Typhoon: The deadliest killer is not the wind
More than 70 percent of the deaths in Typhoon disasters in history have been caused by storms and floods rather than strong winds.
What is Storm?
Storm waves are caused by Typhoon's strong winds and low air pressure total, pushing sea water toward the shore.Abnormally high sea level.Severe Typhoon can cause 3-6 meters or more of water to rise, which is equivalent to a two-storey ocean that flows to the land.
The two causes:
- The accumulation effect of wind. (主力) : toward 岸大风持续把海水推 toward 海岸
- Low pressure effect.Air pressure: 1 hPa per decrease, sea level rise about 1 cm, Severe Typhoon Pressure several dozen hPa lower than the outer edge
Why are storms the deadliest?
Historical statistics show that more than 70% of the deaths from Typhoon disasters are caused by storms and floods, not by the wind itself:
- In 1970, a hurricane in the Gulf of Bangladesh killed about 300,000 people.
- 2013 Typhoon "Haiyan" killed more than 6,000 people in the Philippines, most dead at Storm
- 1956 Typhoon "Wendey" (5612) caused major casualties in Zhejiang, storm storm was the main cause
The density of sea water is 800 times the density of air, and 1 meter deep flowing sea water is enough to destroy brick houses.
The most dangerous combination: Storm + astronomical tide
If the Typhoon Landfall coincides with the first of the Lunar calendar, the astronomical tide after the fifteenth, the increase in water overlap with the orgasm, the risks of flooding and wreckage increase drastically.
How to Prevent Coastal Residents
- Receiving storm storm orange/red warning, low-temperature areas, seaside, fishing discharge workers must be evacuated—this is not a recommendation, it is a mandatory requirement
- Don't go to the sea " Tide ", Photographs, Big Bang Events happen almost every year
- Fishing boats to return to port early wind refuge strengthened, personnel can not leave the boat
- Learn about residential altitude and disaster shelter Position, evacuation routes avoiding cross-sea bridges and coastal roads