Re: [geo] Ocean waves influence sea ice extent

2014-05-30 Thread Fred Zimmerman
Why not try to increase the duration and intensity of polar storms? We've already got a good start on that with the massive ongoing global effort to increase the intensity and frequency of extreme weather events. Seriously, it baffles me that sometimes it seems that the response here to every new

RE: [geo] Ocean waves influence sea ice extent

2014-05-30 Thread Peter Flynn
My thought: thicken the ice by pumping water from under the ice to the top during the winter, using barge mounted pumps powered by wind generated electricity. Stronger, more mass, hence slower to melt. Peter Peter Flynn, P. Eng., Ph. D. Emeritus Professor and Poole Chair in Management for En

Re: [geo] Ocean waves influence sea ice extent

2014-05-30 Thread Stephen Salter
Andrew The stress concentration factor of a slit is even higher than for a round hole. Unless you are in very shallow water there is quite a wide spread of wave directions. Stephen Emeritus Professor of Engineering Design. School of Engineering. University of Edinburgh. Mayfield Road. Edinb

Re: [geo] Ocean waves influence sea ice extent

2014-05-30 Thread Andrew Lockley
You would likely use slits perpendicular to the direction of travel of the wave, not round holes. These would quickly attenuate wave energy, and may also help build ice by flooding the surface. A On 30 May 2014 09:46, "Stephen Salter" wrote: > Andrew > > Making a round hole in a plate increases

Re: [geo] Ocean waves influence sea ice extent

2014-05-30 Thread Stephen Salter
Andrew Making a round hole in a plate increases the adjacent stress by a factor of three so this is a really great way to assist breakup. The single frequency observation is because that part of the wave spectrum has a phase velocity which coincides with the velocity of the flexure wave in t