| Popis: |
Temperature, relative humidity and air pressure were recorded in the gallery of an underground quarry and the self-potential was recorded in the walls of the gallery. Periodical variations, with a period of the order of one minute, consistent for all sensors, were observed. They are interpreted as manifestations of oscillatory convective motions of the air of the gallery, driven by the geothermal gradient and transporting water, as well as heat, from the floor to the roof of the gallery. Some consequences of this phenomenon, common in underground cavities, are presented. |
