Why is the Qiantang River known as the wonder of the world since ancient times?

A phenomenon that occurs when the tide rises at the mouth of the Qiantang River in Hangzhou Bay, China. It looks like an upright wall of water, rolling in. The tidal range of the Qiantang River estuary is very large, with a wide funnel-shaped estuary and a gentle riverbed, which causes the tidal wave of the Pacific Ocean to increase dramatically when it travels to this area.

The tidal wave that enters Hangzhou Bay meets the river at the mouth of the Qiantang River, and the wave surface is subject to great resistance, and the front of the wave crest is broken, and it encounters an underwater sand bar, so that the tide is divided into two branches, East Lake and South Lake, and continues to advance towards the estuary. Between Jianshan and Haining, a water column of more than 10 meters high can sometimes be stirred. The broken tide crest is a rolling white wave, 1 2 meters high, propagating at a speed of 4 6 meters per second, and the tide level rises to more than 2 meters in a short period of time.

The autumnal equinox is approaching every year.

It coincides with the high tide and the rainy season, the mean sea level rises, and the tidal range in Haining can be as high as 9 meters, and the phenomenon of high tide is extremely prominent. In the event of a strong easterly or southeasterly wind, the tide is even more spectacular.

Because there is the spectacle of high tide [if mine is helpful to you, please"", thank you! 】

1. The reason why the tide of the Qiantang River is called the wonder of the world is because the tide of the Qiantang River is a majestic and beautiful scene in the world.

2. The Qiantang River tide, referred to as the Qiantang tide, is one of the three major tides in the world, which is caused by the centrifugal action of celestial gravity and the rotation of the earth, plus the special topography of the horn mouth of Hangzhou Bay. Every year on the eighteenth day of the eighth month of the lunar calendar, the tide of the Qianjiang River is the largest, and the tide head can reach several meters. Yu Yafei Shiyun:

Qiantang looked at the waves, and the tide was in front of him in an instant; It seems that in the ordinary river water, the energy contained can be shocking." When the tide comes, the sound is like thunder, the mountains and the sea are overwhelmed, like ten thousand horses galloping, it is magnificent. Beginning in the Han and Wei dynasties (1st to 6th centuries) and flourishing in the Tang and Song dynasties (7th to 13th centuries), it has become a local custom for more than 2,000 years.

The tide of the Qiantang River is magnificent, the bell mouth of the Qiantang River out of the sea, the tide forms a turbulent wave, like a galloping horse, encountering the riverbed near the version of the river bed sand right is blocked, the tide wave is three to five meters high, and the tidal difference is up to nine to ten meters, indeed"The monstrous turbidity waves are emptied, and the rivers and mountains can be destroyed"momentum.

The shape of the tide of the Qiantang River is different, and the riverbed of the Qiantang River is varied, creating a variety of tides including: cross tide, first-line tide, turning tide, cupola tide, midnight tide, T-shaped tide, strange tide, ghost tide and so on.

The tide of the Qiantang River has been known as the "wonder of the world" in the "wonder of the world" since ancient times"It means: the tide of the Qiantang River is a majestic and beautiful scene in the world.

From the text "Watching the Tide", it is a text in the first volume of the fourth grade of the People's Education Edition, and the authors are Zhao Zongcheng and Zhu Mingyuan. It is written about the tide watching the Qiantang River on August 18.

Autumn on the Qiantang River.

The tide is more spectacular than the autumn tide in other places, which is related to the local special terrain, and the place where the Qiandutang River enters the sea is called Zhi Hangzhou Dao Bay. Hangzhou Bay is wide on the outside and narrow on the inside, and is trumpet-shaped. The mouth of the bay in the east is 100 kilometers wide, while the west is only 3,000 meters near Yanguan Town, Haining City.

I don't study well so I don't know about you.

The tide of the Qiantang River has been known as the wonder of the world since ancient times.

The 18th day of the eighth month of the lunar calendar is an annual tide watching day. This morning, we came to Yanguan Town in Haining City, which is said to be the best place to watch the tide. We followed the crowd watching the tide and climbed the embankment of Haitang.

The wide Qiantang River lies horizontally in front of you. The river is calm, wider and wider the further east, and in the sun after the rain, a layer of mist is shrouded. The Zhenhai Ancient Pagoda, Zhongshan Pavilion and Tide Viewing Platform stand by the river.

In the distance, several hills loom in the mist. The river tide has not yet come, and the embankment of Haitang is already crowded with people. Everyone looked east, waiting, looking forward to it.

Around one o'clock in the afternoon, there was a rumbling sound from a distance, like a muffled thunder rolling. Suddenly, there was a lot of noise, and someone told us that the tide is coming! We tiptoed to the east, but the river was still calm, and we couldn't see any changes.

