Literature Review
The Global Heat Flow Database (GHFDB) is committed to maintaining the highest standards of data quality. To achieve this, we have implemented a rigorous literature review process that ensures all datasets are thoroughly vetted before being made publicly available. To learn more about the review process and how you can contribute, please click the button below.
Ocenka teplovogo potoka po izotopam gelija v gazovom sostave podzemnyh vod Bajkal'skoj riftovoj zony i okruzhajushhih rajonov (Estimation of heat flow from helium isotopes in the gas composition of groundwater in the Baikal rift zone and surrounding areas )
Heat flow variations in a deep borehole near Sept-Iles, Québec, Canada: Paleoclimatic interpretation and implications for regional heat flow estimates
A deep (> 2000m) borehole in the Sept-lies intrusion, on the north shore of the Saint Lawrence River, in Quebec, Canada, was repeatedly logged for temperature. Systematic variations of the temperature gradient with depth are not correlated with the thermal conductivity. We interpreted the temperature profile as follows: (1) During the last glacial maximum, the temperature at the base of the ice sheet was cold (approximate to -5 degrees C); (2) When the region was below sea level, between 10 and 5ky B.P., the ground surface temperature was warm (approximate to 6 degrees C); (3) The average ground surface temperature …
Preliminary 3-D structural model from the Chicxulub impact crater and its implications in the actual geothermal regime
Heat flow measurements in the off Tokai area
Heat flow in the Trans-Hudson Orogen of the Canadian Shield: Implications for Proterozoic continental growth
Fourteen new heat flow and radiogenic heat production measurements have been obtained in the Paleo-Proterozoic Trans-Hudson Orogen of the Canadian Shield. This orogen, which consists of several distinctive belts, corresponds to a pulse of crustal growth through island arc magmatism between 1.9 and 1.8 Ga. The data now available include 17 previously published measurements. Heat flow variations that are related to the history of magmatism and internal differentiation of the belts provide constraints on the crustal assemblages in the different belts of the orogen. The average and standard deviation of heat flow values for the entire orogen, 42±11 mW m?2, …
Interpretation of heat-flow density in the Central Andes
This study focuses on the interpretation of surface heat-flow density data in the central Andes to examine possible lithospheric thermal structures. Along a profile at about 21 degrees S from the Peru-Chile trench in the west to the Andean foreland in the east, surface heat-flow density is used to constrain quantitative models that are employed to investigate the influence of various effects on the thermal field. Negligible changes in surface heat-flow density along strike of the Andean orogen, in contrast to major variations across the orogen, seem to justify the application of two-dimensional (2-D) cross-section models. The region of the …
The thermal structure and thickness of continental roots
We compare heat flow data from the Precambrian shields in North America and in South Africa. We also review data available in other less well-sampled Shield regions. Variations in crustal heat production account for most of the variability of the heat flow. Because of this variability, it is difficult to define a single average crustal model representative of a whole tectonic province. The average heat flow values of different Archean provinces in Canada, South Africa, Australia and India differ by significant amounts. This is also true for Proterozoic provinces. For example, the heat flow is significantly higher in the Proterozoic …
Variations régionales du flux géothermique au Maroc, applications
Ground-truthing 11- to 12-kHz side-scan sonar imagery in the Norwegian-Greenland Sea: Part I: Pockmarks on the Vestnesa Ridge and Storegga slide margin
Numerous small (50- to 300-m-diameter) strong-backscatter objects were imaged on the 1200- to 1350-m deep crest of Vestnesa Ridge (Fram Strait) and along the 900- to 1000-m deep northeast margin of the Storegga slide valley. Ground-truthing identified most of these objects;Is 2- to 10-m-deep pockmarks, developed within soft, acoustically stratified silty clays (typical wet bulk density: 1400-1600 kg m(-3); sound speed: 1480-1505 ms(-1); porosity, 65-75%; shear strength: 5-10 kPa; water content: 80-120%; and thermal conductivity: 0.8-0.9 W m(-1) deg C-1 in the top 3 m). Gas wipeouts, enhanced reflectors, and reflector discontinuities indicate recent or ongoing activity, but the absence …
