Tide-watching Tourism Strategy of Qiantang River

Qiantang River Tide Watching Tour Guide: The first stop is at Liangjiadun Scenic Spot, the second stop is at Dakou Tide Watching Spot, and the third stop is at Yan Guan Tide Watching City.

1. Tidal observation point in Liangjiadun Scenic Area: Due to the formation of sand island in the center of the river, cross tide may be observed in Xincang area, but the position of cross tide may be shifted due to the change of erosion and deposition of medium sand, and first-line tide, cross tide, secondary tide, reentry tide and foam tide may be observed in flood season.

2. Tidal observation point with large drop: this section is the most dangerous section in the past years, with fast tidal bore, and the south tide and the east tide arrive successively, and the east tide is greater than the south tide, so the second tide can be seen in the spring tide, and it may overflow the ancient seawall top and flood control pavement at high water level, so special attention should be paid to the safety of tidal observation, and the second tide and the first tide may be seen in the flood season.

3. Yan Guan Tide Watching City: Yan Guan is a world-famous tide watching resort. Since ancient times, the world wonder, Haining Tide, has been fascinating with its unique spectacle. You can see the famous first-line tide of Qiantang River in this area. The best time to visit Qiantang River is from July to October in the lunar calendar. Su Shi has a famous sentence handed down from ancient times by Qiantang Confucius, the August 18th tide, which is a magnificent sight.

Causes of tidal observation in Qiantang River

The tidal bore of Qiantang River is a natural wonder in the world, which is caused by the centrifugal effect of celestial gravity and the earth's rotation, as well as the special terrain of the bell mouth of Qiantang River in Hangzhou Bay. First of all, it is related to the shape and special topography of Hangzhou Bay where Qiantang River enters the sea. Hangzhou Bay is trumpet-shaped with a big mouth and a small belly. The channel of Qiantang River narrows and rises sharply from the west of Ganpu, which leads to the sudden decrease of riverbed capacity, and a large number of tides flood into the narrow and shallow channel, and the tidal head is blocked.

The rapid advance of the ebb tide made the tide stand steeply and roared through the waves, presenting a thrilling spectacle. There are many trumpet-shaped river estuaries, but few estuaries can form tidal bore. Qiantang River tidal bore can be included in this minority. Through research, scientists believe that the generation of tidal bore is also related to the ratio of water velocity to tidal wave velocity in rivers. If they have the same or similar speed and are evenly matched, it will be beneficial to the generation of tidal bore.

Reference to the above content: Baidu Encyclopedia-Qiantang River