scholarly journals Borehole Temperature Measuring Equipment and the Geothermal Flux in Tasmania

1953 ◽  
Vol 6 (4) ◽  
pp. 480 ◽  
Author(s):  
G Newstead ◽  
A Beck
Keyword(s):  
Heat Flux ◽  
Measuring Equipment ◽  
Bridge Circuit ◽  
Temperature Measurements ◽  
Temperature Measuring ◽  
A Value ◽  
Borehole Temperature ◽  
Geothermal Flux

An instrument, using a thermistor and an A.C. bridge circuit, is described by which temperature measurements in boreholes can be made to 0�01 �C. Results of temperature measurements in Tasmania are given and a value of 2 cal cm?2 sec?1 is obtained for the heat flux (uncorrected for recent glaciation).

Flow, thermal structure, and subglacial conditions of a surge-type glacier

1984 ◽  
Vol 21 (2) ◽  
pp. 232-240 ◽  
Author(s):  
Garry K. C. Clarke ◽  
Sam G. Collins ◽  
David E. Thompson
Keyword(s):  
Energy Source ◽  
Heat Flux ◽  
Thermal Structure ◽  
Drainage System ◽  
Temperature Measurements ◽  
Bottom Temperature ◽  
Water Percolation ◽  
Geothermal Flux

Temperature measurements in a subpolar surge-type glacier reveal a distinctive thermal structure associated with the boundary between the ice reservoir and receiving areas. In the receiving area the glacier is cold based, but bottom temperature has increased as much as 0.5 °C between 1981 and 1982, and the basal heat flux is roughly 10 times the expected geothermal flux. Water percolation through permeable subglacial material is the probable energy source. Deformation of the substrate could destroy this drainage system and trigger a surge.

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