Freak waves, BBC documentary on YouTube

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barnone

Anarchist
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I don't know if you guys watched the series on discovery "The Most Dangerous Catch". There is a sequence where they are in the bridge going into some decent size regular timed swell and a rogue wave sweeps the boat and bridge from the side at amazing speed. Incredible footage as the first time I have ever seen one on film.

Oh, here it is


 
born2sail

born2sail

Super Anarchist
5,390
0
Pacific Northwest
marian said:
Sionna said:
Thanks for the link!
Very interesting stuff.
Click to expand...
Sure is, I wonder if anyone's told the Volvo guys about the Agulhas channel?
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The Agulhas current and the Cape Cauldron are well known, very.

PS: Cauldron = retroflection zone

aguilhas.gif

 
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pogen

pogen

Super Anarchist
5,092
8
SF Bay
bit of poking about on the interweb reveals this, for us that don't get BBC

Code: 
http://rapidshare.com/files/19940388/hfw.part1.rar
http://rapidshare.com/files/19940468/hfw.part2.rar
http://rapidshare.com/files/19940555/hfw.part3.rar
http://rapidshare.com/files/19940644/hfw.part4.rar
http://rapidshare.com/files/19940742/hfw.part5.rar
http://rapidshare.com/files/19940838/hfw.part6.rar
http://rapidshare.com/files/19940916/hfw.part7.rar
http://rapidshare.com/files/19940957/hfw.part8.rar


pass: calek
 
deep6

deep6

Member
324
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San Ho
Pikey said:
that just the same documentary??? before i be arsed looking/downloading it
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There was a good one on Rouge waves "last year?" that was on National Geographic or some other info TV channel, was somewhat a Dreamworks promo for the new Poseidon movie, and how they used the latest simulation to generate the wave for the movie, but had the same info about the drobner wave measuring device, but had some amazing footage of the new queen mary 2 having a window smashed out 30 meters above the water line, and the data that was collected 3 weeks before during and after the incident, they counted 40+ waves that were 20+ meters during that time limit. They also noted where there were sea mounts and bad currents that generated the most rouge waves.

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T

Theoretic

Super Anarchist
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deep6 said:
Great 5 part series on Rogue Waves, and the science behind finding, measuring, and documenting the damage of the ships that didn't go down.
http://www.youtube.com/watch?v=o8ZstKoyc9I...feature=related
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Great link for an intertainment, but it's quite unbeleavable how unscientific some people are who call themselves scientists.

Wind against current is certainly no big news at all, and the satellite measurements do not measure wave heights as they kept saying, it measures sea surface heights at the same time over an area. When a larger wavelength wave are moving to the same direction than a smaller wavelength wave it will catch up the smaller slower moving one. The result is an apparently "freak wave" which comes out of nowhere (out of the deep blue as the mariners put it) which is significantly steaper than the 2 waves individually really are. It's all about the propability of being at the wrong spot at the wrong time when the overtaking takes place. Add more than 2 waves at the same place is a bit less propable and certainly more steep & high as well. Add more than 2 and the apparent wave can very well begin breaking. All that withing the linear model, no need of quantum physics here at all. On the real oceans all the waves caused by winds do not move at the same direction either as the winds rotate around lows.

Add that little info into the linear model and it predicts all the phenomenoms that has been observed and included on that bbc program just fine. 5 waves with 6m height on averages makes the surface look like as a freak 30m high wave, not too propable, but given the vast area of oceans, that simply must happen occasionally. Really unbeleavable that not one of the persons interviewed realized that more than one wave at the same place at the same time is a very common incident and just assumed with no reason at all that there could be only one wave.

 
Koukel

Koukel

Super Anarchist
1,038
2
Portland, Oregon
Sailor2 said:
deep6 said:
Great 5 part series on Rogue Waves, and the science behind finding, measuring, and documenting the damage of the ships that didn't go down.
http://www.youtube.com/watch?v=o8ZstKoyc9I...feature=related
Click to expand...
Great link for an intertainment, but it's quite unbeleavable how unscientific some people are who call themselves scientists.

Wind against current is certainly no big news at all, and the satellite measurements do not measure wave heights as they kept saying, it measures sea surface heights at the same time over an area. When a larger wavelength wave are moving to the same direction than a smaller wavelength wave it will catch up the smaller slower moving one. The result is an apparently "freak wave" which comes out of nowhere (out of the deep blue as the mariners put it) which is significantly steaper than the 2 waves individually really are. It's all about the propability of being at the wrong spot at the wrong time when the overtaking takes place. Add more than 2 waves at the same place is a bit less propable and certainly more steep & high as well. Add more than 2 and the apparent wave can very well begin breaking. All that withing the linear model, no need of quantum physics here at all. On the real oceans all the waves caused by winds do not move at the same direction either as the winds rotate around lows.

Add that little info into the linear model and it predicts all the phenomenoms that has been observed and included on that bbc program just fine. 5 waves with 6m height on averages makes the surface look like as a freak 30m high wave, not too propable, but given the vast area of oceans, that simply must happen occasionally. Really unbeleavable that not one of the persons interviewed realized that more than one wave at the same place at the same time is a very common incident and just assumed with no reason at all that there could be only one wave.
Click to expand...

So do you believe in Schroedenger waves; single extraordinarily steep and high waves flitting about the ocean? Flushing out the linear model to include observed rogue waves wouldn't necesarily preclude another model would it?

Occasionally logical,

Koukel

 
S

st599

Member
151
0
London
pogen said:
bit of poking about on the interweb reveals this, for us that don't get BBC

Code: 
http://rapidshare.com/files/19940388/hfw.part1.rar
http://rapidshare.com/files/19940468/hfw.part2.rar
http://rapidshare.com/files/19940555/hfw.part3.rar
http://rapidshare.com/files/19940644/hfw.part4.rar
http://rapidshare.com/files/19940742/hfw.part5.rar
http://rapidshare.com/files/19940838/hfw.part6.rar
http://rapidshare.com/files/19940916/hfw.part7.rar
http://rapidshare.com/files/19940957/hfw.part8.rar


pass: calek
Click to expand...

There's talk in the UK of opening up the BBC's Archive (i.e. every TV and Radio Recording made since 1936/1922 respectively) on the internet, it'll be free in the UK but will be paid for on a per download basis elsewhere - so a 1 hour science show, in full quality would be a couple of dollars.

I'd like to see their recent Penlee lifeboat docudrama again.

 
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