The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system
In this study, we highlight the importance of permeability anisotropy on the hydrogeological regime of a ridge-flank hydrothermal system. Our study site, North Pond, is a marine sediment pond on ∼8 Ma seafloor in the North Atlantic, and represents a low-temperature, end-member ridge-flank hydrotherm...
Published in: | Earth and Planetary Science Letters |
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2023
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Online Access: | https://oceanrep.geomar.de/id/eprint/59337/ https://oceanrep.geomar.de/id/eprint/59337/1/Price.pdf https://doi.org/10.1016/j.epsl.2023.118300 |
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ftoceanrep:oai:oceanrep.geomar.de:59337 2024-02-11T10:06:28+01:00 The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system Price, Adam N. Fisher, Andrew T. Lindsey, Cary R. Stauffer, Philip H. Gable, Carl W. 2023-10 text https://oceanrep.geomar.de/id/eprint/59337/ https://oceanrep.geomar.de/id/eprint/59337/1/Price.pdf https://doi.org/10.1016/j.epsl.2023.118300 en eng Elsevier https://oceanrep.geomar.de/id/eprint/59337/1/Price.pdf Price, A. N., Fisher, A. T., Lindsey, C. R., Stauffer, P. H. and Gable, C. W. (2023) The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system. Earth and Planetary Science Letters, 619 . Art.-Nr.: 118300. DOI 10.1016/j.epsl.2023.118300 <https://doi.org/10.1016/j.epsl.2023.118300>. doi:10.1016/j.epsl.2023.118300 info:eu-repo/semantics/restrictedAccess Article PeerReviewed 2023 ftoceanrep https://doi.org/10.1016/j.epsl.2023.118300 2024-01-15T00:27:49Z In this study, we highlight the importance of permeability anisotropy on the hydrogeological regime of a ridge-flank hydrothermal system. Our study site, North Pond, is a marine sediment pond on ∼8 Ma seafloor in the North Atlantic, and represents a low-temperature, end-member ridge-flank hydrothermal system. Previous simulations of North Pond elucidated long-standing hypotheses concerning hydrothermal fluid and heat transport in the upper volcanic crust but failed to fully explain observed patterns of seafloor heat flux in this area. Here we use variography, a geostatistical method, to quantify relations between seafloor heat-flux measurements, and coupled numerical simulations of fluid and heat flow to simulate the hydrogeologic regime. Directional variography shows that heat-flux observations are correlated along-strike of the regional crustal fabric. Three-dimensional simulations that include permeability anisotropy are able to replicate seafloor heat-flux patterns across North Pond. The simulations that result in the best match to thermal data incorporate permeability anisotropy in the horizontal plane. We find that the feedback between permeability anisotropy and the asymmetric geometry of North Pond combine to promote advective removal of heat and mass within the crustal aquifer. These findings suggest that permeability anisotropy in the oceanic crust may influence ridge-flank hydrothermal circulation more broadly. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Earth and Planetary Science Letters 619 118300 |
institution |
Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
In this study, we highlight the importance of permeability anisotropy on the hydrogeological regime of a ridge-flank hydrothermal system. Our study site, North Pond, is a marine sediment pond on ∼8 Ma seafloor in the North Atlantic, and represents a low-temperature, end-member ridge-flank hydrothermal system. Previous simulations of North Pond elucidated long-standing hypotheses concerning hydrothermal fluid and heat transport in the upper volcanic crust but failed to fully explain observed patterns of seafloor heat flux in this area. Here we use variography, a geostatistical method, to quantify relations between seafloor heat-flux measurements, and coupled numerical simulations of fluid and heat flow to simulate the hydrogeologic regime. Directional variography shows that heat-flux observations are correlated along-strike of the regional crustal fabric. Three-dimensional simulations that include permeability anisotropy are able to replicate seafloor heat-flux patterns across North Pond. The simulations that result in the best match to thermal data incorporate permeability anisotropy in the horizontal plane. We find that the feedback between permeability anisotropy and the asymmetric geometry of North Pond combine to promote advective removal of heat and mass within the crustal aquifer. These findings suggest that permeability anisotropy in the oceanic crust may influence ridge-flank hydrothermal circulation more broadly. |
format |
Article in Journal/Newspaper |
author |
Price, Adam N. Fisher, Andrew T. Lindsey, Cary R. Stauffer, Philip H. Gable, Carl W. |
spellingShingle |
Price, Adam N. Fisher, Andrew T. Lindsey, Cary R. Stauffer, Philip H. Gable, Carl W. The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system |
author_facet |
Price, Adam N. Fisher, Andrew T. Lindsey, Cary R. Stauffer, Philip H. Gable, Carl W. |
author_sort |
Price, Adam N. |
title |
The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system |
title_short |
The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system |
title_full |
The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system |
title_fullStr |
The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system |
title_full_unstemmed |
The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system |
title_sort |
influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system |
publisher |
Elsevier |
publishDate |
2023 |
url |
https://oceanrep.geomar.de/id/eprint/59337/ https://oceanrep.geomar.de/id/eprint/59337/1/Price.pdf https://doi.org/10.1016/j.epsl.2023.118300 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/59337/1/Price.pdf Price, A. N., Fisher, A. T., Lindsey, C. R., Stauffer, P. H. and Gable, C. W. (2023) The influence of permeability anisotropy in the upper ocean crust on advective heat transport by a ridge-flank hydrothermal system. Earth and Planetary Science Letters, 619 . Art.-Nr.: 118300. DOI 10.1016/j.epsl.2023.118300 <https://doi.org/10.1016/j.epsl.2023.118300>. doi:10.1016/j.epsl.2023.118300 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1016/j.epsl.2023.118300 |
container_title |
Earth and Planetary Science Letters |
container_volume |
619 |
container_start_page |
118300 |
_version_ |
1790604207081914368 |