(Table 1) Nd-Hf isotopes from leachates and detrital materials of the Arctic sediments
The warm and saline North Atlantic inflow to the Arctic Ocean is a major component of high northern latitude circulation and the main mechanism of deep water renewal in the Arctic Ocean. Knowledge of its past variability is critical for understanding the high latitude feedback mechanisms of the clim...
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Language: | English |
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PANGAEA
2012
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Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.871708 https://doi.org/10.1594/PANGAEA.871708 |
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.871708 |
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openpolar |
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Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
302-M0002A 302-M0004C ACEX-M2A ACEX-M4C AGE Akademik Boris Petrov Arctic Coring Expedition ACEX Arctic Ocean ARK-VIII/3 ARK-XXII/2 BC Box corer BP97 BP97-12 BP97-32 BP97-46 BP97-52 BP97-56 Comment DEPTH sediment/rock DIVERSE Elevation of event Event label Exp302 Giant box corer GKG Hafnium-176/Hafnium-177 standard deviation Integrated Ocean Drilling Program / International Ocean Discovery Program IODP KAL Kara Sea KaraSea97 Kasten corer Latitude of event Lomonosov Ridge Longitude of event MULT Multiple investigations Neodymium-143/Neodymium-144 ratio Polarstern PS19/178 PS19/186 PS19 ARCTIC91 |
spellingShingle |
302-M0002A 302-M0004C ACEX-M2A ACEX-M4C AGE Akademik Boris Petrov Arctic Coring Expedition ACEX Arctic Ocean ARK-VIII/3 ARK-XXII/2 BC Box corer BP97 BP97-12 BP97-32 BP97-46 BP97-52 BP97-56 Comment DEPTH sediment/rock DIVERSE Elevation of event Event label Exp302 Giant box corer GKG Hafnium-176/Hafnium-177 standard deviation Integrated Ocean Drilling Program / International Ocean Discovery Program IODP KAL Kara Sea KaraSea97 Kasten corer Latitude of event Lomonosov Ridge Longitude of event MULT Multiple investigations Neodymium-143/Neodymium-144 ratio Polarstern PS19/178 PS19/186 PS19 ARCTIC91 Chen, Tian-Yu Frank, Martin Haley, Brian A Gutjahr, Marcus Spielhagen, Robert F (Table 1) Nd-Hf isotopes from leachates and detrital materials of the Arctic sediments |
topic_facet |
302-M0002A 302-M0004C ACEX-M2A ACEX-M4C AGE Akademik Boris Petrov Arctic Coring Expedition ACEX Arctic Ocean ARK-VIII/3 ARK-XXII/2 BC Box corer BP97 BP97-12 BP97-32 BP97-46 BP97-52 BP97-56 Comment DEPTH sediment/rock DIVERSE Elevation of event Event label Exp302 Giant box corer GKG Hafnium-176/Hafnium-177 standard deviation Integrated Ocean Drilling Program / International Ocean Discovery Program IODP KAL Kara Sea KaraSea97 Kasten corer Latitude of event Lomonosov Ridge Longitude of event MULT Multiple investigations Neodymium-143/Neodymium-144 ratio Polarstern PS19/178 PS19/186 PS19 ARCTIC91 |
description |
The warm and saline North Atlantic inflow to the Arctic Ocean is a major component of high northern latitude circulation and the main mechanism of deep water renewal in the Arctic Ocean. Knowledge of its past variability is critical for understanding the high latitude feedback mechanisms of the climate system. Here we present the first combined seawater Hf and Nd isotope compositions of past Arctic Intermediate Water extracted from the authigenic Fe?Mn oxyhydroxide fraction of two sediment cores recovered near the North Pole, to reconstruct changes in contributions from glacial brines of the Eurasian shelf and past inflow of Atlantic waters. The Hf and Nd isotopic compositions obtained from leachates of the authigenic fraction show closely coupled and environmentally controlled variations over