Accession Number : AD0699327

Title :   THE EFFECT OF DISTURBANCE ON PERMAFROST TERRAIN.

Descriptive Note : Special rept.,

Corporate Author : COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H

Personal Author(s) : Brown,Jerry ; Rickard,Warren ; Vietor,Donald

Report Date : NOV 1969

Pagination or Media Count : 18

Abstract : The influence of surface cover on thaw penetration in alpine and arctic soils of Alaska was determined. Several manipulated treatments were employed: removal of all vegetation, mulching, shearing and fire. Thaw and subsidence more than doubled on the bare and sheared plots and increased up to 50% on the burned areas. Bulldozing of and traffic over ice-rich permafrost terrain resulted in considerable erosion and thaw. (Author)

Descriptors :   (*PERMAFROST, STRESSES), (*SOILS, EROSION), DEGRADATION, ICE, MELTING, DRAINAGE, FOUNDATIONS(STRUCTURES), CRACKS, BUILDINGS, PLANTS(BOTANY), SWAMPS, BULLDOZERS, DAMAGE, PENETRATION, TERRAIN, FIRES, ALASKA

Subject Categories : Soil Mechanics
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE