Global thermal spring distribution and relationship to endogenous and exogenous factors

G. Tamburello (), G. Chiodini, G. Ciotoli, M. Procesi, D. Rouwet, L. Sandri, N. Carbonara and C. Masciantonio
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G. Tamburello: Istituto Nazionale di Geofisica e Vulcanologia, sezione di Bologna
G. Chiodini: Istituto Nazionale di Geofisica e Vulcanologia, sezione di Bologna
G. Ciotoli: Consiglio Nazionale delle Ricerche, Istituto di Geologia Ambientale e Geoingegneria
M. Procesi: Istituto Nazionale di Geofisica e Vulcanologia
D. Rouwet: Istituto Nazionale di Geofisica e Vulcanologia, sezione di Bologna
L. Sandri: Istituto Nazionale di Geofisica e Vulcanologia, sezione di Bologna
N. Carbonara: Università degli Studi di Bologna
C. Masciantonio: Università degli Studi di Bologna

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Here we present digitization and analysis of the thermal springs of the world dataset compiled by Gerald Ashley Waring in 1965 into a collection of analog maps. We obtain the geographic coordinates of ~6,000 geothermal spring areas, including complementary data (e.g., temperature, total dissolved solids, flow rate), making them available in electronic format. Using temperature and flow rate, we derive the heat discharged from 1483 thermal spring areas (between ~10−5 and ~103 MW, with a median value of ~0.5 MW and ~8300 MW in total). We integrate this data set with other global data sets to study the relationship between thermalism and endogenous and exogenous factors with a supervised machine learning algorithm. This analysis confirms a dominant role of the terrestrial heat flow, topography, volcanism and extensional tectonics. This data set offers new insights and will boost future studies in geothermal energy exploration.

Date: 2022
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DOI: 10.1038/s41467-022-34115-w

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