Geothermal Measurements
Heat flow through the west coast, South Island, New Zealand
Bottom-hole temperature data collected from 24 petroleum exploration wells have been used to calculate conductive heat flow through the West Coast, South Island. Steady-state modelling suggests a mean heat flow of 76 +/- 15 mW/m(2) (20%, 1 SD), a figure higher than those obtained previously by Funnell et al. and Funnell & Allis for the southern Taranaki and southwest South Island regions (65-70 mW/m(2) and 60 +/- 4 mW/m(2), respectively). Pliocene-Quaternary erosion over much of the West Coast has probably caused an increase in measured surface heat flow of 25-30 mW/m(2). Localised areas of heat flow in excess of 90 …
Subsurface temperature variations and heat flow in the Anambra Basin
Data from sixteen deep wells drilled for oil exploration purposes in the Anambra Basin of southeastern Nigeria indicate large variations in temperature gradients and heat flow within the basin. Geothermal gradients vary between 25 and 49 +/- 1 degrees C km(-1), while heat flow estimates are in the range 48 to 76 +/- 3 mW m(-2). The highest geothermal gradients and heat flow values were computed for the wells located in the southwestern part of the basin north of Onitsha and Asaba. This part of the basin coincides with zones of thick, low conductivity sediments, low ground surface elevation, and …
Geophysical consequences of the Cordillera-Craton thermal transition in southwestern Canada
There is a pronounced increase in heat flow and lithosphere temperatures across the transition from the stable North American Craton to the southeastern Canadian Cordillera. The heat flow increases from 40-60 mW m(-2) in the Craton to 80-100 mW m(-2) in the Cordillera. There are numerous reliable heat flow data in the Cordillera but measurements in the Western Canada Sedimentary Basin overlying the adjacent Craton are in petroleum exploration wells with inherent low accuracy and are affected by hydrological effects. However, the deep thermal boundary is well defined based upon contrasts in several other temperature-sensitive geophysical parameters. The boundary is …
SW Barents Sea continental margin heat flow and Hakon Mosby Mud Volcano
The high thermal gradient and heat flow >1000 mW m(-2) on Hakon Mosby Mud Volcano are ascribed to rapid transport of pore water, mud, and gas in a narrow, deep conduit within a 3.1-km-thick glacial sediment unit. The instability is caused by rapid loading of dense glacial sediments on less dense oozes. Changes in pressure-temperature conditions by sudden, large-scale downslope mass movement may induce structural deformation, opening transient pathways from the base of the glacial sediments to the sea floor. This model may also explain slope maxima elsewhere on the margin.
Basin-scale groundwater flow and advective heat flow: an example from the northern Great Plains
High heat flow anomalies on the seaward slope of the Japan Trench (abstract)
Hydrothermal activity and the evolution of the seismic properties of upper oceanic crust
In order to investigate the impact of off-axis hydrothermal circulation on changes of the seismic properties of upper oceanic crust (layer 2A), we performed an extensive geophysical survey on the eastern flank of the East Pacific Rise at 14 degrees S. Seismic refraction and heat flow data were obtained along a 720-km-long and 25 to 40-km wide corridor, covering thinly sedimented seafloor created since 8.5 Ma. The seismic data yield a seismic velocity of similar to 2.9 km/s at the tap of 0.5-m.y.-old basement rocks. Within about 8 m.y. the velocity increases gradually to a value of mature oceanic crust …
Present Heat Flow Along a Profile Across the Western Canada Sedimentary Basin: The Extent of Hydrodynamic Influence
Rezul'taty opredeleniy teplovogo potoka v severo-zapadnoy chasti basseyna Chernogo morya (Results of heat flow determinations in the northwestern Black Sea basin)
Gas hydrate accumulation at the Håkon Mosby Mud Volcano
Gas hydrate (GH) accumulation is characterized and modeled for the Håkon Mosby mud volcano, ca. 1.5 km across, located on the Norway–Barents–Svalbard margin. Pore water chemical and isotopic results based on shallow sediment cores as well as geothermal and geomorphological data suggest that the GH accumulation is of a concentric pattern controlled by and formed essentially from the ascending mud volcano fluid. The gas hydrate content of sediment peaks at 25% by volume, averaging about 1.2% throughout the accumulation. The amount of hydrate methane is estimated at ca. 108 m3 STP, which could account for about 1–10% of the gas …