|
|
Article: Dependence of Sea Ice Yield-Curve Shape on Ice Thickness
- Article from:
- Journal of Physical Oceanography
- Article date:
- December 1, 2004
- Author:
CopyrightCopyright American Meteorological Society Dec 2004. Provided by ProQuest LLC. (Hide copyright information)
|
ABSTRACT
In this note, the authors discuss the contribution that frictional sliding of ice floes (or floe aggregates) past each other and pressure ridging make to the plastic yield curve of sea ice. Using results from a previous study that explicitly modeled the amount of sliding and ridging that occurs for a given global strain rate, it is noted that the relative contribution of sliding and ridging to ice stress depends upon ice thickness. The implication is that the shape and size of the plastic yield curve is dependent upon ice thickness. The yield-curve shape dependence is in addition to plastic hardening/weakening that relates the size of the yield curve to ice thickness. In most sea ...