Difference between revisions of "Ice shelves"

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(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 -- Poison's equation on the Ross==
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==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

ROSS MESH.jpg
The lecture is here pdf

A 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

Becker, Carey, and Odin's Introductory FEM Book

Brenner and Scott's Mathematical Theory of Finite Elements