Physics
Scientific paper
Jul 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3313708f&link_type=abstract
Geophysical Research Letters, Volume 33, Issue 13, CiteID L13708
Physics
11
Global Change: Climate Variability (1635, 3305, 3309, 4215, 4513), Hydrology: Water Budgets, Hydrology: Groundwater Hydrology, Atmospheric Processes: Paleoclimatology (0473, 4900), Planetary Sciences: Solid Surface Planets: Heat Flow
Scientific paper
Subsurface temperatures have been shown to be a robust source of information on past climates. Most analyses neglect groundwater flow (GWF) and assume purely conductive heat flow. However, in many situations GWF has not been fully considered and to date there are no general GWF criteria for either accepting or rejecting a temperature profile for paleoclimate analysis. Here we examine the transition from conduction dominated environments to environments where advection has a significant effect on the subsurface temperature regime and thus ground surface temperature (GST) histories. We provide guidelines indicating when advection is important and conclude that it is unlikely that groundwater flow is a significant source of error in the global data set maintained by the International Heat Flow Commission.
Beltrami Hugo
Ferguson Grant
Woodbury Allan D.
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