Heat flow from the Southeast Indian Ridge flanks between 80°E and 140°E: Data review and analysis
International audience We analyze available heat flow data from the flanks of the Southeast Indian Ridge adjacent to or within the Australian-Antarctic Discordance (AAD), an area with patchy sediment cover and highly fractured seafloor as dissected by ridge- and fracture-parallel faults. The data se...
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-00267287 https://hal-insu.archives-ouvertes.fr/insu-00267287/document https://hal-insu.archives-ouvertes.fr/insu-00267287/file/JGR-Geli-franch-08.pdf https://doi.org/10.1029/2007JB005001 |
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ftinsu:oai:HAL:insu-00267287v1 2023-06-18T03:37:50+02:00 Heat flow from the Southeast Indian Ridge flanks between 80°E and 140°E: Data review and analysis Géli, L. C. Lee, T. R. Cochran, J. Francheteau, J. Abbott, D. Labails, C. Appriou, D. Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Department of Earth Sciences Riverside University of California Riverside (UC Riverside) University of California (UC)-University of California (UC) Lamont-Doherty Earth Observatory (LDEO) Columbia University New York Domaines Océaniques (LDO) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Observatoire des Sciences de l'Univers-Institut d'écologie et environnement-Centre National de la Recherche Scientifique (CNRS) 2008-01-05 https://hal-insu.archives-ouvertes.fr/insu-00267287 https://hal-insu.archives-ouvertes.fr/insu-00267287/document https://hal-insu.archives-ouvertes.fr/insu-00267287/file/JGR-Geli-franch-08.pdf https://doi.org/10.1029/2007JB005001 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2007JB005001 insu-00267287 https://hal-insu.archives-ouvertes.fr/insu-00267287 https://hal-insu.archives-ouvertes.fr/insu-00267287/document https://hal-insu.archives-ouvertes.fr/insu-00267287/file/JGR-Geli-franch-08.pdf doi:10.1029/2007JB005001 info:eu-repo/semantics/OpenAccess ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal-insu.archives-ouvertes.fr/insu-00267287 Journal of Geophysical Research : Solid Earth, 2008, 113, pp.B01101. ⟨10.1029/2007JB005001⟩ marine geophysics heat flow mid-ocean ridges [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes info:eu-repo/semantics/article Journal articles 2008 ftinsu https://doi.org/10.1029/2007JB005001 2023-06-05T23:03:21Z International audience We analyze available heat flow data from the flanks of the Southeast Indian Ridge adjacent to or within the Australian-Antarctic Discordance (AAD), an area with patchy sediment cover and highly fractured seafloor as dissected by ridge- and fracture-parallel faults. The data set includes 23 new data points collected along a 14-Ma old isochron and 19 existing measurements from the 20- to 24-Ma old crust. Most sites of measurements exhibit low heat flux (from 2 to 50 mW m−2) with near-linear temperature-depth profiles except at a few sites, where recent bottom water temperature change may have caused nonlinearity toward the sediment surface. Because the igneous basement is expected to outcrop a short distance away from any measurement site, we hypothesize that horizontally channelized water circulation within the uppermost crust is the primary process for the widespread low heat flow values. The process may be further influenced by vertical fluid flow along numerous fault zones that crisscross the AAD seafloor. Systematic measurements along and across the fault zones of interest as well as seismic profiling for sediment distribution are required to confirm this possible, suspected effect. Article in Journal/Newspaper Antarc* Antarctic Institut national des sciences de l'Univers: HAL-INSU Antarctic Australian-Antarctic Discordance ENVELOPE(124.000,124.000,-49.000,-49.000) Indian Southeast Indian Ridge ENVELOPE(110.000,110.000,-50.000,-50.000) Journal of Geophysical Research 113 B1 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
marine geophysics heat flow mid-ocean ridges [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
spellingShingle |
marine geophysics heat flow mid-ocean ridges [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes Géli, L. C. Lee, T. R. Cochran, J. Francheteau, J. Abbott, D. Labails, C. Appriou, D. Heat flow from the Southeast Indian Ridge flanks between 80°E and 140°E: Data review and analysis |
