Repeat temperature measurements in Borehole GC‐1, northwestern Utah: Towards isolating a climate‐change signal in borehole temperature profiles

Temperature‐depth profiles in borehole GC‐1, northwestern Utah, were measured in 1978, 1990, and 1992. Borehole temperatures below 80 m depth are highly reproducible over the 14 year period indicating long term thermal stability. A slowly changing temperature field above 80 m depth has similiar characteristics to synthetic temperature profiles computed from a 100 year record of air temperature changes at Park Valley weather station 50 km northeast of the borehole site.