Here’s YouTube of it, with geese.
Here’ssome guys surfing just yards from the actual beach; you get the idea.
My question is this: Is there any river in the world that makes a tube that you can surf in? Like This.
I’d be happy to allow even man made structures.
And Yeah, I already know about those surf machines on cruise ships.
Holy Shit,I just noticed the title at around the seven second mark. :smack:
Still, the question stands 'Does anyone know of places where this occurs?
/
It looks like it ought to be just about possible with this one in China:
Ah, here you go - from about 2 minutes in on this one:
Tame by comparison, but it can happen on the Severn Bore
and (sort of) on the Eisbach in Munich
I;ll be gobsmacked.
And one on The Qiantang river in the city of Hangzhou China:
Looks like the pororoca waves on the Amazon may do this.
The tidal bores sometimes make tubes, presumably where the shape of the river floor is a bit steeper and more like a beach… , but its a one shot deal that day, you just guess the right place to be at or you miss out, and you might only see the full size tube once that year .
man made structures … well you could replicate the profile of good surfing bays in a river to turn the tidal bore into a good tube … but no one has done it. Well it would be a high maintenance thing even if you did it once.
The geese video is in a normal river flow, and there is no wave to get a tube from as simply as using shallows… The water just bumps up as a sheet rather then as a swell. To create the tube there would have to be a concave structure facing the water flow… that would focus the water back upstream to create the top of the tube… Imagine a wall built with a C profile with water flowing into its open side C <<< water flow <<<< . You need the water level to be just right … It would be serious engineering for a thing that might only be useful a week a year.
I’m not clear on what the Op meant by man made structures - whether this refers to modificaton of rivers that have a natural tide bore, or whether it also includes non-oceanic surfing in entirely artificial surf pools with huge-ass wave machines in them (the latter do exist - quite terrifying to see the way they create huge swells that turn into big waves. I guess there must be some big hydraulics behind the scenes - there’s an example here - doesn’t form much of a tube, but I’m not sure it’s been cranked to maximum capacity in that video.
I think that tubes are formed when the water gets shallow, slowing the speed of the wave. The top kind of topples over. Tidal bores can cause this. I can’t think of any surfing waves in a river that actually curls, though Buseater in the Ottawa River gets close, as do others.
Yep this one comes very close.
That definitely qualifies, I wonder how they did that.