Modeling the Middle Jurassic ocean circulation
We present coupled ocean–sea-ice simulations of the Middle Jurassic (∼165 Ma) when Laurasia and Gondwana began drifting apart and gave rise to the formation of the Atlantic Ocean. Since the opening of the Proto-Caribbean is not well constrained by geological records, configurations with and without...
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ftdoajarticles:oai:doaj.org/article:39cf5765a8414e9dbfc96d4673bf6c1b 2023-05-15T18:18:31+02:00 Modeling the Middle Jurassic ocean circulation Maura Brunetti Christian Vérard Peter O. Baumgartner 2015-10-01T00:00:00Z https://doi.org/10.1016/j.jop.2015.09.001 https://doaj.org/article/39cf5765a8414e9dbfc96d4673bf6c1b EN eng Elsevier http://www.sciencedirect.com/science/article/pii/S2095383615000267 https://doaj.org/toc/2095-3836 2095-3836 doi:10.1016/j.jop.2015.09.001 https://doaj.org/article/39cf5765a8414e9dbfc96d4673bf6c1b Journal of Palaeogeography, Vol 4, Iss 4, Pp 371-383 (2015) Jurassic Modeling Ocean circulation Palaeoclimate Paleontology QE701-760 article 2015 ftdoajarticles https://doi.org/10.1016/j.jop.2015.09.001 2022-12-30T20:28:39Z We present coupled ocean–sea-ice simulations of the Middle Jurassic (∼165 Ma) when Laurasia and Gondwana began drifting apart and gave rise to the formation of the Atlantic Ocean. Since the opening of the Proto-Caribbean is not well constrained by geological records, configurations with and without an open connection between the Proto-Caribbean and Panthalassa are examined. We use a sea-floor bathymetry obtained by a recently developed three-dimensional (3D) elevation model which compiles geological, palaeogeographical and geophysical data. Our original approach consists in coupling this elevation model, which is based on detailed reconstructions of oceanic realms, with a dynamical ocean circulation model. We find that the Middle Jurassic bathymetry of the Central Atlantic and Proto-Caribbean seaway only allows for a weak current of the order of 2 Sv in the upper 1000 m even if the system is open to the west. The effect of closing the western boundary of the Proto-Caribbean is to increase the transport related to barotropic gyres in the southern hemisphere and to change water properties, such as salinity, in the Neo-Tethys. Weak upwelling rates are found in the nascent Atlantic Ocean in the presence of this superficial current and we discuss their compatibility with deep-sea sedimentological records in this region. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Journal of Palaeogeography 4 4 371 383 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Jurassic Modeling Ocean circulation Palaeoclimate Paleontology QE701-760 |
spellingShingle |
Jurassic Modeling Ocean circulation Palaeoclimate Paleontology QE701-760 Maura Brunetti Christian Vérard Peter O. Baumgartner Modeling the Middle Jurassic ocean circulation |
topic_facet |
Jurassic Modeling Ocean circulation Palaeoclimate Paleontology QE701-760 |
description |
We present coupled ocean–sea-ice simulations of the Middle Jurassic (∼165 Ma) when Laurasia and Gondwana began drifting apart and gave rise to the formation of the Atlantic Ocean. Since the opening of the Proto-Caribbean is not well constrained by geological records, configurations with and without an open connection between the Proto-Caribbean and Panthalassa are examined. We use a sea-floor bathymetry obtained by a recently developed three-dimensional (3D) elevation model which compiles geological, palaeogeographical and geophysical data. Our original approach consists in coupling this elevation model, which is based on detailed reconstructions of oceanic realms, with a dynamical ocean circulation model. We find that the Middle Jurassic bathymetry of the Central Atlantic and Proto-Caribbean seaway only allows for a weak current of the order of 2 Sv in the upper 1000 m even if the system is open to the west. The effect of closing the western boundary of the Proto-Caribbean is to increase the transport related to barotropic gyres in the southern hemisphere and to change water properties, such as salinity, in the Neo-Tethys. Weak upwelling rates are found in the nascent Atlantic Ocean in the presence of this superficial current and we discuss their compatibility with deep-sea sedimentological records in this region. |
format |
Article in Journal/Newspaper |
author |
Maura Brunetti Christian Vérard Peter O. Baumgartner |
author_facet |
Maura Brunetti Christian Vérard Peter O. Baumgartner |
author_sort |
Maura Brunetti |
title |
Modeling the Middle Jurassic ocean circulation |
title_short |
Modeling the Middle Jurassic ocean circulation |
title_full |
Modeling the Middle Jurassic ocean circulation |
title_fullStr |
Modeling the Middle Jurassic ocean circulation |
title_full_unstemmed |
Modeling the Middle Jurassic ocean circulation |
title_sort |
modeling the middle jurassic ocean circulation |
publisher |
Elsevier |
publishDate |
2015 |
url |
https://doi.org/10.1016/j.jop.2015.09.001 https://doaj.org/article/39cf5765a8414e9dbfc96d4673bf6c1b |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Journal of Palaeogeography, Vol 4, Iss 4, Pp 371-383 (2015) |
op_relation |
http://www.sciencedirect.com/science/article/pii/S2095383615000267 https://doaj.org/toc/2095-3836 2095-3836 doi:10.1016/j.jop.2015.09.001 https://doaj.org/article/39cf5765a8414e9dbfc96d4673bf6c1b |
op_doi |
https://doi.org/10.1016/j.jop.2015.09.001 |
container_title |
Journal of Palaeogeography |
container_volume |
4 |
container_issue |
4 |
container_start_page |
371 |
op_container_end_page |
383 |
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1766195116757745664 |