Document Type
Article
Publication Title
Journal of Glaciology
Publisher
International Glaciological Society
Publication Date
2004
Volume
50
Issue
171
Disciplines
Computer Sciences
Abstract
The floating terminal of Jakobshavn Isbræ, the fastest Greenland ice stream, has disintegrated since 2002, resulting in a doubling of ice velocity and rapidly lowering inland ice elevations. Conditions prior to disintegration were modeled using control theory in a plane-stress solution, and the Missoula model of ice-shelf flow. Both approaches pointed to a mechanism that inhibits ice flow and that is not captured by either approach. Jamming of flow, an inherent property of granular materials passing through a constriction (Jakobshavn Isfjord), is postulated as the mechanism. Rapid disintegration of heavily crevassed floating ice accompanies break-up of the ice jam.
DOI
10.3189/172756504781829729
Recommended Citation
Johnson, Jesse V.; Prescott, Paul R.; and Hughes, Terence J., "Ice Dynamics Preceding Catastrophic Disintegration of the Floating Part of Jakobshavn Isbræ, Greenland" (2004). Computer Science Faculty Publications. 1.
https://scholarworks.umt.edu/cs_pubs/1
Comments
© 2004, International Glaciological Society. View original published article at 10.3189/172756504781829729 .