The Flow and Fracture of Cracked Ice: Experiments to Aid Modeling

I wish to establish whether the leads that form within an anisotropic ice cover at high-latitudes develop from the growth and interaction under far-field compression of pre-existing flaws, such as thermal cracks and re-frozen leads. With this in mind, my near-term objectives are to study and underst...

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Bibliographic Details
Main Author: Schulson, Erland M
Other Authors: DARTMOUGH COLLEGE HANOVER NH THAYER SCHOOL OF ENGINEERING
Format: Text
Language:English
Published: 1998
Subjects:
Snow
Ice and Permafrost
Fluid Mechanics
Mechanics
*CRACKS
*FLOW
*FRACTURE(MECHANICS)
*SEA ICE
COMPRESSION
DUCTILE BRITTLE TRANSITION
FAR FIELD
HIGH LATITUDES
MODELS
PATTERNS
SATELLITE IMAGERY
STRAIN RATE
PREEXISTING FLAWS
THERMAL CRACKS
REFROZEN LEADS
SALINE ICE
Ice
permafrost
Sea ice
Online Access:http://www.dtic.mil/docs/citations/ADA534821
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA534821
Description
Summary:I wish to establish whether the leads that form within an anisotropic ice cover at high-latitudes develop from the growth and interaction under far-field compression of pre-existing flaws, such as thermal cracks and re-frozen leads. With this in mind, my near-term objectives are to study and understand the mechanical behavior of columnar sea ice under controlled conditions and to determine the role played by pre-existing flaws. I plan to study the compressive failure pattern on scales accessible to controlled experiments, and then to compare these patterns to those seen on satellite images. See also ADM002252.

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