On Sat, 11 Aug 2007, Eric Swanson wrote: > the sea-ice in the calculations. Others have pointed out the low > tensile strength of ice, but that wasn't what I was trying to deal > with as much as the possible difference between first year and multi- > year ice in terms of motion. Using the viscous model, it would appear > obvious that the first year ice should tend to move about much more > easily than multi-year ice .
Only because its thicker, and it depends on the motion. In converging motion, yes, there will be less deformation. In diverging, the internal ice strength makes little difference. > includes ice thickness, but I think it should. As noted by Hunke and > Dukowicz, the viscosity used in the VP models extend over several orders of > magnitude, which is part of their motivation in offering their improved > model, > since their use of an elastic response speeds the computations considerably, > especially for short term transient situations. Yes, but don't forget that the E in H+D is only a computational trick, and the scientific results are (nominally) identical. -W. William M Connolley | [EMAIL PROTECTED] | http://www.antarctica.ac.uk/met/wmc/ Climate Modeller, British Antarctic Survey | 07985 935400 -- This message (and any attachments) is for the recipient only. NERC is subject to the Freedom of Information Act 2000 and the contents of this email and any reply you make may be disclosed by NERC unless it is exempt from release under the Act. Any material supplied to NERC may be stored in an electronic records management system. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups Global Change ("globalchange") newsgroup. Global Change is a public, moderated venue for discussion of science, technology, economics and policy dimensions of global environmental change. Posts will be admitted to the list if and only if any moderator finds the submission to be constructive and/or interesting, on topic, and not gratuitously rude. 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/globalchange -~----------~----~----~----~------~----~------~--~---
