Record details

    Western Canadian Sedimentary Basin temperature-depth transients from repeated well logs: evidence of recent decade subsurface heat gain due to climatic warming
    Majorowicz, J.
    Skinner, W.
    Šafanda, Jan
Publication type
    článek v odborném periodiku
Source title - serial
    Journal of Geophysics and Engineering
    Roč. 9, č. 2
    s. 127-137
    Rozsah: 11 s. : P
    Výzkumný záměr: CEZ:AV0Z30120515
Subject category
    borehole temperatures
    Canadian Prairies
    climate warming
    ground heat flux and heat gain
Abstract (in english)
   Temperature versus depth measurements in boreholes on the Canadian Prairies were originally measured some two decades ago (1987). They were repeated a decade ago and were then repeated from 2005 to 2007. Modelling of the synthetic temperature-depth transients shows that the time variation of subsurface temperature follows variations in surface air temperature (SAT). The surface-temperature increases of 0.2 and 0.4 °C are observed for time scales of one and two decades, respectively. The top of the atmosphere solar irradiance data recorded by satellite since 1978 was computed at the locations of the repeated temperature measurements to calculate a forcing signal to allow subsurface temperatures to be modelled, as previously done with SAT data.
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
Import date
    9. 12. 2013