ICE FLOW OVER BEDROCK PERTURBATIONS

• Main Author: Budd,W. F.
• Other Authors: DEPARTMENT OF SUPPLY MELBOURNE (AUSTRALIA) ANTARCTIC DIV
• Format: Text
• Language: English
• Published: 1970
• Subjects: Snow; Ice and Permafrost; (*GLACIERS; MOTION); DAMPING; DEFORMATION; VELOCITY; STRAIN(MECHANICS); ROCK; ANTARCTIC REGIONS; ICE CAPS; Antarctic; Antarc*; Ice; permafrost
• Online Access: http://www.dtic.mil/docs/citations/AD0708239; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0708239

The use of well known simple periodic solutions of the two-dimensional biharmonic stress equation for studying the flow over undulations of an ice mass of small surface slope is examined. The model considered is one in which most of the shear (deformation or sliding) takes place near the base and the upper part moves largely as a block, with longitudinal strain-rates varying linearly with the longitudinal stress deviations. Various predictions of the theory have been confirmed from spectral analysis of surface and bedrock profiles of ice caps. (Author) Revision of report dated 11 Aug 69.