Procedures for Removing Surface Contaminants from Deep Ice Cores.

• Main Authors: Ragone,Stephen E., Finelli,Roland
• Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
• Format: Text
• Language: English
• Published: 1972
• Subjects: Snow; Ice and Permafrost; (*GLACIERS; CONTAMINATION); ULTRASONIC RADIATION; DRILLING; REMOVAL; CLEANING; GREENLAND; ANTARCTIC REGIONS; *ICE CORES; ULTRASONIC CLEANING; Antarctic; Greenland; Antarc*; Antarctica; Ice; permafrost
• Online Access: http://www.dtic.mil/docs/citations/AD0739933; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0739933

The surfaces of the deep ice cores from Greenland and Antarctica were contaminated during drilling at concentration levels several orders of magnitude greater than those found in the uncontaminated ice. Several procedures for removing these contaminants were studied. Ultrasonic vibration followed by self-cleaning in meltwater was found to be the most effective procedure for removal of surface contamination. (Author)