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.
South-Ukrainian monocline, Scythian plate, Black sea
D:L-Amino Acid Modeling Reveals Fast Microbial Turnover of Days to Months in the Subsurface Hydrothermal Sediment of Guaymas Basin
We investigated the impact of temperature on the microbial turnover of organic matter (OM) in a hydrothermal vent system in Guaymas Basin, by calculating microbial bio- and necromass turnover times based on the culture-independent D:L-amino acid model. Sediments were recovered from two stations near hydrothermal mounds (<74°C) and from one cold station (<9°C). Cell abundance at the two hydrothermal stations dropped from 10<sup>8</sup> to 10<sup>6</sup> cells cm<sup>-3</sup> within ∼5 m of sediment depth resulting in a 100-fold lower cell number at this depth than at the cold site where numbers remained constant at …
The Sudbury Huronian heat flow anomaly, Ontario, Canada
New measurements of the surface heat flux and radiogenic heat production in deep boreholes at 8 different sites are added to 10 older data to determine the heat flow field around the Sudbury basin, Ontario, Canada. This structure straddles the boundary between the Archean Superior Province to the North and the PaleoProterozoic Southern Province to the South, which terminates against the Grenville Front. The structure, that includes the Sudbury Igneous Complex (SIC), was created by a meteorite impact ca. 1.85 Ga. The mean value of the heat flux (50 mW m(-2)) is higher than that for the Superior Province (40 …
Systematic heat flow measurements across the Wagner Basin, northern Gulf of California
A primary control on the geodynamics of rifting is the thermal regime. To better understand the geodynamics of rifting in the northern Gulf of California we systematically measured heat-flow across the Wagner Basin, a tectonically active basin that lies near the southern terminus of the Cerro Prieto fault. The heat flow profile is 40 km long, has a nominal measurement spacing of ∼1 km, and is collocated with a seismic reflection profile. Heat flow measurements were made with a 6.5-m violin-bow probe. Although heat flow data were collected in shallow water, where there are significant temporal variations in bottom water …
Update and review of heat flow measurements in México
The main objective of this study is to report an update of the surface heat flow database of México. To our knowledge, this work is the first data compilation that integrates existing published and unpublished measurements to create a new heat flow map using a variety of data sources from 108 sites (transient borehole temperatures and temperature-depth profiles). Heat flow measurements in México are still relatively sparse. Updates of heat flow and geological data is required for a better understanding of the thermal regime of México, an accurate characterization of heat flow provinces, and to create a consistent geothermal map. …
Analiz I chislennoe modelirovanie potencialnyikh polei na severo-vostoke Barenceva morya (Analysis and numerical modeling of potential fields in the north-east of the Barents Sea )
Heat flow mapping, Stavely Region, Victoria: Victorian Geothermal Atlas Report 4
Temperature Limit of the Deep Biosphere off Muroto, Proceedings of the International Ocean Discovery Program
Special features of heat flow in transform faults of the North Atlantic and Southeast Pacific
The paper reports on the morphostructure and heat flow in zones of transform faults of the North Atlantic and the Southeast Pacific, focusing on the fundamental difference between heat flow in active and inactive parts of the faults. In the active parts, which are located between segments of the mid-ocean ridge (MOR), the measured heat flow is close to that observed in the rift zones of MORs. The heat flow is considered a joint effect of the thermal conductivity of the oceanic crust and convective heat and mass transfer by thermal waters inside the oceanic crust. In the inactive parts …
Geothermal flux and basal melt rate in the Dome C region inferred from radar reflectivity and heat modelling
Seismotectonics of the Horseshoe Abyssal Plain and Gorringe Bank, eastern Atlantic Ocean: Constraints from ocean bottom seismometer data
Abstract At the eastern end of the Azores-Gloria transform fault system to the southwest of Portugal, the plate boundary between Africa and Iberia is a region where deformation is accommodated over a wide tectonically active area. The region has unleashed large earthquakes and tsunamis, including the Mw 8.5 Great Lisbon earthquake of 1755. Although the source region of the 1755 earthquake is still disputed, most proposals include a source location in the vicinity of the Horseshoe Abyssal Plain (HAP), which is bounded by the 5000 m high Gorringe Bank (GB). In this study we characterize seismic activity in the region …