After a while, the chain was late, and the sound became louder and louder, and I saw a white line of canopy plum appear in the place where the water and sky met in the east, and the crowd boiled again.

The white line soon moved towards us, gradually lengthening and thickening, and crossing the river. Closer, I saw the white waves rolling, forming a wall of water more than two lengths high. The tide is getting closer and closer, like thousands of white war horses marching in unison, galloping mightily; The sound was like a mountain collapsing and the earth cracking, as if the earth had been shaken.

Suddenly, the tide rushed westward, but the aftermath was still surging in the sky, and the wind and waves were still roaring on the river. It took a long time for the Qiantang River to regain calm. Look at the embankment, the river has risen two feet high.

Content expansion: 1. The autumn tide of the Qiantang River is more spectacular than the autumn tide in other places, which is related to the special topography of the local area. The place where the Qiantang River flows into the sea is called Hangzhou Bay.

Hangzhou Bay is wide on the outside and narrow on the inside, and the mouth of the bay is as wide as 100 kilometers in the east, while it is only 3 kilometers near Yanguan Town, Haining City in the west. At high tide, the tide pours in from the mouth of the bay and rushes to the west, and is constrained by the narrowing banks on both sides, the water surface becomes narrower and narrower, and the tide pushes back and forward, getting higher and higher, forming a magnificent scene of surging and surging.

2. The tide of the Qiantang River has been known as the wonder of the world since ancient times. The full text of "Watching the Tide" describes the spectacular scene of watching the tide on the Qiantang River on the 18th day of the eighth month of the lunar calendar. The content of the tide-watching text is selected from Zhao Zongcheng and Zhu Mingyuan's "I like to see the recent Qiantang tide".

3. Explanation of important words in the text of Qiantang River tide viewing:

Wonders of the world - a rare and magnificent landscape under the sky.

Lying horizontally – meaning lying horizontally.

Shroud - Shroud like a cage silk on it.

Standing – Standing tall and steady like a mountain peak.

Looming – Describe vaguely.

Crowds of people - Describes the large number of people gathered.

Water and sky are connected – water and sky are connected.

Landslides and earth cracks - refers to the sound of strong **, and the sound of the tide is described in this lesson, with an exaggerated meaning.

The tide of the Qiantang River has been known as the wonder of the world since ancient times.

Causes of high tides: Heavenly time: From the 16th to the 18th day of the eighth month of the lunar calendar, the sun, the moon and the earth are almost in a straight line, so the gravitational force of the sea water on this day (the difference between the gravitational force of the moon, the sun or other celestial bodies on the earth's unit mass object and the gravitational force on the earth's centroid mass, or the inertial centrifugal force generated by the earth's movement around the earth-moon (sun) center of mass and the moon (sun) gravitational force) is the largest.

Geographical advantage: It is related to the trumpet-shaped shape of the Qiantang River estuary. Nearly 500,000 acres of reclaimed land in the east of Zheshan on the south bank of the Qiantang River block the estuary like a peninsula, so that the section from Zheshan Mountain to the outer 12 kilometers of the Qiantang River resembles a bottle with a big mouth and a small mouth, the tide is easy to advance and difficult to retreat, the outer mouth of Hangzhou Bay is as wide as 100 kilometers, and the outer 12th section is only a few kilometers wide, and the riverbed in the eastern section of the estuary rises suddenly, and the beach is high and shallow.

When a large amount of tide water pours in from the mouth of the Qiantang River, due to the rapid shrinkage of the river, the tide does not have time to rise evenly, so it has to push the back waves and the front waves, layer upon layer. Secondly, it is also related to the sediment under the Qiantang River, which blocks and rubs the tide, making the front slope of the tide steeper and the speed slowing down, thus forming the back wave catching up with the front wave, and the wave on top of each other.

Winds: Southeasterly winds often blow along the coast, and the direction of the wind is roughly the same as the direction of the tide, which contributes to the tide.

Extended Materials. Watching the autumn tide in Qiantang has become a trend as early as the Han, Wei and Six Dynasties, and this wind is more prosperous in the Tang and Song dynasties. According to legend, August 18 of the lunar calendar is the birthday of the tide god, so the tide peak is the highest.

The court of the Southern Song Dynasty once stipulated that on this day, the colonel of the Qiantang River will read the water division, and then it will become a habit along the way, and August 18 will gradually become the tide watching festival.

In ancient times, Hangzhou watched the tide, with Phoenix Mountain and Jianggan as the best place. Due to the change of geographical location, from the Ming Dynasty, Haining Yanguan was the first resort to watch the tide, so it is also called"Haining tide watching"。

The tide of the Qiantang River has the magnificent momentum of the day during the day and the poetry and painting of the night at night; Watching the tide is a pleasure, and listening to the tide is a reverie. No wonder some people say, "Qiantang Guoli looks at hipsters until the white head is insufficient." ”