Heat Transfer Characteristics of Melting and Refreezing a Drill Hole through an Ice Shelf in Antarctica

• Main Authors: Yen,Yin-Chao, Tien,Chi
• Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER N H
• Format: Text
• Language: English
• Published: 1976
• Subjects: Snow; Ice and Permafrost; *ICE PENETRATION; *ICE OPENINGS; HEAT TRANSFER; FREEZING; HOLES(OPENINGS); MELTING; ANTARCTIC REGIONS; DRILLING; DRILLS; Antarctic; Antarc*; Antarctica; Ice; Ice Shelf; permafrost
• Online Access: http://www.dtic.mil/docs/citations/ADA026368; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA026368

The heat transfer processes associated with melting and refreezing a drill hole 500 m in depth and 0.150 m in initial radius through an ice shelf were approximately analyzed. The results were expressed in graphical form showing the time available for experimentation under the hole as a function of heating duration and heating strength. It was found that the refreezing of the drill hole had a much slower rate than the melting of the hole. (Author)