Hot Water Drilling in Antarctic Firn, and Freezing Rates in Water-Filled Boreholes

Hot water drilling systems are suitable for applications in which the objective is to gain rapid access to a glacier, ice sheet or ice shelf for seismic shooting, installing temperature sensors, access hole studies or retrieving stuck core drills. The Ross Ice Shelf Project (RISP) hot water drilling...

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Bibliographic Details
Main Author: Koci, Bruce R
Other Authors: NEBRASKA UNIV LINCOLN
Format: Text
Language:English
Published: 1984
Subjects:
Machinery and Tools
*DRILLING MACHINES
ANTARCTIC REGIONS
BOILERS
BOREHOLES
DRILLING
FREEZING
HEAT EXCHANGERS
HOT WATER
ICE
RATES
ICE SHELVES
ROSS ICE SHELF
FIRN SNOW
COMPONENT REPORTS
Antarctic
Canada
Nozzle
Ross Ice Shelf
The Nozzle
Antarc*
Antarctica
Ice Sheet
Ice Shelf
Ice Shelves
Online Access:http://www.dtic.mil/docs/citations/ADP004815
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADP004815
Description
Summary:Hot water drilling systems are suitable for applications in which the objective is to gain rapid access to a glacier, ice sheet or ice shelf for seismic shooting, installing temperature sensors, access hole studies or retrieving stuck core drills. The Ross Ice Shelf Project (RISP) hot water drilling at J-9 showed that the decrease in water temperature at the nozzle was 1 C/30 m (1.8 F/100 ft) or depth. The boiler was rated at 2.5 million watts. It produced 320 l/m of water heated from 2 C to 98 C (1.75 million watts). The success of a smaller hot water system (150 kW) used by PICO in 1979-80 at Dome C, Antarctica, in ambient temperatures of -40 C illustrated the speed and reliability possible under extreme environmental conditions. This article is from 'Proceedings of the International Workshop/Symposium on Ice Drilling Technology (2nd) Held at Calgary, Alberta, Canada on 30-31 August 1982,' ADA156733, p101-103.

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