Craig Jungers wrote: > Regardless of the cause, the name, or the science; there are > unpredictably large waves that seem to be associated with long-period (5 > seconds and over) swells in the winter and spring months. If you paddle > in shallow watter exposed to the open ocean you should check for swell > periods on the offshore wave rider buoys and behave in whatever you > believe is your best interest. Craig, I'd boost that 5 seconds to 8 to 12. The wave period is pretty much always above 7-8 around here and maybe 50% of the time over 10-12. Wave energy scales as the cube of the period (more or less), so small changes in period can generate big changes in wave intensity. > One question I had is why so many of these "sneaker" wave problems seem > to occur in what is described as calm conditions. Long-period swells > must also occur on days when the wind blows, too. But maybe boaters tend > to stay farther from shoaling water when it's obviously rough. I think that is the case: it is association and perception, not "objective" observation. > Didja launch the bartender yet? Very close. Down to last minute outfitting, fueling, etc. More photos soon on this site (go to the bottom): http://www.pbase.com/bartenderdave/204_bartender_part_iii -- Dave Kruger Astoria, OR *************************************************************************** PaddleWise Paddling Mailing List - Any opinions or suggestions expressed here are solely those of the writer(s). You must assume the entire responsibility for reliance upon them. All postings copyright the author. Submissions: PaddleWise_at_PaddleWise.net Subscriptions: PaddleWise-request_at_PaddleWise.net Website: http://www.paddlewise.net/ ***************************************************************************Received on Sat Jan 19 2008 - 10:34:37 PST
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