Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites
Abstract High‐resolution geophysical data have been collected using the Autonomous Underwater Vehicle (AUV) Sentry over the ASHES (Axial Seamount Hydrothermal Emission Study) high‐temperature (~348°C) vent field at Axial Seamount, on the Juan de Fuca Ridge. Multiple surveys were performed on a 3‐D g...
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| Format: | Article |
| Language: | English |
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Wiley
2016-06-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL069430 |
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| author | Fabio Caratori Tontini Timothy J. Crone Cornel E. J. deRonde Daniel J. Fornari James C. Kinsey Eric Mittelstaedt Maurice Tivey |
| author_facet | Fabio Caratori Tontini Timothy J. Crone Cornel E. J. deRonde Daniel J. Fornari James C. Kinsey Eric Mittelstaedt Maurice Tivey |
| author_sort | Fabio Caratori Tontini |
| collection | DOAJ |
| description | Abstract High‐resolution geophysical data have been collected using the Autonomous Underwater Vehicle (AUV) Sentry over the ASHES (Axial Seamount Hydrothermal Emission Study) high‐temperature (~348°C) vent field at Axial Seamount, on the Juan de Fuca Ridge. Multiple surveys were performed on a 3‐D grid at different altitudes above the seafloor, providing an unprecedented view of magnetic data resolution as a function of altitude above the seafloor. Magnetic data derived near the seafloor show that the ASHES field is characterized by a zone of low magnetization, which can be explained by hydrothermal alteration of the host volcanic rocks. Surface manifestations of hydrothermal activity at the ASHES vent field are likely controlled by a combination of local faults and fractures and different lava morphologies near the seafloor. Three‐dimensional inversion of the magnetic data provides evidence of a vertical, pipe‐like upflow zone of the hydrothermal fluids with a vertical extent of ~100 m. |
| format | Article |
| id | doaj-art-b8778725d0e34b5a95415f4dc01f9201 |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-b8778725d0e34b5a95415f4dc01f92012025-08-20T03:10:24ZengWileyGeophysical Research Letters0094-82761944-80072016-06-0143126205621110.1002/2016GL069430Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sitesFabio Caratori Tontini0Timothy J. Crone1Cornel E. J. deRonde2Daniel J. Fornari3James C. Kinsey4Eric Mittelstaedt5Maurice Tivey6GNS Science Lower Hutt New ZealandLamont‐Doherty Earth Observatory Columbia University Palisades New York USAGNS Science Lower Hutt New ZealandWoods Hole Oceanographic Institution Woods Hole Massachusetts USAWoods Hole Oceanographic Institution Woods Hole Massachusetts USAUniversity of Idaho Moscow Idaho USAWoods Hole Oceanographic Institution Woods Hole Massachusetts USAAbstract High‐resolution geophysical data have been collected using the Autonomous Underwater Vehicle (AUV) Sentry over the ASHES (Axial Seamount Hydrothermal Emission Study) high‐temperature (~348°C) vent field at Axial Seamount, on the Juan de Fuca Ridge. Multiple surveys were performed on a 3‐D grid at different altitudes above the seafloor, providing an unprecedented view of magnetic data resolution as a function of altitude above the seafloor. Magnetic data derived near the seafloor show that the ASHES field is characterized by a zone of low magnetization, which can be explained by hydrothermal alteration of the host volcanic rocks. Surface manifestations of hydrothermal activity at the ASHES vent field are likely controlled by a combination of local faults and fractures and different lava morphologies near the seafloor. Three‐dimensional inversion of the magnetic data provides evidence of a vertical, pipe‐like upflow zone of the hydrothermal fluids with a vertical extent of ~100 m.https://doi.org/10.1002/2016GL069430ASHES vent fieldcrustal magnetizationSentry AUV |
| spellingShingle | Fabio Caratori Tontini Timothy J. Crone Cornel E. J. deRonde Daniel J. Fornari James C. Kinsey Eric Mittelstaedt Maurice Tivey Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites Geophysical Research Letters ASHES vent field crustal magnetization Sentry AUV |
| title | Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites |
| title_full | Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites |
| title_fullStr | Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites |
| title_full_unstemmed | Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites |
| title_short | Crustal magnetization and the subseafloor structure of the ASHES vent field, Axial Seamount, Juan de Fuca Ridge: Implications for the investigation of hydrothermal sites |
| title_sort | crustal magnetization and the subseafloor structure of the ashes vent field axial seamount juan de fuca ridge implications for the investigation of hydrothermal sites |
| topic | ASHES vent field crustal magnetization Sentry AUV |
| url | https://doi.org/10.1002/2016GL069430 |
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