Late Pliocene and early Pleistocene rock-magnetic record of IODP Site 306-U1314
Knowledge of the evolution of North Atlantic Deep Water (NADW) is key to understanding the past evolution of the climatic system. We developed a new rock-magnetic method to determine the constituent magnetic minerals of sediments and report on the evolution of NADW during 2.2-2.9 Ma. We measured iso...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.848329 2024-09-15T18:14:14+00:00 Late Pliocene and early Pleistocene rock-magnetic record of IODP Site 306-U1314 Sato, Masahiko Makio, Masato Hayashi, T Ohno, Masao LATITUDE: 56.364000 * LONGITUDE: -27.888000 * DATE/TIME START: 2005-04-07T00:00:00 * DATE/TIME END: 2005-04-10T00:00:00 * MINIMUM DEPTH, sediment/rock: 199.31 m * MAXIMUM DEPTH, sediment/rock: 299.19 m 2015 text/tab-separated-values, 1764 data points https://doi.pangaea.de/10.1594/PANGAEA.848329 https://doi.org/10.1594/PANGAEA.848329 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.848329 https://doi.org/10.1594/PANGAEA.848329 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Sato, Masahiko; Makio, Masato; Hayashi, T; Ohno, Masao (2015): Abrupt intensification of North Atlantic Deep Water formation at the Nordic Seas during the late Pliocene climate transition. Geophysical Research Letters, 42(12), 4949-4955, https://doi.org/10.1002/2015GL063307 306-U1314 AGE COMPCORE Composite Core DEPTH sediment/rock Exp306 High-coerecivity component Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Isothermal Remanent Magnetization intensity mean of gradient median of gradient mode of gradient Joides Resolution Low-coerecivity component North Atlantic Climate 2 North Atlantic Ocean Residual dataset 2015 ftpangaea https://doi.org/10.1594/PANGAEA.84832910.1002/2015GL063307 2024-08-21T00:02:27Z Knowledge of the evolution of North Atlantic Deep Water (NADW) is key to understanding the past evolution of the climatic system. We developed a new rock-magnetic method to determine the constituent magnetic minerals of sediments and report on the evolution of NADW during 2.2-2.9 Ma. We measured isothermal remanence acquisition curves of North Atlantic deep-sea sediments drilled at the Gardar Drift and decomposed the first derivatives of these curves into high-coercivity and low-coercivity components. Residuals of the decomposition were sufficiently small throughout the study interval, confirming that the Gardar Drift sediments represent a mixing of the two end-members. Fractional changes of the high-coercivity component represent variation of the Iceland-Scotland Overflow Water, a branch of NADW formed at the Nordic Seas. The high-coercivity component increased significantly during an interglacial period just after ~2.68 Ma, which suggests that NADW formation in the Nordic Seas abruptly intensified at this time. Dataset Iceland NADW Nordic Seas North Atlantic Deep Water North Atlantic New Rock PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-27.888000,-27.888000,56.364000,56.364000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
306-U1314 AGE COMPCORE Composite Core DEPTH sediment/rock Exp306 High-coerecivity component Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Isothermal Remanent Magnetization intensity mean of gradient median of gradient mode of gradient Joides Resolution Low-coerecivity component North Atlantic Climate 2 North Atlantic Ocean Residual |
spellingShingle |
306-U1314 AGE COMPCORE Composite Core DEPTH sediment/rock Exp306 High-coerecivity component Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Isothermal Remanent Magnetization intensity mean of gradient median of gradient mode of gradient Joides Resolution Low-coerecivity component North Atlantic Climate 2 North Atlantic Ocean Residual Sato, Masahiko Makio, Masato Hayashi, T Ohno, Masao Late Pliocene and early Pleistocene rock-magnetic record of IODP Site 306-U1314 |
topic_facet |
306-U1314 AGE COMPCORE Composite Core DEPTH sediment/rock Exp306 High-coerecivity component Integrated Ocean Drilling Program / International Ocean Discovery Program IODP Isothermal Remanent Magnetization intensity mean of gradient median of gradient mode of gradient Joides Resolution Low-coerecivity component North Atlantic Climate 2 North Atlantic Ocean Residual |
description |
Knowledge of the evolution of North Atlantic Deep Water (NADW) is key to understanding the past evolution of the climatic system. We developed a new rock-magnetic method to determine the constituent magnetic minerals of sediments and report on the evolution of NADW during 2.2-2.9 Ma. We measured isothermal remanence acquisition curves of North Atlantic deep-sea sediments drilled at the Gardar Drift and decomposed the first derivatives of these curves into high-coercivity and low-coercivity components. Residuals of the decomposition were sufficiently small throughout the study interval, confirming that the Gardar Drift sediments represent a mixing of the two end-members. Fractional changes of the high-coercivity component represent variation of the Iceland-Scotland Overflow Water, a branch of NADW formed at the Nordic Seas. The high-coercivity component increased significantly during an interglacial period just after ~2.68 Ma, which suggests that NADW formation in the Nordic Seas abruptly intensified at this time. |
format |
Dataset |
author |
Sato, Masahiko Makio, Masato Hayashi, T Ohno, Masao |
author_facet |
Sato, Masahiko Makio, Masato Hayashi, T Ohno, Masao |
author_sort |
Sato, Masahiko |
title |
Late Pliocene and early Pleistocene rock-magnetic record of IODP Site 306-U1314 |
title_short |
Late Pliocene and early Pleistocene rock-magnetic record of IODP Site 306-U1314 |
title_full |
Late Pliocene and early Pleistocene rock-magnetic record of IODP Site 306-U1314 |
title_fullStr |
Late Pliocene and early Pleistocene rock-magnetic record of IODP Site 306-U1314 |
title_full_unstemmed |
Late Pliocene and early Pleistocene rock-magnetic record of IODP Site 306-U1314 |
title_sort |
late pliocene and early pleistocene rock-magnetic record of iodp site 306-u1314 |
publisher |
PANGAEA |
publishDate |
2015 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.848329 https://doi.org/10.1594/PANGAEA.848329 |
op_coverage |
LATITUDE: 56.364000 * LONGITUDE: -27.888000 * DATE/TIME START: 2005-04-07T00:00:00 * DATE/TIME END: 2005-04-10T00:00:00 * MINIMUM DEPTH, sediment/rock: 199.31 m * MAXIMUM DEPTH, sediment/rock: 299.19 m |
long_lat |
ENVELOPE(-27.888000,-27.888000,56.364000,56.364000) |
genre |
Iceland NADW Nordic Seas North Atlantic Deep Water North Atlantic New Rock |
genre_facet |
Iceland NADW Nordic Seas North Atlantic Deep Water North Atlantic New Rock |
op_source |
Supplement to: Sato, Masahiko; Makio, Masato; Hayashi, T; Ohno, Masao (2015): Abrupt intensification of North Atlantic Deep Water formation at the Nordic Seas during the late Pliocene climate transition. Geophysical Research Letters, 42(12), 4949-4955, https://doi.org/10.1002/2015GL063307 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.848329 https://doi.org/10.1594/PANGAEA.848329 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.84832910.1002/2015GL063307 |
_version_ |
1810452010470735872 |