Accession Number : AD0701175

Title :   PROTECTION OF BENCH MARKS AT POLAR GAGING STATIONS (O Sokhranenii Otmetok Nulei Vodomernykh Postov na Polyarnykh Stantsiyakh).

Corporate Author : ARCTIC CONSTRUCTION AND FROST EFFECTS LAB BOSTON MASS

Personal Author(s) : Koblents ,Ya. P.

Report Date : 1961

Pagination or Media Count : 7

Abstract : Bench-mark damage in polar regions associated with permafrost and ground ice is analyzed, and proper construction methods are discussed. A metal pipe about 60 mm in diameter, with a disk about 150 mm in diameter welded on the lower end, is not liable to destruction or change in elevation when the disk is placed at a depth equal to three times the thickness of the active layer. (Author)

Descriptors :   (*COASTAL REGIONS, HEIGHT FINDING), (*VISUAL SIGNALS, PROTECTION), PERMAFROST, SOILS, FROST HEAVE, RODS, USSR

Subject Categories : Cartography and Aerial Photography
      Snow, Ice and Permafrost

Distribution Statement : APPROVED FOR PUBLIC RELEASE