# Difference between revisions of "Ice shelves"

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These slides [[Media:slides.pdf |pdf]] illustrate how ice shelves are different from grounded ice sheets. They also make a point that as everything on the Earth, ice sheets and ice shelves are much longer and wider than thicker. Derivations of the zero- and first-order stress-balance equations for ice shelves is described here [[Media:equations.pdf |pdf]]. It is strongly recommended to repeat all derivations at least one more time. The whole derivation followed a paper by Doug MacAyeal (1989) [[Media:MacAyeal89.pdf |pdf]] | These slides [[Media:slides.pdf |pdf]] illustrate how ice shelves are different from grounded ice sheets. They also make a point that as everything on the Earth, ice sheets and ice shelves are much longer and wider than thicker. Derivations of the zero- and first-order stress-balance equations for ice shelves is described here [[Media:equations.pdf |pdf]]. It is strongly recommended to repeat all derivations at least one more time. The whole derivation followed a paper by Doug MacAyeal (1989) [[Media:MacAyeal89.pdf |pdf]] | ||

− | ==FEM notes -- | + | ==FEM notes -- Poisson's equation on the Ross== |

[[Image:ROSS_MESH.jpg|left|thumb|300 px|]]The lecture is here [[Media:Quick_fem_notes.pdf |pdf]] | [[Image:ROSS_MESH.jpg|left|thumb|300 px|]]The lecture is here [[Media:Quick_fem_notes.pdf |pdf]] |

## Latest revision as of 09:34, 7 September 2009

## Contents |

## Overview

Here we're going to cover (a) where the ice-shelf equations come from, and (b) provide a brief overview of one method (the finite element method) which can be profitably applied to solve these equations.

## Ice shelves

These slides pdf illustrate how ice shelves are different from grounded ice sheets. They also make a point that as everything on the Earth, ice sheets and ice shelves are much longer and wider than thicker. Derivations of the zero- and first-order stress-balance equations for ice shelves is described here pdf. It is strongly recommended to repeat all derivations at least one more time. The whole derivation followed a paper by Doug MacAyeal (1989) pdf

## FEM notes -- Poisson's equation on the Ross

The lecture is here pdfA sample matlab script is here sample_poisson_v1.m.gz

A FEM mesh for the Ross Ice Shelf is here mesh_RIS.mat.gz

### Some FEM resources:

Mathworks's "Getting Started" with FEM site

T.J.R. Hughes' Finite Element Tome