Temperatures of shallow groundwater depend on ground surface
temperatures and water recharge temperatures. Important heat
transfer processes that contribute to groundwater temperatures are
conduction from the soil surface into the ground(water), infiltration of
warm surface water, and advection by the horizontal flow in the
aquifer. Shallow groundwater temperatures respond to ground
surface temperatures and infiltration regimes. Both of these are
modified by urban development and climate change. In this paper we
explore concepts and relationships by which shallow groundwater
temperature change can be analyzed or predicted. We estimate the
projected seasonal temperature change in an aquifer of given depth,
thickness and flow velocity (permeability) and below a vegetated
(grassy) surface when a paved surface (parking lot) of given size is
added on the ground surface. The analysis is in 2-D, and
groundwater temperatures are simulated as a function of horizontal
and vertical distance in the aquifer, and as a function of time of the
year. Results are explained and presented in a form useful for
practical applications, and examples are presented.
Taylor, Craig A.; Stefan, Heinz G..
Heating of shallow groundwater flow by conduction from a paved surface: Requirements for coldwater stream protection.
St. Anthony Falls Laboratory.
Retrieved from the University of Minnesota Digital Conservancy,
Content distributed via the University of Minnesota's Digital Conservancy may be subject to additional license and use restrictions applied by the depositor.