Abstract
It is generally recognized that the temperature profile in a borehole is influenced by both groundwater flow and past climatic change. Geophysicists seek to remove such effects from a temperature profile for the corrections of heat flow values. It is also well known by hydrogeologists that the distribution of subsurface temperature is affected by groundwater flow and that temperature data can be used to estimate the direction and velocity of groundwater flow. Until present, there are few studies dealing simultaneously with both effects. This workshop provides a review of the literature dealing with the effects of groundwater flow and past climatic change on the subsurface thermal regime. Then, temperature profiles and the distribution of temperature inversions in Japan, Germany and China are analyzed and presented as examples showing both effects as well as the effects of surface warming owing to urbanization.
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