Accession Number : AD0752194

Title :   The Movement and Basal Sliding of the Nisqually Glacier, Mount Rainier,

Corporate Author : WASHINGTON UNIV SEATTLE DEPT OF ATMOSPHERIC SCIENCES

Personal Author(s) : Hodge,Steven M.

Report Date : AUG 1972

Pagination or Media Count : 438

Abstract : Detailed measurements of surface velocities along the centerline of the lower Nisqually Glacier, Mount Rainier, Washington, were made on the average of every 12 days for a period of 2 days. Changes in surface velocity, surface slope, and ice thickness were calculated. Surface velocities were related to sliding velocities at the bed through a glacier flow model. It was found that internal deformation within the ice accounts for less than half of its observed surface motion. Internal deformation contributes progressively less with distance up-glacier and, near the equilibrium line, sliding probably accounts for 80-90% of the observed motion. (Author)

Descriptors :   (*GLACIERS, MOTION), (*WASHINGTON(STATE), GLACIERS), ICE, THICKNESS, VELOCITY, DEFORMATION, PERIODIC VARIATIONS, TRIANGULATION, SNOW, DENSITY, METEOROLOGICAL PHENOMENA, SHEAR STRESSES, NAVAL RESEARCH

Subject Categories : Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE