CORE DRILLING THROUGH THE ANTARCTIC ICE SHEET.

The Antarctic ice sheet was penetrated by core drilling at Byrd Station during the 1967-68 austral summer. Cores 10 to 20 ft long averaging 4 1/4 in. diam were recovered over 99% of the depth. Drill cuttings were dissolved in an aqueous ethylene glycol solution circulated at the bottom of the hole a...

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Bibliographic Details
Main Authors: Ueda,Herbert T., Garfield,Donald E.
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
Format: Text
Language:English
Published: 1969
Subjects:
Snow
Ice and Permafrost
(*ICE
ANTARCTIC REGIONS)
(*GEOLOGIC AGE DETERMINATION
ICE)
DRILLING
HOISTS
DRILLS
PENETRATION
TEMPERATURE
CARBON DIOXIDE
BYRD STATION
ICE SHEETS
ICE CORES
Antarctic
Austral
Byrd
Byrd Station
The Antarctic
Antarc*
Ice
Ice Sheet
permafrost
Online Access:http://www.dtic.mil/docs/citations/AD0700998
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0700998
Description
Summary:The Antarctic ice sheet was penetrated by core drilling at Byrd Station during the 1967-68 austral summer. Cores 10 to 20 ft long averaging 4 1/4 in. diam were recovered over 99% of the depth. Drill cuttings were dissolved in an aqueous ethylene glycol solution circulated at the bottom of the hole and returned to the surface in the drill bailer on each coring run. Liquid water, indicative of pressure melting at the bottom of the ice sheet, was encountered at 7101 ft. Ice temperatures increased steadily from a minimum of -28.8 deg C at 2400 ft to -13.0 deg C at 5942 ft, where temperature measurement ceased. The heat flow for this location is estimated to be 1.8 microcal/sq cm/sec.

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