern United States.

2. Tropical and subtropical areas close to the equator receive the longest sunshine hours and are unbearably dry and hot. If there are no typhoons to dissipate the heat in these areas, it will be even hotter and the surface desertification will be more serious. At the same time, the frigid zone will become colder and the temperate zone will disappear. Our country will no longer have a spring city like Kunming or Guangzhou, which is evergreen all year round. "Beidacang" and the Inner Mongolia grassland will also cease to exist.

3. The maximum speed of a typhoon can reach more than 200 kilometers per hour, causing destruction wherever it goes. This huge energy can directly cause disasters to human beings, but it is also due to this huge energy flow that the earth maintains a thermal balance, allowing human beings to live and work in peace and contentment, and continue to prosper.

4. Typhoons can also increase fishing output. Whenever a typhoon hits, the rivers and seas are turned upside down, and the nutrients at the bottom of the rivers and seas are swept up. The bait increases, attracting fish to gather near the water surface, and the catch naturally increases.

2. Hazards

1. The strong winds brought by typhoons are one of the main hazards of typhoons, especially the powerful winds near the center of typhoons. The following paragraph will give us a vivid idea of ​​the dangers of strong winds. Level 6 makes it difficult to walk with an umbrella, level 7 makes it difficult to walk against the wind, level 8 winds break branches, level 9 causes roof tiles to fly, level 10 uproots trees, Falling objects from heights, collapse of dangerous buildings, etc. are all accidents that are prone to occur during typhoons.

2. Typhoons are often accompanied by heavy rains, even heavy rainstorms or extremely heavy rainstorms. Heavy rains can easily cause floods, causing villages, houses, boats, bridges, recreational facilities, etc. to be flooded or even washed away, causing loss of life and property. Heavy rain may cause water conservancy project failures and serious dangers. Heavy rain may also trigger geological disasters such as landslides and mudslides, causing casualties.

3. Storm surges can easily destroy seawall embankments, culverts and docks. Facilities such as bank protection can cause seawall breaches, seawater intrusion, and may even directly wash away nearby people, causing casualties.

4. Typhoons often bring violent storms when passing through, causing huge waves on the sea surface, seriously threatening navigation safety. The increased storm water brought by a typhoon after its landfall may destroy crops, various construction facilities, etc., causing huge losses to people's lives and property. What impacts will typhoons cause 3

Danger of typhoons

1. Strong winds

Typhoon wind speed is greater than 17m/s, even greater than 60m/s.

According to measurements, when the wind reaches level 12, the wind pressure per square meter on a plane perpendicular to the wind direction can reach 230 kilograms. Therefore, the strong winds of typhoons and the waves caused by them can throw a 10,000-ton ship into the air and smash it, or push it inland; it can also damage or even destroy buildings, bridges, vehicles, etc. on land, especially The damage was greater in areas where buildings were not reinforced. Winds can also blow debris into the air, making outdoor conditions very dangerous.

2. Heavy rain

The arrival of typhoons will cause heavy rainfall, sometimes lasting for several days. The rainfall center can fall 100-300 mm a day, and even heavy rains of 500-800 mm. Floods caused by typhoons and rainstorms have become the most dangerous disasters because of their ferocity and destructive power. Continuous heavy rainfall can also cause secondary disasters such as landslides and mudslides.

3. Storm surge

When a typhoon lands, due to the strong winds and low pressure of the typhoon, seawater accumulates toward the coast, the tide level rises sharply, and the waves push toward the coast like mountains and seas. The storm surge of a strong typhoon can raise coastal water levels by 5-6 meters. If the storm surge reaches the astronomical high tide level, high-frequency tides will be generated, causing overflows, breaches of sea walls, destruction of houses and various construction facilities, flooding of towns and farmland, and causing a large number of casualties and property losses.