It is reported that "Meranti" caused 18 deaths and 11 missing people in Fujian. How powerful is the typhoon?
Typhoon "Meranti" brought serious disaster to Fujian. Typhoon No. 14 "Meranti" is the strongest typhoon to land in mainland my country in recent years and the strongest typhoon to land in southern Fujian since 1949. According to a new announcement from the Fujian Flood Control Office, as of 21:00 on the 16th, 18 people had died due to the disaster in the province and 11 were missing. "Meranti" is the strongest typhoon
The No. 14 strongest typhoon "Meranti" is the strongest typhoon that has logged in mainland my country in recent years. It is also the strongest typhoon that has logged in southern Fujian since 1949. Xingsheng The compressive strength reached level 17 at that time, and the standard air pressure near the center was once as low as 883 hPa, setting a new global climate record.
"Meranti" made landfall in the coastal areas of Xiamen City in the early morning of the 15th. The damage caused was mainly in the Chaoshan area of Fujian Province, where the population is more concentrated. It caused flooding in big cities, collapsed houses, and foundations. Facilities were damaged, water and electricity lines were cut off, especially in Xiamen, where the energy supply in the same city was almost paralyzed, water was cut off across the board, and in Quanzhou and Zhangzhou, there were large-scale power outages, resulting in extremely serious property losses.
"Meranti" is the strongest typhoon to land in mainland China in recent years, and it is also the strongest typhoon to land in southern Fujian since 1949. When it is strong, its compressive strength reaches level 17 (70 meters/second) , the standard air pressure near the management center was once as low as 883 hPa, updating global climate records.
In Quanzhou City, the landing point, the maximum instantaneous wind speed was measured to reach level 17 (63.7 meters/second). Looking around, 650,000 green trees were cut off, broken or uprooted, and the curtain wall glass was blown away. Lose. The rough seas of the typhoon
The rough seas rolled by the strong typhoon caused the anchor chains of some large and medium-sized ships to be broken, shipping containers were blown away, and the fishing rafts were seriously damaged; the strong typhoon caused a maximum increase of 2 meters in water, and the southeast The storm surge in some coastal areas exceeded the orange warning, and Qingshi Rock suffered serious erosion. Extremely heavy rainfall swept our province. 74 counties (cities and districts) experienced heavy rains. Among them, 50 counties (cities and districts) had rainfall exceeding 100mm, and 28 counties (cities and districts) exceeded 200mm. The top five were Xiapu. 508mm, Anxi 507mm, Yongchun 462mm, Fu'an 427mm, and Zhelong 397mm; the rainfall intensity is huge, with the maximum 1-hour rainfall of 123mm in Anxi, 111mm in Lianjiang, and 102mm in Haicang, and the maximum 3-hour rainfall in Fu'an and Anxi of 230mm and 219mm, respectively. Both have improved historical data, exceeding a once-in-a-century occurrence.
Precipitation caused 20 floods above the warning level and 4 above-guaranteed floods in the main tributaries of Jinjiang City, Saijiang River, Mulan River and the key trunks and tributaries of the Minjiang River and Jiulong River. Shanmei Reservoir in Jinjiang City suffered 75 When there is a flood once a year, the water entering the reservoir is 4,087 cubic meters per second; urban flooding in Quanzhou is serious, and urban flooding in Xiamen, Fujian Putian, Fuzhou and other cities also occurs to varying degrees.
The No. 14 Super Typhoon "Meranti" has long since receded, and the No. 16 Strong Typhoon "Maleka" is gradually approaching Fujian Province, and the danger is about to appear. Fujian Province requires the province to pay close attention to typhoon dynamics and strictly supervise the sailing work of wooden boats and fishing raft staff to ensure water safety.
The people affected by the disaster have been properly treated, post-disaster reconstruction has been steadily progressing, production and daily life order in the disaster-stricken areas has been basically restored, and social order is stable. The destructive power of strong typhoons is very high, and the damage it can cause includes the following three points:
1. Strong winds: Hurricane-level winds are powerful enough to damage or even destroy buildings, bridges, vehicles, etc. on land, especially buildings. Areas where objects are not reinforced will cause greater damage, and strong winds can blow debris into the air, making the outdoor environment very dangerous.
2. Heavy rain: Typhoons can cause continuous downpours. Rainfall in mountainous areas is heavier and may cause river flooding, landslides, and landslides.
3. Storm surge: Because of the rising water surface caused by typhoon winds and air pressure, coastal areas can be flooded. If appropriate, Astronomical high tides are more harmful. Storm surges are often the most deadly among all kinds of damage caused by typhoons (note: storm surges are different from tsunamis. Storm surges are sustained huge waves caused by the storm's low pressure and strong winds. Waves, tsunami TSUNAMI are short-term progressive waves generated by large earthquakes on the sea floor, and they rush towards the land coast. How powerful is the typhoon?
Typhoon landing causes several indirect damages, including:
1. Disease: The accumulated water and damage to sewers after the typhoon may cause epidemics.
2. Damage to infrastructure systems: Typhoons may damage roads, power transmission facilities, etc. etc., hindering the rescue work.
3. Agriculture: Wind and rain may damage fish and agricultural products, causing food shortages.
4. Salt wind: The salt content of the sea water increases with the typhoon. The huge waves caused are carried to land and attached to the leaves of crops, which can cause crops to wither. If attached to cables, they may cause leakage and strengthen the intensity of monsoon cold currents or continental anticyclones: when typhoons encounter a very strong continental cold current, The pressure gradient between the two increases, and the latter will absorb the energy of the typhoon and intensify the cold current. It can be said that it is a highly destructive natural disaster: violent storms and diseases wherever it goes.
What are the benefits of typhoons?
In addition to causing disasters and losses, typhoons also have some benefits, as shown in:
1. Cooling down and relieving the heat, while also bringing a large amount of fresh water resources.
2. Alleviating drought conditions, such as latent drought in the middle and lower reaches of the Yangtze River.
3. The study of typhoons is conducive to the study of atmospheric movements and can provide us with important data on climate and meteorology.
4. The advancement of typhoons from low latitudes to high latitudes can adjust the global heat balance and play an important role in changing the climate.
5. The strong winds brought by typhoons provide us with research directions for actively utilizing wind energy in the future, and are of great significance to the study of new energy sources.
6. Typhoons can dispel smog, purify dust particles in the air, and bring lightning.
7. Kill harmful substances in the air and produce ozone, which is important for improving the atmosphere. Quality matters.
4. Typhoons are masterpieces of nature that no one can control (including their generation, direction, and power). Currently, they can only be forecasted.