topic_facet |
marine geophysics heat flow mid-ocean ridges [SDU.STU.GP]Sciences of the Universe [physics]/Earth Sciences/Geophysics [physics.geo-ph] [PHYS.PHYS.PHYS-GEO-PH]Physics [physics]/Physics [physics]/Geophysics [physics.geo-ph] [SDE.MCG]Environmental Sciences/Global Changes |
description |
International audience We analyze available heat flow data from the flanks of the Southeast Indian Ridge adjacent to or within the Australian-Antarctic Discordance (AAD), an area with patchy sediment cover and highly fractured seafloor as dissected by ridge- and fracture-parallel faults. The data set includes 23 new data points collected along a 14-Ma old isochron and 19 existing measurements from the 20- to 24-Ma old crust. Most sites of measurements exhibit low heat flux (from 2 to 50 mW m−2) with near-linear temperature-depth profiles except at a few sites, where recent bottom water temperature change may have caused nonlinearity toward the sediment surface. Because the igneous basement is expected to outcrop a short distance away from any measurement site, we hypothesize that horizontally channelized water circulation within the uppermost crust is the primary process for the widespread low heat flow values. The process may be further influenced by vertical fluid flow along numerous fault zones that crisscross the AAD seafloor. Systematic measurements along and across the fault zones of interest as well as seismic profiling for sediment distribution are required to confirm this possible, suspected effect. |
author2 |
Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Department of Earth Sciences Riverside University of California Riverside (UC Riverside) University of California (UC)-University of California (UC) Lamont-Doherty Earth Observatory (LDEO) Columbia University New York Domaines Océaniques (LDO) Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Observatoire des Sciences de l'Univers-Institut d'écologie et environnement-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Géli, L. C. Lee, T. R. Cochran, J. Francheteau, J. Abbott, D. Labails, C. Appriou, D. |
author_facet |
Géli, L. C. Lee, T. R. Cochran, J. Francheteau, J. Abbott, D. Labails, C. Appriou, D. |
author_sort |
Géli, L. |
title |
Heat flow from the Southeast Indian Ridge flanks between 80°E and 140°E: Data review and analysis |
title_short |
Heat flow from the Southeast Indian Ridge flanks between 80°E and 140°E: Data review and analysis |
title_full |
Heat flow from the Southeast Indian Ridge flanks between 80°E and 140°E: Data review and analysis |
title_fullStr |
Heat flow from the Southeast Indian Ridge flanks between 80°E and 140°E: Data review and analysis |
title_full_unstemmed |
Heat flow from the Southeast Indian Ridge flanks between 80°E and 140°E: Data review and analysis |
title_sort |
heat flow from the southeast indian ridge flanks between 80°e and 140°e: data review and analysis |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal-insu.archives-ouvertes.fr/insu-00267287 https://hal-insu.archives-ouvertes.fr/insu-00267287/document https://hal-insu.archives-ouvertes.fr/insu-00267287/file/JGR-Geli-franch-08.pdf https://doi.org/10.1029/2007JB005001 |
long_lat |
ENVELOPE(124.000,124.000,-49.000,-49.000) ENVELOPE(110.000,110.000,-50.000,-50.000) |
geographic |
Antarctic Australian-Antarctic Discordance Indian Southeast Indian Ridge |
geographic_facet |
Antarctic Australian-Antarctic Discordance Indian Southeast Indian Ridge |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 2169-9313 EISSN: 2169-9356 Journal of Geophysical Research : Solid Earth https://hal-insu.archives-ouvertes.fr/insu-00267287 Journal of Geophysical Research : Solid Earth, 2008, 113, pp.B01101. ⟨10.1029/2007JB005001⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2007JB005001 insu-00267287 https://hal-insu.archives-ouvertes.fr/insu-00267287 https://hal-insu.archives-ouvertes.fr/insu-00267287/document https://hal-insu.archives-ouvertes.fr/insu-00267287/file/JGR-Geli-franch-08.pdf doi:10.1029/2007JB005001 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2007JB005001 |
container_title |
Journal of Geophysical Research |
container_volume |
113 |
container_issue |
B1 |
_version_ |
1769010608979574784 |