杭州qiantang river bore

杭州西湖英语介绍

no grand-looking in the world but the qiantang river tide on august 18th."

the extraordinary surging tide of the qiantang river is a world-renowned natural wonder caused by the gravitation of the celestial body, the centrifugal force produced by the rotation of the earth and by the peculiar bottleneck shape of the hangzhou bay.
to the east of zheshan hill on the south bank of qiantang river, there are about 500,000 mu reclaimed-land like a peninsula to keep off the river mouth, so as to make from the hill to the outside 12th section like a large-sized bottle with a small mouth. it is easy for the tide to come, but difficult to ebb. hangzhou bay\'s width is over 100km, but up to the outside 12th section is narrowed only several kilometers.From Joozone.com.

however, the river east part of the riverbed is sharply raised. in this way, it becomes the riverbed high and water a little. as a great quantity from the qiantang river mouth is reaching, the tide cannot be raised equally due to narrowed-down river area. then, it is forced rear tides pushing front tides while the front tide is not fast enough, thus, one upon another, forming the most magnificent natural phenomenon in the world.