Recommendations for a U.S. Ice Coring Program (1986) / Chapter Skim
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APPENDIX B: Ice Core Drilling
APPENDIX B: Ice Core Drilling
Pages 52-59
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From page 52... ...
Shallow and intermediate coring capabilities exist today in several countries including Australia, Canada, Denmark, France, Japan, Soviet Union, Switzerland, United States and the Federal Republic of Germany (Table 1)
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From page 53... ...
115 Japan X 143 X 148 105 105 Soviet Union X 2000+ 110 Switzerland X 300 75? West Germany X 100 75
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From page 54... ...
Diameter (cm) PICO Lightweight Auger 20-m System A 2 50-m System B 5 Manual Coring Auger 50 7.6 10.0 15.0 NSF-Swiss Drill 1 Electromechanical 115 7.6 PICO 4-Inch Drill 6 Electromechanical 353 10.0 500 l PICO Thermal Drill 1 Electrothermal 312 40002 8.7 PICO Hot Water Drill 1 Hot H2O 220 30.0 Hole 5002 Temperature Logger 1 Logging Instrument Dry Hole Any Size 300 Borehole Borehole Instrumen- 1 Logging Instrument No 20.0 Maximum tation Package Limit Borehole Diameter B
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From page 55... ...
shallow and intermediate drills currently in the PICO inventory can be used in remote areas of the world and are capable of being backpacked, if required. In the development and use of deep ice core drill technology, the United States was the undisputed leader in the mid-1960s with the success of the Electrodrill in obtaining a deep core to 1390 m through ice and into sub-ice material at Camp Century (Ueda and Garfield, 1968)
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From page 56... ...
The Soviet Union has also concentrated mainly on developing deep thermal coring devices. Their thermal drills operating at Vostok Station, Antarctica, are approaching the deep ice coring record set by the United States in 1968 at Byrd Station.
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From page 57... ...
This system could be designed to take core at intervals if necessary. A STEPPED PROGRAM FOR DRILL DEVELOPMENT We recommend an integrated approach to ice core drilling and drill development in the United States The equipment and techniques for reliably drilling shallow and intermediate depth cores already exists in the U.S.
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From page 58... ...
The second phase would be to extend the depth capability to the 4000 m range, develop the capability of coring into sub-ice material, and improve the borehole logging instrumentation package. Cooperation among core users and drilling engineers on a national and international basis is essential to ensure the successful and timely development of deep ice core drilling capability in the United States and the provision of core samples and other data that best benefit the scientific community.
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From page 59... ...
1977. Ross Ice Shelf Project drilling, October-December 1976.
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