References
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High Heat-Flow Anomaly around Hatsushima Biological Community in the Western Sagami Bay, Japan
Heat flow values have been determined at sites that are densely distributed around biological communities located along a topographic inflection line to the southeast of Hatsushima Island in the western Sagami Bay through four research cruises since 1988. Anomalously high heat flow values up to 2,000 mW/m2 were observed at the largest community, where a high methane content anomaly had been found indicating fluid venting activity. Within 1 km of the inflection line, which is presumed to be a surface expression of an active fault, heat flow values are high and variable (about 400 mW/m2), whereas they are low and …
Catalogue of Heat Flow Density Data: Denmark
Terrestrial heat flow in Kamchatka
Catalogue of Heat Flow Density Data: United Kingdom
Wellbore Heat-Flow from the Toa-Baja Scientific Drillhole, Puerto-Rico
Heat Flow values, determined from temperature logs and estimates of thermal conductivity from geophysical logs range from 23 to 37 mW/m2 from 800 to 2500 m depth in the Toa Baja scientific drillhole on the north, central coast of Puerto Rico. Near the target seismic reflector at the base of the well, an active hydrothermal system was encountered in which heat flow of up to 90 mW/m2 was found in a mineralized zone beneath a volcanic sill or flow. The heat flow then dropped to 50 mW/m2 beneath this subhorizontal flow zone. The mining of heat from downdip is proposed …
Catalogue of Heat Flow Density Data: Italy
A detailed study of heat flow at the Fifth Water Site, Utah, in the Basin and Range-Colorado Plateaus transition
A detailed heat flow study has been conducted at a site in the southern Wasatch Mountains, Utah, in the thermal transition between the Colorado Plateau and Basin and Range tectonic provinces of the western U.S.A. Two wells, 600 m deep and only 400 m apart, in rugged terrain provided constraints on topographic and microclimatic effects and helped demonstrate the efficacy but also some inadequacies of commonly used heat flow corrections. Microclimatic effects changed the subsurface thermal gradients by up to 6%; atmospheric temperature lapse, insolation and vegetation all contribute about equally to the subsurface effects. The topographic disturbance decreased gradients …
Jevoljucija temperaturnogo polja osadochnogo chehla severnoj chasti Zapadno-Sibirskoj plity (Evolution of the temperature field of the sedimentary cover in the northern part of the West Siberian plate )
Basic characteristics of geotemperature distribution in China
teplogeneracija gornyh porod i radiogennoe teplo pribajkal'ja i zabajkal'ja (Heat Production of Rocks and Radiogenic Heat of the Pibaikalya and Transbaikalya )
Geothermal characteristics and deep thermal structure of Yunnan area, SW China (in Chinese with English abstract)
Estimating Thermal Conductivity in Sedimentary Basins Using Lithologic Data and Geophysical Well Logs1
A method for estimating in-situ thermal conductivity profiles in oil and gas wells is advanced to rectify a major shortcoming in thermal analyses of sedimentary basins. Thermal conductivity estimates are made in a two-stage procedure and are based on a model for the conductivity of mixtures and input data from lithological and geophysical logs. First, rock matrix conductivity for an arbitrary depth interval (i.e., drill cuttings sample interval, which is about 3 m) is determined from the laboratory-calibrated conductivities and volumetric representation of its individual lithologic components using a geometric mean model. In-situ conductivity is then estimated by a second …
Contrasting geothermal regimes of the Barbados Ridge accretionary complex
Terrestrial Heat-Flow in East and Southern Africa
We report 26 new heat flow and 13 radiogenic heat production measurements from Zimbabwe, Zambia and Tanzania, together with details and some revisions of 18 previous heat flow measurements by other investigators from Kenya and Tanzania. These measurements come from Archean cratons, Proterozoic mobile belts, and Mesozoic and Cenozoic rifts. Heat flow data from eight new sites in the Archean Zimbabwe Craton are consistent with previous measurements in the Archean Kaapvaal-Zimbabwe Craton and Limpopo Belt (Kalahari Craton) and do not change the mean heat flow of 47±2 mW m?2 (standard error of the mean) in the Kalahari Craton based on …
Deep Subpermafrost Thermal Regime in the Mackenzie Delta Basin, Northern Canada - Analysis from Petroleum Bottom-Hole Temperature Data
Some aspects of the geophysical regime of Egypt in relation to heat flow, ground water and microearthquakes
Heat flow measurements in the southern and middle Okinawa Trough on R/V Sonne in 1988
Geothermal gradients and heat flow trends in Morocco
The paper presents a map of the main trends of heat flow density in Morocco. The average thermal gradients are also drawn for each major geological unit. The highest anomaly is observed in north-eastern Morocco, with a gradient of 30–40°C km−1 and a HFD of 70–110 mW m−2. In the south, the Atlantic margin presents a gradient of 23–34°C km−1 and a HFD of 65–85 mW m−2. The Saharan coastal basins show a gradient of 20–30°C km−1 and a HFD of 60–90 mW m−2, finally, in the Tindouf basin, the average gradient and HFD are, respectively, 20–34°C km−1 and 70–100 …