Fish_scale_tide_in_Qiantang_River_钱塘江现鱼鳞潮

Crazy English
2024.4中国的钱塘江一直以壮观涌潮而闻名，有一种罕见潮景在2021年才首次被定义为新潮景，这就是鱼鳞潮。

Fish scale tide in Qiantang River
钱塘江现鱼鳞潮
重庆　袁　泉
China s Qiantang River is famous for a unique natural phenomenon, a wavy pat⁃tern tide that was only observed for the first time in 2021 and has come to be
known as fish scale tide.The Qiantang River s estuary (江口) in Zhejiang Province has long been famous for having the strongest tidal bores in the world. At times, they can get as tall as nine meters, which means the area regularly sees trains of large waves moving upstream
against the normal current. However, in 2021, during a scientific expedition, re⁃searchers discovered another interesting natural phenomenon unique to this estu⁃ary. When certain conditions are met, the tide comes in spiraling (螺旋) waves that
look like fish scales on the water s surface. The phenomenon becomes known as fish scale tide.Because this unusual tide pattern was only observed a couple of years ago, the exact reason for its occurrence is appar⁃
ently still up for debate. Different sources cite different reasons for the formation of fish scale tide. For example, some netizens believe that the phenomenon is the result of a series of factors.According to INF News , astronomy, topography and wind direction are the main factors that produce fish scale tide. Apparently, the moon and sun play a big part in the phenomenon, as does the shape of the estuary —very narrow at the river mouth, but then very wide where it meets the sea. Whatever the exact necessary con⁃ditions for the formation of fish scale tide may be, one thing is for sure —they rarely occur at the same time, hence the rarity of the phenomenon.Reading Check
What is fish scale tide according to the text?50。