- Global Heat Flow Data
Only in the last quarter century, however, has the establishment and growth of a global heat flow data set allowed significant geophysical and statistical interpretations of the magnitude and distribution of the heat conducted to the surface of the earth from its interior.
http://www.ngdc.noaa.gov/seg/globsys/heatflow.shtml
(Added: Fri Feb 14 2003)
- National Park Tour of Hot Springs
Hot springs are a feature of ground water systems commonly located in regions which have had, or are having, active magmatic intrusion in the subsurface heating ground water and causing geothermal activity.
http://www2.nature.nps.gov/grd/tour/hotsprin.htm
(Added: Fri Feb 14 2003)
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