Why is the mirage in Hongze Lake so clear?

At about 3: 40 pm on August 4, a spectacular mirage appeared on Hongze Lake. In the southwest of the lake, an ancient architectural complex has appeared. These ancient buildings are patchwork, very clear and exquisite, with antique octagonal towers, residential houses and green trees and jungles.

Photographs taken by photographers in Hongze Lake Bay in the southwest of Hongze Lake show that there is an ancient pagoda in the southwest of the lake, which is about ten stories high. These ancient buildings are patchwork, very clear and exquisite, with antique octagonal towers, city walls and houses. On the lake not far from these buildings, ancient sailboats are sailing, forming a complete and vivid ancient lakeside city. The wind turbine that was originally on the shore also moved to the middle of the lake and stopped spinning in the water. This spectacular scene attracted many citizens and photographers to stop filming.

Photography lovers said: "According to my observation, there are octagonal towers in the past and ancient buildings in the Ming and Qing Dynasties. Blue bricks and tiles, as well as small turrets, are all antique buildings in the past. "

Yu, a resident of Hongze Lake, said that he has lived by this lake for more than 50 years. He had only heard from his parents that there was a mirage on Hongze Lake. Today, he saw it with his own eyes and marveled at the charm of nature. The mirage on Hongze Lake is really beautiful. By about 4: 20 this afternoon, this magnificent scene slowly faded, and the whole mirage lasted for about half an hour.

The reporter learned that a mirage is an abnormal refraction phenomenon, which is the result of light propagation and refraction in the atmosphere with different vertical densities. Mirages usually have two characteristics: first, they appear repeatedly in the same place, for example, mirages often appear over Alaska in the United States; The second is simultaneous appearance. For example, the mirage in Penglai, China often appears in May and June every year, the mirage near Zimlensk, Russia often appears in spring, and the mirage in Alaska, USA generally appears within 20 days after June 20th.