What about doing this across Jakobshaven and other fjords that allow ice streams to flow rapidly?
Mike On 10/1/09 9:25 AM, "Veli Albert Kallio" <[email protected]> wrote: > Dear All, > > Please find enclosed a brief satellite animation on the Robeson Channel from > this summer which suggest that use of bridge-style suspension cabling could > hold ice in place and prevent it moving into the warm waters further along the > channel between Ellesmere Island and Greenland. The link attached below which > shows the summertime ice movements. > > The shortest suspension cables would be Ellesmere - Hans Island - Greenland > each stretch about 10 kilometres in length. (The concept is to create ice > congestion behind barrier that is self-locking jam of pack ice behind cable > that remains longer in the cold waters.) > > On the negative side, the ice amount south of any successful cable barriers > will decrease. The impact of cables for boats, whales and perhaps other large > fish and wild life would also have to be addressed. After melting, the barrier > cable is lowered to the seafloor when ice is on northward move or there is a > lack of ice, the barrier is raised up to surface whenever there is ice flow > moving southward. It is also raised up to surface for the winter freeze. > > In Nunavut, the suspension cabling could help to keep the North West Passage > clear of thick sea ice floes that damage ships while preserving ice on the > north side of the channel. This might help justify such a system at least in > Nunavut. The profile of the Swalbard Islands and Franz Joseph Land could also > be enlarged by blocking the straights by cables. This would increase the ice > congestion behind these archipelagoes and decrease some sea ice escape from > the high Arctic Basin. > > I have not considered blocking of the Fram Staight due to its width, but > materially the largest amount of sea ice loss through escape will occur there. > The barriers can slow down ice movement and loss to the south due to decreases > in ice movements but if ice melts away due to warm weather behind barrier, > these measures become all but useless. > > Kind regards, > > Albert > > From: [email protected] > To: [email protected] > Subject: Greenpeace dokumentoi pohjoisen pallonpuoliskon jäätiköiden sulamista > Date: Thu, 1 Oct 2009 14:18:14 +0300 > > http://www.greenpeace.org/finland/fi/mediakeskus/lehdistotiedotteet/greenpeace > -dokumentoi-pohjoise > <http://www.greenpeace.org/finland/fi/mediakeskus/lehdistotiedotteet/greenpeac > e-dokumentoi-pohjoise> > > > > View your Twitter and Flickr updates from one place - Learn more! > <http://clk.atdmt.com/UKM/go/137984870/direct/01/> > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "geoengineering" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/geoengineering?hl=en -~----------~----~----~----~------~----~------~--~---
