Global map of solid Earth surface heat flow
Article first published online: 19 OCT 2013
©2013. American Geophysical Union. All Rights Reserved.
Geochemistry, Geophysics, Geosystems
Volume 14, Issue 10, pages 4608–4622, October 2013
How to Cite
2013), Global map of solid Earth surface heat flow, Geochem. Geophys. Geosyst., 14, 4608–4622, doi:10.1002/ggge.20271.(
- Issue published online: 26 NOV 2013
- Article first published online: 19 OCT 2013
- Accepted manuscript online: 24 SEP 2013 12:00AM EST
- Manuscript Accepted: 15 SEP 2013
- Manuscript Revised: 13 SEP 2013
- Manuscript Received: 21 MAY 2013
- heat flow;
- heat flux;
 A global map of surface heat flow is presented on a 2° × 2° equal area grid. It is based on a global heat flow data set of over 38,000 measurements. The map consists of three components. First, in regions of young ocean crust (<67.7 Ma) the model estimate uses a half-space conduction model based on the age of the oceanic crust, since it is well known that raw data measurements are frequently influenced by significant hydrothermal circulation. Second, in other regions of data coverage the estimate is based on data measurements. At the map resolution, these two categories (young ocean, data covered) cover 65% of Earth's surface. Third, for all other regions the estimate is based on the assumption that there is a correlation between heat flow and geology. This assumption is assessed and the correlation is found to provide a minor improvement over assuming that heat flow would be represented by the global average. The map is made available digitally.