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・ River Valley, Singapore
・ River Vartry
・ River Ver
・ River View Cemetery (Aurora, Indiana)
・ River Styx, Ohio
・ River Subaya
・ River Subdivision
・ River Subdivision (Canadian Pacific Railway)
・ River Subdivision (CSX Transportation)
・ River Suck
・ River Suir
・ River Suir Bridge
・ River Suite for Two Guitars
・ River Sulby
・ River Sullane
River surfing
・ River Swale
・ River Swarbourn
・ River Swift
・ River Swilgate
・ River Swilly
・ River Swincombe
・ River Syfynwy
・ River systems of Thailand
・ River Taf
・ River Taff
・ River Tall
・ River Tam
・ River Tamar
・ River Tame


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River surfing : ウィキペディア英語版
River surfing

River surfing is the sport of surfing either standing waves or tidal bores in rivers. Claims for its origins include a 1955 ride of 1.5 miles along the tidal bore of the River Severn.〔("The place, the River Severn - the birth place of bore surfing." )〕
River surfing on standing waves has been documented as far back as the early-1970s in Munich, Germany, today offering the world's largest urban surfing spot.
==Standing waves==
In this type of river surfing, the wave is stationary on the river, caused by a high volume of water constricted by flowing over a rock and creating a wave behind. It is a form of hydraulic jump. A river surfer can face up-stream and catch this wave and have the feeling of traveling fast over water while not actually moving.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「River surfing」の詳細全文を読む



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