The geothermal gradient
, which is the difference in temperature between the core of the planet and its surface, drives a continuous conduction of thermal energy in the form of heat from the core to the surface.
The major energy source for planetary decompression and for heat emplacement at the base of the crust, source of the geothermal gradient
, is the stored energy of protoplanetary compression.
Fletcher said : 'Available information suggests that the geothermal gradient
beneath Saipan may be sufficiently steep to provide geothermal energy to generate electricity.
Further analysis was conducted with a numerical model to ac count for subsurface heterogeneity, the site geothermal gradient
and the varying surface temperature.
Specific topics include the mechanics of fault distribution and localization in high-porosity sands of Provence, France; strain localization in geomaterials; the progression from damage to localization of displacement observed in laboratory testing of porous rocks; microscale damage evolution in compacting sandstone; influence of grain size and geothermal gradient
on the ductile-to-brittle transition in arenaceous sedimentary rocks; fracture aperture, length, and pattern geometry development under biaxial loading; and improved seismic identification of inter-fault damage via a linked geomechanics-seismic approach.
The borehole is sufficiently deep that the lower section of the temperature-depth profile allows a reliable determination of the geothermal gradient
, presumably free of the effects of recent climate changes.
Arcs under extension have a steep geothermal gradient
and underplating of the crust by mafic magma may transfer sufficient heat to induce anatexis.
Murphy Belt samples yielded a geothermal gradient
Several parts of the Indonesian archipelago, especially in Central Sumatra, are areas of high geothermal gradient
A 2005 work program costing in excess of US$800,000 was carried out and included a detailed E-Scan Survey, a gravity survey, and the drilling of four geothermal gradient
The expected geothermal gradient
is 2,7 deg C/10 m.
Through the combination of the DTS data and geothermal gradient
, a deep insight into the well behavior is generated, which allows operators to analyze the flow volume and changes per section.