Traçage thermique et géochimique des systèmes hydrothermaux : Exemple d'un domaine océanique jeune et d'une marge continentale
Hydrothermal processes affect all oceanic domains therby controlling their thermal regime. At global scale, heat flow studies may lead to different interpretations than local studies. Comparing hydrothermal effects in different local contexts is essential to overcome this scale-issues. To do so, we studied the hydrothermal impact on the thermal regimes of a young oceanic domain (Atlantic Ocean) and a young margin (South Balearic). We quantified heat and matter transfers and heat losses with heat flow measurements and pore water chemical analyses. The young oceanic domain is situated on the first segment south of Oceanographer transform fault in the Atlantic Ocean. …
Trial deployment of a surface heat flow probe over the Los Azufres geothermal region, Mexico
Heat flow mapping, Werribee region, Victoria: Victorian Geothermal Atlas Report 5
Spatially Variable Geothermal Heat Flux in West Antarctica: Evidence and Implications
Abstract Geothermal heat flux (GHF) is an important part of the basal heat budget of continental ice sheets. The difficulty of measuring GHF below ice sheets has directly hindered progress in the understanding of ice sheet dynamics. We present a new GHF measurement from below the West Antarctic Ice Sheet, made in subglacial sediment near the grounding zone of the Whillans Ice Stream. The measured GHF is 88 ± 7 mW m−2, a relatively high value compared to other continental settings and to other GHF measurements along the eastern Ross Sea of 55 mW m−2 and 69 ± 21 mW …
TEPLOVOE POLE OHOTOMORSKOGO REGIONA (Heat Field of the Sea-Sea Region )
Analysis of a conductive heat flow profile in the Ecuador Fracture Zone
We report 18 new conductive heat flow measurements collected from a sediment pond located in the inactive part of the Ecuador Fracture Zone in the Panama Basin. The data were collected along an east-west transect coincident with a multi-channel seismic reflection profile that extends from ODP Hole 504B to west of the sediment pond. Conductive models indicate that heat flow should decrease from approximate to 400 mW m(-2) on the 1.5 Ma western plate to approximate to 200 mW m(-2) on the 6 Ma eastern plate; however the observed heat flow increases nearly linearly toward the east from approximately 140 …
Geothermal heat flux in the Amundsen Sea sector of West Antarctica: New insights from temperature measurements, depth to the bottom of the magnetic source estimation, and thermal modeling
Focused research on the Pine Island and Thwaites glaciers, which drain the West Antarctic Ice Shelf (WAIS) into the Amundsen Sea Embayment (ASE), revealed strong signs of instability in recent decades that result from variety of reasons, such as inflow of warmer ocean currents and reverse bedrock topography, and has been established as the Marine Ice Sheet Instability hypothesis. Geothermal heat flux (GHF) is a poorly constrained parameter in Antarctica and suspected to affect basal conditions of ice sheets, i.e., basal melting and subglacial hydrology. Thermomechanical models demonstrate the influential boundary condition of geothermal heat flux for (paleo) ice sheet …
Thermophysical parameters and lithospheric thermal structure in Guide Basin, Northeast Qinghai–Tibet Plateau
Comprehensive knowledge in lithospheric thermal structure and subsurface temperature distribution is indispensable for the research and utilization of geothermal resources. This paper studies the characteristics of heat generation rate and heat conductivity of shallow rocks and deep rocks encompassing Guide Basin by sampling, measuring, data collection and analysis, establishes the conceptual model of its lithospheric thermal structure. The research shows that the mantle heat flow of Guide Basin is about 35 mW/m2, and the ratio of crust heat flow to mantle heat flow is 1.2. With the one-dimensional steady-state thermal conduction formula, the temperature at different depth is calculated in …
Heat flow, heat production, and crustal temperatures in the Archaean Bundelkhand craton, north-central India: Implications for thermal regime beneath the Indian shield
Abstract Heat flow and heat production data sets constrain the crustal thermal structure in the 2.5–3.5 Ga Bundelkhand craton, the oldest cratonic core in northern Indian shield, for the first time and allow comparisons with the southern Indian shield. Temperature measurements carried out in 10 boreholes at five sites in the craton, combined with systematic thermal conductivity measurements on major rock types, yield low heat flow in the range of 32–41 mW m−2, which is distinct from the generally high heat flow reported from other parts of the northern Indian shield. Radioelemental measurements on 243 samples of drill cores and …