the past 14 million years. An observed offset of these data from seawater e-Hf and e-Nd compositions from other ocean basins (seawater array) is interpreted as the result of continuously prevailing glacial weathering conditions on the high latitude Eurasian continent. In the late Quaternary, large amplitude Hf and Nd isotopic variations of Arctic Intermediate Water (AIW) was characterized by more radiogenic isotope signatures generally prevailing under glacial conditions and less radiogenic values during interglacial periods. On the basis of the close coupling between Nd and Hf isotopes, we suggest that the evolution of Hf isotope compositions of central Arctic AIW has primarily been controlled by changes in ocean circulation and provenance of weathering inputs, rather than changes in weathering regime. |
format |
Dataset |
author |
Chen, Tian-Yu Frank, Martin Haley, Brian A Gutjahr, Marcus Spielhagen, Robert F |
author_facet |
Chen, Tian-Yu Frank, Martin Haley, Brian A Gutjahr, Marcus Spielhagen, Robert F |
author_sort |
Chen, Tian-Yu |
title |
(Table 1) Nd-Hf isotopes from leachates and detrital materials of the Arctic sediments |
title_short |
(Table 1) Nd-Hf isotopes from leachates and detrital materials of the Arctic sediments |
title_full |
(Table 1) Nd-Hf isotopes from leachates and detrital materials of the Arctic sediments |
title_fullStr |
(Table 1) Nd-Hf isotopes from leachates and detrital materials of the Arctic sediments |
title_full_unstemmed |
(Table 1) Nd-Hf isotopes from leachates and detrital materials of the Arctic sediments |
title_sort |
(table 1) nd-hf isotopes from leachates and detrital materials of the arctic sediments |
publisher |
PANGAEA |
publishDate |
2012 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.871708 https://doi.org/10.1594/PANGAEA.871708 |
op_coverage |
MEDIAN LATITUDE: 81.086438 * MEDIAN LONGITUDE: 111.136229 * SOUTH-BOUND LATITUDE: 72.093160 * WEST-BOUND LONGITUDE: 72.662000 * NORTH-BOUND LATITUDE: 88.204000 * EAST-BOUND LONGITUDE: 144.166200 * DATE/TIME START: 1991-08-30T00:00:00 * DATE/TIME END: 2007-08-30T13:48:00 * MINIMUM DEPTH, sediment/rock: 0.00 m * MAXIMUM DEPTH, sediment/rock: 189.68 m |
long_lat |
ENVELOPE(72.662000,144.166200,88.204000,72.093160) |
geographic |
Arctic Arctic Ocean Kara Sea North Pole |
geographic_facet |
Arctic Arctic Ocean Kara Sea North Pole |
genre |
Arctic Arctic Arctic Ocean Kara Sea Lomonosov Ridge North Atlantic North Pole |
genre_facet |
Arctic Arctic Arctic Ocean Kara Sea Lomonosov Ridge North Atlantic North Pole |
op_source |
Supplement to: Chen, Tian-Yu; Frank, Martin; Haley, Brian A; Gutjahr, Marcus; Spielhagen, Robert F (2012): Variations of North Atlantic inflow to the central Arctic Ocean over the last 14 million years inferred from hafnium and neodymium isotopes. Earth and Planetary Science Letters, 353-354, 82-92, https://doi.org/10.1016/j.epsl.2012.08.012 |
op_relation |
Haley, Brian A; Frank, Martin; Spielhagen, Robert F; Eisenhauer, Anton (2008): Influence of brine formation on Arctic Ocean circulation over the past 15 million years. Nature Geoscience, 1, 68-72, https://doi.org/10.1038/ngeo.2007.5 https://doi.pangaea.de/10.1594/PANGAEA.871708 https://doi.org/10.1594/PANGAEA.871708 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.871708 https://doi.org/10.1016/j.epsl.2012.08.012 https://doi.org/10.1038/ngeo.2007.5 |
_version_ |
