Evolution of the zonal gradients across the equatorial Pacific during the Miocene–Pleistocene
Combining U K,/sup> 37 - and TEX 86 -derived temperatures and oxygen isotopic values of mixed-layer and thermocline species from the IODP site U1338 (East Equatorial Pacific) and ODP Site 806 (West Equatorial Pacific) we assess the evolution of the zonal sea-surface temperature gradients and ther...
Published in: | Journal of Sedimentary Research |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2019
|
Subjects: | |
Online Access: | http://imis.nioz.nl/imis.php?module=ref&refid=310788 |
id |
ftnioz:oai:imis.nioz.nl:310788 |
---|---|
record_format |
openpolar |
spelling |
ftnioz:oai:imis.nioz.nl:310788 2023-05-15T13:47:57+02:00 Evolution of the zonal gradients across the equatorial Pacific during the Miocene–Pleistocene Beltran, C. Rousselle, G. de Rafélis, M. Sicre, M.-A. Labourdette, N. Schouten, S. 2019 http://imis.nioz.nl/imis.php?module=ref&refid=310788 en eng info:eu-repo/semantics/altIdentifier/wos/000462600400005 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.2110/jsr.2019.15 http://imis.nioz.nl/imis.php?module=ref&refid=310788 info:eu-repo/semantics/closedAccess %3Ci%3EJ.+Sedim.+Res.+89%283%29%3C%2Fi%3E%3A+242-252.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.2110%2Fjsr.2019.15%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.2110%2Fjsr.2019.15%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2019 ftnioz https://doi.org/10.2110/jsr.2019.15 2022-05-01T14:09:30Z Combining U K,/sup> 37 - and TEX 86 -derived temperatures and oxygen isotopic values of mixed-layer and thermocline species from the IODP site U1338 (East Equatorial Pacific) and ODP Site 806 (West Equatorial Pacific) we assess the evolution of the zonal sea-surface temperature gradients and thermocline depth across the equatorial Pacific from the late Miocene through the Pleistocene. Data suggest a long-term shoaling of the thermocline along the equator throughout the Miocene–Pliocene that accelerated around 5.3 Ma. We identify a critical transition at about 3.8 Ma from a El-Niño-like-dominated mean state during the late Miocene and early Pliocene to a La-Niña-like-dominated state during the late Pliocene–Pleistocene. This transition coincides with the restriction of the Indonesian seaway and the onset of ice growth in the northern hemisphere and in Antarctica that led to the long-term strengthening of the Walker circulation and affected low-latitude zonal gradient. Article in Journal/Newspaper Antarc* Antarctica NIOZ Repository (Royal Netherlands Institute for Sea Research) Pacific Journal of Sedimentary Research 89 3 242 252 |
institution |
Open Polar |
collection |
NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
description |
Combining U K,/sup> 37 - and TEX 86 -derived temperatures and oxygen isotopic values of mixed-layer and thermocline species from the IODP site U1338 (East Equatorial Pacific) and ODP Site 806 (West Equatorial Pacific) we assess the evolution of the zonal sea-surface temperature gradients and thermocline depth across the equatorial Pacific from the late Miocene through the Pleistocene. Data suggest a long-term shoaling of the thermocline along the equator throughout the Miocene–Pliocene that accelerated around 5.3 Ma. We identify a critical transition at about 3.8 Ma from a El-Niño-like-dominated mean state during the late Miocene and early Pliocene to a La-Niña-like-dominated state during the late Pliocene–Pleistocene. This transition coincides with the restriction of the Indonesian seaway and the onset of ice growth in the northern hemisphere and in Antarctica that led to the long-term strengthening of the Walker circulation and affected low-latitude zonal gradient. |
format |
Article in Journal/Newspaper |
author |
Beltran, C. Rousselle, G. de Rafélis, M. Sicre, M.-A. Labourdette, N. Schouten, S. |
spellingShingle |
Beltran, C. Rousselle, G. de Rafélis, M. Sicre, M.-A. Labourdette, N. Schouten, S. Evolution of the zonal gradients across the equatorial Pacific during the Miocene–Pleistocene |
author_facet |
Beltran, C. Rousselle, G. de Rafélis, M. Sicre, M.-A. Labourdette, N. Schouten, S. |
author_sort |
Beltran, C. |
title |
Evolution of the zonal gradients across the equatorial Pacific during the Miocene–Pleistocene |
title_short |
Evolution of the zonal gradients across the equatorial Pacific during the Miocene–Pleistocene |
title_full |
Evolution of the zonal gradients across the equatorial Pacific during the Miocene–Pleistocene |
title_fullStr |
Evolution of the zonal gradients across the equatorial Pacific during the Miocene–Pleistocene |
title_full_unstemmed |
Evolution of the zonal gradients across the equatorial Pacific during the Miocene–Pleistocene |
title_sort |
evolution of the zonal gradients across the equatorial pacific during the miocene–pleistocene |
publishDate |
2019 |
url |
http://imis.nioz.nl/imis.php?module=ref&refid=310788 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
%3Ci%3EJ.+Sedim.+Res.+89%283%29%3C%2Fi%3E%3A+242-252.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.2110%2Fjsr.2019.15%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.2110%2Fjsr.2019.15%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/000462600400005 info:eu-repo/semantics/altIdentifier/doi/doi.org/10.2110/jsr.2019.15 http://imis.nioz.nl/imis.php?module=ref&refid=310788 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.2110/jsr.2019.15 |
container_title |
Journal of Sedimentary Research |
container_volume |
89 |
container_issue |
3 |
container_start_page |
242 |
op_container_end_page |
252 |
_version_ |
1766248053449162752 |