HR: 11:50h
AN: C42A-07    [Abstracts]
TI: Classification of Surface Structures of Jakobshavns Isbrae Through Time and Thoughts on Recent Changes
AU: * Williams, S
C42A-07 AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO 80309-0449 United States
AU: Herzfeld, U C
EM: herzfeld@iceberg.colorado.edu
AF: Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, Boulder, CO 80309-0449 United States
AU: Mayer, H
EM: mayerh@mechanik.tu-darmstadt.de
AF: Institut fuer Mechanik III, Technische Universitaet Darmstadt, Hochschulstr. 1, Darmstadt, 64289 Germany
AB: Jakobshavns Isbrae, arguably Earth's continuously fastest-moving glacier and considered by many as the prototype of an autonomous dynamical system, has exhibited signs of rapid and accelerating retreat, starting in 1999. We combine and synoptically analyze data from our field expeditions, satellite and aerial observations to investigate this phenomenon. The mathematical focus of this presentation is the application of a newly developed tool for automated geostatistical classification of surface structures. The glaciologic objective is to describe, map and quantify regions and types of dynamic changes and ultimately to contribute to our understanding of changes in the outlet glaciers of the Greenland Ice Sheet and their possible relationship to climatic warming.
DE: 0720 Glaciers
DE: 0726 Ice sheets
DE: 0730 Ice streams
DE: 0748 Ponds
DE: 0776 Glaciology (1621, 1827, 1863)
SC: Cryosphere [C]
MN: Fall Meeting 2005