Mapping of subsurface thermal conduction and convection using spatial statistics

Identification of heat transfer type is essential to geothermal exploration and reservoir mapping because thermal conductivity in water is relatively lower than in average rock materials. This study focused on mapping the two types of heat transfer in the shallow crust, conduction and convection, from a set of temperature-logging dataset, temperature gradient, thermal conductive, and volcanoes data using spatial statistics. The heat transfer type of each borehole was classified using coefficient of determination method. Threshold of 0.9 was a proper index to discriminate the two geothermal types.