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

• Main Author: Koblents ,Ya. P.
• Other Authors: ARCTIC CONSTRUCTION AND FROST EFFECTS LAB BOSTON MASS
• Format: Text
• Language: English
• Published: 1961
• Subjects: Cartography and Aerial Photography; Snow; Ice and Permafrost; (*COASTAL REGIONS; HEIGHT FINDING); (*VISUAL SIGNALS; PROTECTION); PERMAFROST; SOILS; FROST HEAVE; RODS; USSR; *BENCH MARKS; *SEA LEVEL; TRANSLATIONS; Ice; permafrost
• Online Access: http://www.dtic.mil/docs/citations/AD0701175; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0701175

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) Trans. of Problemy Arktiki (USSR) n1 p111-113 1957, by Victor Seemann. Also available as TT-63-15688.