The global heat flow data set has been turned over to the US National Geophysical Data Center (NGDC) for distribution. Click on HERE to ftp the data set from NGDC.
Please be noted that the data set requires approximately 2,297,930 bytes when uncompressed. If you have any difficulty in downloading or uncompressing the data set from NGDC, please send Shaopeng Huang an e-mail at shaopeng@umich.edu. He will be glad to make the electronic file available at their site for you to ftp it.
William D. Gosnold of the University of North Dakota has been appointed as interim custdodian of the global heat flow density compilation. He has converted the global heat flow data set to spreadsheet format (Microsoft Excel) and stored it on a server at the University of North Dakota.
This map shows color-coded contours of the global distribution of heat flow at the surface of the Earth's crust. Major plate boundaries and continent outlines are also shown. The fundamental data embodied in this map are the more than 24,000 field measurements in both continental and oceanic terrains, supplemented by estimates of the heat flow in the unsurveyed regions. The estimates are based on empirically determined charactersitic values for the heat flux in various geological and tectonic settings. Observations of the oceanic heat flux have been corrected for heat loss by hydrothermal circulation through the oceanic crust. The global data set so assembled was then subjected to a spherical harmonic analysis. The map is a representation of the heat flow to spherical harmonic degree and order 12.
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