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Article Dans Une Revue Tectonophysics Année : 2023

Quality-assurance of heat-flow data: The new structure and evaluation scheme of the IHFC Global Heat Flow Database

1 GFZ - German Research Centre for Geosciences - Helmholtz-Centre Potsdam
2 Fachbereich Geowissenschaften [Bremen]
3 GSJ - Geological Survey of Japan
4 Department of Geosciences and Geography [Helsinki]
5 RUB - Ruhr University Bochum = Ruhr-Universität Bochum
6 Institute for Geology, Mineralogy, and Geophysics [Bochum, Germany]
7 IGG - CNR Istituto di Geoscienze e Georisorse
8 IG / CAS - Institute of Geophysics of the Czech Academy of Sciences
9 INCIT-UMSNH - Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de Hidalgo
10 IGME-CSIC - Geological and Mining Institute of Spain [Espagne]
11 Institute of Geophysics ETHZ [Zurich]
12 DEÜ - Dokuz Eylül Üniversitesi = Dokuz Eylül University [Izmir]
13 Department of Geophysical Engineering [Izmir]
14 LNEG - Laboratório Nacional de Energia e Geologia
15 Departamento de Geologia CICESE
16 Department of Geoscience [Aarhus]
17 iSTeP - Institut des Sciences de la Terre de Paris
18 IGG - Institute of Geology and Geophysics [Beijing]
19 Department of Geology [Tartu]
20 GeoZS - Geological Survey of Slovenia
21 IOCAS - CAS Institute of Oceanology
22 School of Geography and Ocean Science
23 OSU - Oregon State University
24 Geothermal Laboratory [SMU, Dallas]
25 School of Geography, Earth and Atmospheric Sciences [Melbourne]
26 DISTAV - Dipartimento di Scienze della Terra dell'Ambiente e della Vita
27 Chevron Technical Center [Houston]
28 Chevron Technical Center [San Ramon, CA, USA]
29 Continental Shelf Project
30 GNS Science
31 PSU - Prince of Songkla University
32 Faculty of Science, Prince of Songkla University
33 Dipartimento di Fisica e Geologia [Perugia]
34 DISTAV - Dipartimento di Scienze della Terra dell'Ambiente e della Vita
Rob Funnell
  • Fonction : Auteur

Résumé

Since 1963, the International Heat Flow Commission has been fostering the compilation of the Global Heat Flow Database to provide reliable heat-flow data. Over time, techniques and methodologies evolved, calling for a reorganization of the database structure and for a reassessment of stored heat-flow data. Here, we provide the results of a collaborative, community-driven approach to set-up a new, quality-approved global heat-flow database. We present background information on how heat-flow is determined and how this important thermal parameter could be systematically evaluated. The latter requires appropriate documentation of metadata to allow the application of a consistent evaluation scheme. The knowledge of basic data (name and coordinates of the site, depth range of temperature measurements, etc.), details on temperature and thermal-conductivity data and possible perturbing effects need to be given. The proposed heat-flow quality evaluation scheme can discriminate between different quality aspects affecting heat flow: numerical uncertainties, methodological uncertainties, and environmental effects. The resulting quality codes allow the evaluation of every stored heat-flow data entry. If mandatory basic data are missing, the entry is marked accordingly. In cases where more than one heat-flow determination is presented for one specific site, and all of them are considered for the site, the poorest evaluation score is inherited to the site level. The required data and the proposed scheme are presented in this paper. Due to the requirements of the newly developed evaluation scheme, the database structure as presented in 2021 has been updated and is available in the appendix of this paper. The new quality scheme will allow a comprehensible evaluation of the stored heat-flow data for the first time.
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insu-04188114 , version 1 (25-08-2023)

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Sven Fuchs, Ben Norden, Florian Neumann, Norbert Kaul, Akiko Tanaka, et al.. Quality-assurance of heat-flow data: The new structure and evaluation scheme of the IHFC Global Heat Flow Database. Tectonophysics, 2023, 863, ⟨10.1016/j.tecto.2023.229976⟩. ⟨insu-04188114⟩
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