The Global Heat Flow Database: a collaborative and fundamental revision process to ensure comprehensible and reliable heat-flow records

<p>The compilation of global heat-flow data is currently under major revision by the International Heat Flow Commission (IHFC) of the International Association of Seismology and Physics of the Earth's Interior (IASPEI). Heat flow represents a fundamental parameter in thermal studies, e.g., the evolution of hydrocarbons or mineral and geothermal resources. Comparable, comprehensible and reliable heat-flow data are of utmost interest also for geophysical and geological studies on the global scale. Here, we present the first results of a stepwise revision of the IHFC Global Heat Flow Database based on a researcher driven, collaborative approach. The first step comprises the review and revision of the most recent database structure established in 1976. The revised structure of the Global Heat Flow Database considers the demands and opportunities presented by the evolution of scientific work, digitization and the breakthroughs in database technologies over the past decades. &#160;Based on the new structure, the existing dataset will be re-assessed and new data incorporated. By supporting the ideas of FAIR and open data principles, the new database facilitates interoperability with external data services, like DOI and IGSN numbers, and other data resources (e.g., world geological map, world stratigraphic system, and International Ocean Drilling Program data). We give an overview of the new database and introduce the community workflow of global heat-flow data revision.</p>

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A new database structure for the IHFC Global Heat Flow Database

International Journal of Terrestrial Heat Flow and Applications ◽

10.31214/ijthfa.v4i1.62 ◽

2021 ◽

Vol 4 (1) ◽

pp. 1-14

Author(s):

Sven Fuchs ◽

Graeme Beardsmore ◽

Paolo Chiozzi ◽

Orlando Miguel Espinoza-Ojeda ◽

Gianluca Gola ◽

...

Keyword(s):

Heat Flow ◽

International Association ◽

Open Data ◽

Flow Data ◽

Ocean Drilling Program ◽

Data Set ◽

Data Services ◽

External Data ◽

Database Structure ◽

Starting Point

Periodic revisions of the Global Heat Flow Database (GHFD) take place under the auspices of the International Heat Flow Commission (IHFC) of the International Association of Seismology and Physics of the Earth's Interior (IASPEI). A growing number of heat-flow values, advances in scientific methods, digitization, and improvements in database technologies all warrant a revision of the structure of the GHFD that was last amended in 1976. We present a new structure for the GHFD, which will provide a basis for a reassessment and revision of the existing global heat-flow data set. The database fields within the new structure are described in detail to ensure a common understanding of the respective database entries. The new structure of the database takes advantage of today's possibilities for data management. It supports FAIR and open data principles, including interoperability with external data services, and links to DOI and IGSN numbers and other data resources (e.g., world geological map, world stratigraphic system, and International Ocean Drilling Program data). Aligned with this publication, a restructured version of the existing database is published, which provides a starting point for the upcoming collaborative process of data screening, quality control and revision. In parallel, the IHFC will work on criteria for a new quality scheme that will allow future users of the database to evaluate the quality of the collated heat-flow data based on specific criteria.

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Heat flow map and geothermal resources in Mexico

Terra Digitalis ◽

10.22201/igg.25940694.2018.2.51 ◽

2018 ◽

Vol 2 (2) ◽

Cited By ~ 8

Author(s):

Rosa Maria Prol-Ledesma ◽

Juan Luis Carrillo-de la Cruz ◽

Marco Antonio Torres-Vera ◽

Alejandra Selene Membrillo-Abad ◽

Orlando Miguel Espinoza-Ojeda

Keyword(s):

Heat Flow ◽

Gulf Of California ◽

Open Data ◽

Volcanic Belt ◽

Thermal Resistivity ◽

Transient Temperature ◽

Measured Temperature ◽

Flow Data ◽

Geothermal Resources ◽

Flow Map

Heat flow maps are a powerful tool for regional exploration of geothermal resources. Mexico is one of the main producers ofgeothermal energy and the search for undiscovered resources at a regional level should be based on heat flow values. Here, we present a heat flow map at 1:4,000,000 scale, produced with heat flow data compiled from open data bases and previously unpub-lished data. The compiled heat flow data includes bottom hole temperature, temperature logs, transient temperature measurements and measured temperature logs. The new data were calculated from temperature gradient information and estimating a mean con-ductivity value characteristic for the type of rock present in the stratigraphic column or assigning the mean conductivity value for the crust. Geothermal gradient and the thermal resistivity (inverse thermal conductivity) were plotted and heat flow was calculatedusing the Bullard method. The map covers the whole continental territory of Mexico and shows that most of the country has valueshigher than the world average. The highest heat flow values are concentrated in two provinces: the Gulf of California extensionalprovince and the Trans-Mexican Volcanic Belt.

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