Geologic controls on supercritical geothermal resources above magmatic intrusions ...
A new and economically attractive type of geothermal resource was recently discovered in the Krafla volcanic system, Iceland, consisting of supercritical water at 450 °C immediately above a 2-km deep magma body. Although utilizing such supercritical resources could multiply power production from geo...
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ftdatacite:10.3929/ethz-b-000103244 2024-04-28T08:25:49+00:00 Geologic controls on supercritical geothermal resources above magmatic intrusions ... Scott, Samuel Driesner, Thomas Weis, Philipp 2015 application/pdf https://dx.doi.org/10.3929/ethz-b-000103244 http://hdl.handle.net/20.500.11850/103244 en eng ETH Zurich info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 article-journal Text ScholarlyArticle Journal Article 2015 ftdatacite https://doi.org/10.3929/ethz-b-000103244 2024-04-02T12:33:25Z A new and economically attractive type of geothermal resource was recently discovered in the Krafla volcanic system, Iceland, consisting of supercritical water at 450 °C immediately above a 2-km deep magma body. Although utilizing such supercritical resources could multiply power production from geothermal wells, the abundance, location and size of similar resources are undefined. Here we present the first numerical simulations of supercritical geothermal resource formation, showing that they are an integral part of magma-driven geothermal systems. Potentially exploitable resources form in rocks with a brittle–ductile transition temperature higher than 450 °C, such as basalt. Water temperatures and enthalpies can exceed 400 °C and 3 MJ kg−1, depending on host rock permeability. Conventional high-enthalpy resources result from mixing of ascending supercritical and cooler surrounding water. Our models reproduce the measured thermal conditions of the resource discovered at Krafla. Similar resources may be ... : Nature Communications, 6 ... Article in Journal/Newspaper Iceland DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
English |
description |
A new and economically attractive type of geothermal resource was recently discovered in the Krafla volcanic system, Iceland, consisting of supercritical water at 450 °C immediately above a 2-km deep magma body. Although utilizing such supercritical resources could multiply power production from geothermal wells, the abundance, location and size of similar resources are undefined. Here we present the first numerical simulations of supercritical geothermal resource formation, showing that they are an integral part of magma-driven geothermal systems. Potentially exploitable resources form in rocks with a brittle–ductile transition temperature higher than 450 °C, such as basalt. Water temperatures and enthalpies can exceed 400 °C and 3 MJ kg−1, depending on host rock permeability. Conventional high-enthalpy resources result from mixing of ascending supercritical and cooler surrounding water. Our models reproduce the measured thermal conditions of the resource discovered at Krafla. Similar resources may be ... : Nature Communications, 6 ... |
format |
Article in Journal/Newspaper |
author |
Scott, Samuel Driesner, Thomas Weis, Philipp |
spellingShingle |
Scott, Samuel Driesner, Thomas Weis, Philipp Geologic controls on supercritical geothermal resources above magmatic intrusions ... |
author_facet |
Scott, Samuel Driesner, Thomas Weis, Philipp |
author_sort |
Scott, Samuel |
title |
Geologic controls on supercritical geothermal resources above magmatic intrusions ... |
title_short |
Geologic controls on supercritical geothermal resources above magmatic intrusions ... |
title_full |
Geologic controls on supercritical geothermal resources above magmatic intrusions ... |
title_fullStr |
Geologic controls on supercritical geothermal resources above magmatic intrusions ... |
title_full_unstemmed |
Geologic controls on supercritical geothermal resources above magmatic intrusions ... |
title_sort |
geologic controls on supercritical geothermal resources above magmatic intrusions ... |
publisher |
ETH Zurich |
publishDate |
2015 |
url |
https://dx.doi.org/10.3929/ethz-b-000103244 http://hdl.handle.net/20.500.11850/103244 |
genre |
Iceland |
genre_facet |
Iceland |
op_rights |
info:eu-repo/semantics/openAccess Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_doi |
https://doi.org/10.3929/ethz-b-000103244 |
_version_ |
1797585487700951040 |