What causes Qiantang River tide?
What causes Qiantang River tide?
The centrifugal force produced by the rotation of the earth and by the trumpet shape of Hangzhou Bay in Zhejiang makes it easy for the tide to come in, but difficult for it to ebb. Qiantang River is known for the world’s largest tidal bore, which is locally called the Silver Dragon.
What causes the Silver Dragon wave?
The wave is a tidal bore. Such waves form on rivers that flow into wide, shallow bays that have a large swing in the height of the tides. At the highest tides, the bay acts like a funnel, pushing water into the river. As the river narrows, the tide gets higher, forming a taller wave.
What is the Qiantang tidal?
Description. The Qiantang River in east China’s Zhejiang Province is known as the world’s largest tidal bore. The trumpet-shaped river mouth connects with the East China Sea and causes gigantic tides as high as nine meters.
How wide is the Qiantang River?
investigations were carried out in an upstream reach of the Qiantang River, around 90 km upstream of its mouth in Hangzhou Bay (Figure 1). The river’s width is about 1300 m at the observation site, while the bed slope at the observation site was about 0.06%. …
What is the largest tidal bore in the world?
The Qiantang river
The Qiantang river at Hangzhou in China has the largest tidal river bore in the world, which can be over 4 m high, 3 km wide, and travelling with a speed in excess of 24 km hr−1 (15 mph). At certain locations, reflected waves can reach 10 m in height, and its roar can be heard over an hour before its arrival.
Where is the world’s largest tidal bore?
Hangzhou, China
Along the Qiantang River in Hangzhou, China, site of the world’s largest tidal bore, observers gather at tide-watching pavilions to observe the 9-meter (30-foot) wave. The roar of the tidal wave can be heard for hours before it bores up the river.
How often does the Silver Dragon wave occur?
The tidal bore happens during the spring tide with every full moon, but is strongest in the fall, when the Tide-Watching Festival is held on the 18th day of the 8th month in the Chinese calendar. The festival can attract up to 170,000 tide-watchers and has been celebrated for hundreds of years.
Can you surf a tidal bore?
Surfing tidal bores and river waves is possible and can be done safely. Bores only happen in a few places in the world and may only hit your spot once a year. If you’re lucky, it’s the ultimate experience. This particular wave is usually consistent and strong due to the funnel-type effect on the riverside.
Where is the Qiantang River?
East China
The Qiantang River or alternatively Tsientang River is a river in East China. An important commercial artery, it runs for 459 kilometers (285 mi) through Zhejiang, passing through the provincial capital Hangzhou before flowing into the East China Sea via Hangzhou Bay south of Shanghai.
Where is the largest tidal bore in the world?
Which river has the highest tidal range?
The world’s largest tidal range of 16.3 metres (53.5 feet) occurs in Bay of Fundy, Canada, a similar range is experienced at Ungava Bay also in Canada and the United Kingdom regularly experiences tidal ranges up to 15 metres (49 feet) between England and Wales in the Bristol Channel.
What place on Earth has the greatest tidal range?
the Bay of Fundy
Located in Canada, between the provinces of Nova Scotia and Brunswick, sits the Bay of Fundy, home to the world largest tidal variations.