On the morning of May 26, the sea surface near dajiaowan, Hailing Island, Yangjiang City, Guangdong Province, appeared "dragon water absorption" after the rainstorm. The video shows the wind carrying the sea water into the sky. The staff of the scenic spot immediately reminded the tourists to stay away from the coast for the time being. According to witnesses, the 'Dragon absorbs water' is 20 to 30 meters high, and the whole process lasted six to seven minutes.
How does dragon absorb water form?
When a tornado is formed over the water surface, due to the high air pressure around it and the low air pressure in the middle, the tornado will draw the water into the cavity in the center of the storm, and then form an axial vortex. At this time, the tornado is like a cylindrical air column, the upper end of which is connected with the thunderstorm cloud, and the lower end of which is connected with the water surface. It looks like a long dragon lifting the sky and touching the ground is absorbing water.
Tornadoes can be divided into three types according to different formation areas. One is produced on land, which is called 'land tornado'; One occurs in volcanic eruptions and large earthquakes, known as the 'fire tornado'; The third is our protagonist today - the 'Dragon sucks water' produced in rivers and oceans, the waterspout. The waterspout looks like a funnel-shaped cloud circling downward from the bottom of a cumulonimbus cloud. When a tornado is formed over the water surface, due to the high air pressure around it and the low air pressure in the middle, the tornado will draw the water into the cavity in the center of the storm, and then form an axial vortex. At this time, the tornado is like a cylindrical air column, the upper end of which is connected with the thunderstorm cloud, and the lower end of which is connected with the water surface. It looks like a long dragon lifting the sky and touching the ground is absorbing water.
Tornado is a kind of more intense and small-scale air vortex than typhoon, which is usually produced by strong convective movement of air under extremely unstable weather conditions. The strong updraft interacts with the shear wind in all directions, which makes the middle part of the airflow begin to rotate and expand up and down, forming a columnar air vortex. Its rotation diameter gradually becomes smaller and faster, and the air vortex becomes more and more violent, like a funnel-shaped cloud. When the vortex slowly extends down to the ground, a strong negative pressure is generated on the ground, and a tornado is formed. As a disastrous weather system, tornadoes are extremely strong, fast and destructive despite their limited range. " When the phenomenon of "dragon absorbing water" occurs, the wind speed inside the vortex can exceed 200 km / h, and the instantaneous wind speed can sometimes reach above level 12. The duration of dragon water absorption is only a few minutes, the longest is only a few minutes, accompanied by a huge roar, deafening. Therefore, although the diameter of tornado is small, its destructive power is also great.
It can cause ships to turn over, which has a great impact on sea navigation. It can even bring fish, frogs and insects into the air and bring them to a distant place, and then bring down the "strange rain" such as fish rain and frog rain. But you don't have to be too nervous, because 'dragon water absorption' mostly occurs on inland water surface or at low altitude. As long as you are not close to ships and islands, 'dragon water absorption' generally will not cause too much harm. Generally, the concentrated and frequent period of the phenomenon is summer, which can be extended to the end of spring and the beginning of autumn, generally from May to September. During this period, the weather is relatively hot, thunderstorms and severe convective weather appear more frequently, if it occurs in winter, it is very rare/& gt;