1766297613510901760 |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.871708 2023-05-15T14:25:11+02:00 (Table 1) Nd-Hf isotopes from leachates and detrital materials of the Arctic sediments Chen, Tian-Yu Frank, Martin Haley, Brian A Gutjahr, Marcus Spielhagen, Robert F MEDIAN LATITUDE: 81.086438 * MEDIAN LONGITUDE: 111.136229 * SOUTH-BOUND LATITUDE: 72.093160 * WEST-BOUND LONGITUDE: 72.662000 * NORTH-BOUND LATITUDE: 88.204000 * EAST-BOUND LONGITUDE: 144.166200 * DATE/TIME START: 1991-08-30T00:00:00 * DATE/TIME END: 2007-08-30T13:48:00 * MINIMUM DEPTH, sediment/rock: 0.00 m * MAXIMUM DEPTH, sediment/rock: 189.68 m 2012-02-06 text/tab-separated-values, 522 data points https://doi.pangaea.de/10.1594/PANGAEA.871708 https://doi.org/10.1594/PANGAEA.871708 en eng PANGAEA Haley, Brian A; Frank, Martin; Spielhagen, Robert F; Eisenhauer, Anton (2008): Influence of brine formation on Arctic Ocean circulation over the past 15 million years. Nature Geoscience, 1, 68-72, https://doi.org/10.1038/ngeo.2007.5 https://doi.pangaea.de/10.1594/PANGAEA.871708 https://doi.org/10.1594/PANGAEA.871708 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Chen, Tian-Yu; Frank, Martin; Haley, Brian A; Gutjahr, Marcus; Spielhagen, Robert F (2012): Variations of North Atlantic inflow to the central Arctic Ocean over the last 14 million years inferred from hafnium and neodymium isotopes. Earth and Planetary Science Letters, 353-354, 82-92, https://doi.org/10.1016/j.epsl.2012.08.012 302-M0002A 302-M0004C ACEX-M2A ACEX-M4C AGE Akademik Boris Petrov Arctic Coring Expedition ACEX Arctic Ocean ARK-VIII/3 ARK-XXII/2 BC Box corer BP97 BP97-12 BP97-32 BP97-46 BP97-52 BP97-56 Comment DEPTH sediment/rock DIVERSE Elevation of event Event label Exp302 Giant box corer GKG Hafnium-176/Hafnium-177 standard deviation Integrated Ocean Drilling Program / International Ocean Discovery Program IODP KAL Kara Sea KaraSea97 Kasten corer Latitude of event Lomonosov Ridge Longitude of event MULT Multiple investigations Neodymium-143/Neodymium-144 ratio Polarstern PS19/178 PS19/186 PS19 ARCTIC91 Dataset 2012 ftpangaea https://doi.org/10.1594/PANGAEA.871708 https://doi.org/10.1016/j.epsl.2012.08.012 https://doi.org/10.1038/ngeo.2007.5 2023-01-20T09:08:33Z The warm and saline North Atlantic inflow to the Arctic Ocean is a major component of high northern latitude circulation and the main mechanism of deep water renewal in the Arctic Ocean. Knowledge of its past variability is critical for understanding the high latitude feedback mechanisms of the climate system. Here we present the first combined seawater Hf and Nd isotope compositions of past Arctic Intermediate Water extracted from the authigenic Fe?Mn oxyhydroxide fraction of two sediment cores recovered near the North Pole, to reconstruct changes in contributions from glacial brines of the Eurasian shelf and past inflow of Atlantic waters. The Hf and Nd isotopic compositions obtained from leachates of the authigenic fraction show closely coupled and environmentally controlled variations over the past 14 million years. An observed offset of these data from seawater e-Hf and e-Nd compositions from other ocean basins (seawater array) is interpreted as the result of continuously prevailing glacial weathering conditions on the high latitude Eurasian continent. In the late Quaternary, large amplitude Hf and Nd isotopic variations of Arctic Intermediate Water (AIW) was characterized by more radiogenic isotope signatures generally prevailing under glacial conditions and less radiogenic values during interglacial periods. On the basis of the close coupling between Nd and Hf isotopes, we suggest that the evolution of Hf isotope compositions of central Arctic AIW has primarily been controlled by changes in ocean circulation and provenance of weathering inputs, rather than changes in weathering regime. Dataset Arctic Arctic Arctic Ocean Kara Sea Lomonosov Ridge North Atlantic North Pole PANGAEA - Data Publisher for Earth & Environmental Science Arctic Arctic Ocean Kara Sea North Pole ENVELOPE(72.662000,144.166200,88.204000,72.093160) |