http://inspire.ec.europa.eu/codelist/GeothermalPotentialValue/geothermalGradientINSPIRE Registry teamJRC-INSPIRE-SUPPORT@ec.europa.euhttp://inspire.ec.europa.eu/registry2015-08-18 17:51 PM CEST2015-08-18 17:51 PM CESTgeothermal gradientGeothermal gradient is the rate of increasing temperature with respect to increasing depth in the Earth's interior in °C/km.