The couplets of spring tide in Qiantang River Su Dongpo praised the eternal famous sentence of autumn tide in Qiantang.

I. Spring Festival couplets in Qiantang River

1, the tide rises and falls, thousands of troops and horses hide under the water, the sky flies, and the mountains shake the world.

2. One hundred generations of Qiantang springs are amazing, with thousands of layers of clear water and sand waves.

3. Qiantang River roared, moving straight to the mountain.

Secondly, Su Dongpo praised Qiantangkong's poems.

1, view Zhejiang Tao

Su Shi (Tang)

Zhejiang has a long green west coast, and the stormy waves are overturned day and night.

Look at the influx of people in Qiantang, Li Guo, until baldness is not enough.

2. Vernacular translation

The water in Zhejiang is vast and green, and the thrilling waves roll day and night. Look at the frolicters in Qiantang, you can only see white hair, but you can't see your feet.

Extended data:

There are two reasons for the formation of the Qiantang River spring tide: first, of course, the tidal current at the mouth of Qiantang River is large enough. Only in this way can the tide generate enough flapping force (that is, thrust).

The second is that the flow of the Yangtze River north of Qiantang River is large enough. When the flow of the Yangtze River and the tidal current at the mouth of the Yangtze River are large enough, there will be a large enough hedge between the Yangtze River water and the tidal current, which will greatly delay the flow of the Yangtze River water into the sea. The Yangtze River water, which cannot flow into the sea in time, can only advance along the coasts on both sides of the Yangtze River estuary.

At the same time, the hedge between the Yangtze River water and tides will also generate huge energy, which will not be transmitted to the sea and the Yangtze River, but to the coasts on both sides of the Yangtze River estuary. In this way, the energy transmitted to both sides of the Yangtze River estuary will push the Yangtze River water to move far enough to both sides of the Yangtze River estuary. Of course, this process is synchronous. ?

When the Yangtze River water is pushed from the south bank of the Yangtze River estuary to the mouth of Qiantang River, the mixed seawater of the Yangtze River water will flood into Qiantang River in waves driven by enough tides.

Because these mixed waters of the Yangtze River advance along the coast, the tides of Qiantang River generally occur in Haining or Xiasha, Hangzhou, on the northeast bank of Qiantang River. Only when the flow of water mixed with seawater in the Yangtze River is relatively large will it be pushed to a relatively large range and may be pushed to the south bank. Therefore, the frequency of spring tides on the south bank of Qiantang River is much smaller than that on the north bank.

When the Yangtze River water advances along the coast, it will gradually melt into the past sea water on the way forward. Therefore, when the flow of the Yangtze River is relatively small and the tidal current at the mouth of the Yangtze River is relatively small, the Yangtze River water advancing along both sides of the mouth of the Yangtze River will not reach the Qiantang River. It is impossible to form the Qiantang River tide. ?

References:

Baidu encyclopedia-Qiantang tide watching