What is a powerful ocean typhoon like?

people sometimes find a strong cyclone like a mushroom on the tropical ocean surface, with a diameter of several hundred kilometers and a cloud height of over 9 kilometers. This is a typhoon. Surge, rainstorm and storm surge brought by it have caused great damage to ships at sea and coastal facilities.

Typhoons can be divided into typhoon eye area, typhoon vortex area and typhoon periphery area. The typhoon eye area is the central part of the typhoon, which is a relatively quiet hollow tubular area with partly cloudy or cloudless weather, with a diameter of 1 ~ 6 kilometers, extremely low pressure and little change, surrounded by high cloud walls. The sea conditions here are very bad, and pyramid waves, which are extremely harmful to ships, often appear here. Typhoon vortex area is the annular area with the maximum wind speed around the typhoon eye, where the tall and broad cloud wall is tens of kilometers wide and its radius is about 1 kilometers. Strong winds of 4 m/s to 6 m/s are common in this area, and there have been strong winds of more than 1 m/s. The periphery of the typhoon is a windy area on the edge of the typhoon. The weather in this area is chaotic and rolling, and the rainfall is sometimes large and sometimes small, sometimes falling and sometimes stopping. The wind gradually increases to the center of the typhoon, and the air pressure decreases.

On September 26th, 1935, the 4th Fleet of the Japanese Navy was suddenly hit by a typhoon when it was marching on the Sanlu Sea. However, despite the fierce wind and waves, it still proceeded as planned. At that time, the maximum wind speed in the typhoon center was 4m/s, and the maximum wave height was more than 14m. The fleet crossed the typhoon and entered the typhoon eye. As a result, 38 warships were attacked by strong winds and waves, and the destroyers "Chuxue" and "Xiyu" were cut off by the waist, and the bridge of "Wangyue" was broken, and all the mine ships that entered the dangerous semicircle were wiped out. Fourteen large ships with more than 5, tons were also damaged to varying degrees, with a large number of casualties and extremely heavy losses.

Central Japan and kanto region were hit by a typhoon on September 26th, 1958. The torrential rain brought by the typhoon caused the Izu Kanye River levee to burst, and the northern plain of Izu became a Wang Yang, and 5 people immediately died. The coastlines of Nagoya City and Shikoku City were flooded, and 5, people were swept away by the flood again. This typhoon from Izu Bay made people not only know the terrible typhoon, but also taste the tsunami.

On September 26th, 1954, there was a typhoon, which crossed from Japan, then turned back and attacked Hokkaido. The huge wind and waves turned the 8,-ton Qingdao-mail intermodal ship Dongye Maru upside down, and more than 1,3 people were buried at the bottom of the sea. "Dongye Maru" is not an ordinary ship, but a high-quality ship that makes the crew proud, and the ship's handling facilities are also very advanced. At that time, there were not only "Dongye Maru" on the sea surface of Hakodate, but also many cargo transport ships of Qinghan, which also subverted and sank in an instant.

The typhoon that occurred in Bangladesh in November p>197 was the most serious typhoon disaster in modern times. This typhoon, which develops strongly in the Bay of Bengal, has a central pressure as low as 94 hectopascals and a maximum wind speed of 12 knots (62 m/s). It landed in Hatiya near Chittagong from the night of November 12th to the early morning of 13th, and violently attacked the coast of Bangladesh. Violent winds, heavy rains and big tides have swallowed up countless islands, fishing villages and farms. Because those two days happened to be October 14th and 15th of the lunar calendar, they caught up with the astronomical tide, and with the storm tide, the highest tide level was over 6m, and huge waves swept away many people who were still sleeping. In a short time, more than 3, people were killed and tens of millions were displaced. The entire densely populated Ganges Delta instantly turned into a terrible hell on earth. The huge economic losses it suffered are incalculable.