(Table 2) Age determination of sediment core GeoB7139-2, supplement to: De Pol-Holz, Ricardo; Ulloa, Osvaldo; Lamy, Frank; Dezileau, Laurent; Sabatier, Pierre; Hebbeln, Dierk (2007): Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean. Paleoceanography, 22(2), PA2207
We present high-resolution bulk sedimentary d15N data from the southern edge of the present-day oxygen minimum zone of the eastern South Pacific. The record is interpreted as representing changes in water column nitrogen removal during the last 70,000 years. We found significant fluctuations in the...
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ftdatacite:10.1594/pangaea.833129 2023-05-15T16:41:06+02:00 (Table 2) Age determination of sediment core GeoB7139-2, supplement to: De Pol-Holz, Ricardo; Ulloa, Osvaldo; Lamy, Frank; Dezileau, Laurent; Sabatier, Pierre; Hebbeln, Dierk (2007): Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean. Paleoceanography, 22(2), PA2207 De Pol-Holz, Ricardo Ulloa, Osvaldo Lamy, Frank Dezileau, Laurent Sabatier, Pierre Hebbeln, Dierk 2007 text/tab-separated-values https://dx.doi.org/10.1594/pangaea.833129 https://doi.pangaea.de/10.1594/PANGAEA.833129 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1029/2006pa001308 https://dx.doi.org/10.1016/0033-5894(87)90046-9 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY DEPTH, sediment/rock Age, dated Age, dated standard deviation Calendar age Age, comment Gravity corer Kiel type Age, 14C AMS Age, 14C calibrated SO156/2 Sonne Dataset dataset Supplementary Dataset 2007 ftdatacite https://doi.org/10.1594/pangaea.833129 https://doi.org/10.1029/2006pa001308 https://doi.org/10.1016/0033-5894(87)90046-9 2022-02-09T13:17:17Z We present high-resolution bulk sedimentary d15N data from the southern edge of the present-day oxygen minimum zone of the eastern South Pacific. The record is interpreted as representing changes in water column nitrogen removal during the last 70,000 years. We found significant fluctuations in the isotopic signal that suggest major reorganizations of the oxygen minimum zone at millennial timescales. These fluctuations were not related to other millennial-scale changes like the Northern Hemisphere's Dansgaard-Oeschger climate swings or local changes in primary productivity, so appear to be dictated by the Southern Hemisphere's climate rhythm. This is preliminarily corroborated by an overall agreement between our d15N data and the sedimentary proxy of ice sheet dynamics in Patagonia, which is in turn correlated with surface water properties at the midlatitude subduction region of the eastern South Pacific intermediate waters. Finally, potential implications on late Quaternary changes in atmospheric CO2 concentrations are discussed. Dataset Ice Sheet DataCite Metadata Store (German National Library of Science and Technology) Pacific Patagonia Ricardo ENVELOPE(-63.033,-63.033,-64.867,-64.867) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
DEPTH, sediment/rock Age, dated Age, dated standard deviation Calendar age Age, comment Gravity corer Kiel type Age, 14C AMS Age, 14C calibrated SO156/2 Sonne |
spellingShingle |
DEPTH, sediment/rock Age, dated Age, dated standard deviation Calendar age Age, comment Gravity corer Kiel type Age, 14C AMS Age, 14C calibrated SO156/2 Sonne De Pol-Holz, Ricardo Ulloa, Osvaldo Lamy, Frank Dezileau, Laurent Sabatier, Pierre Hebbeln, Dierk (Table 2) Age determination of sediment core GeoB7139-2, supplement to: De Pol-Holz, Ricardo; Ulloa, Osvaldo; Lamy, Frank; Dezileau, Laurent; Sabatier, Pierre; Hebbeln, Dierk (2007): Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean. Paleoceanography, 22(2), PA2207 |
topic_facet |
DEPTH, sediment/rock Age, dated Age, dated standard deviation Calendar age Age, comment Gravity corer Kiel type Age, 14C AMS Age, 14C calibrated SO156/2 Sonne |
description |
We present high-resolution bulk sedimentary d15N data from the southern edge of the present-day oxygen minimum zone of the eastern South Pacific. The record is interpreted as representing changes in water column nitrogen removal during the last 70,000 years. We found significant fluctuations in the isotopic signal that suggest major reorganizations of the oxygen minimum zone at millennial timescales. These fluctuations were not related to other millennial-scale changes like the Northern Hemisphere's Dansgaard-Oeschger climate swings or local changes in primary productivity, so appear to be dictated by the Southern Hemisphere's climate rhythm. This is preliminarily corroborated by an overall agreement between our d15N data and the sedimentary proxy of ice sheet dynamics in Patagonia, which is in turn correlated with surface water properties at the midlatitude subduction region of the eastern South Pacific intermediate waters. Finally, potential implications on late Quaternary changes in atmospheric CO2 concentrations are discussed. |
format |
Dataset |
author |
De Pol-Holz, Ricardo Ulloa, Osvaldo Lamy, Frank Dezileau, Laurent Sabatier, Pierre Hebbeln, Dierk |
author_facet |
De Pol-Holz, Ricardo Ulloa, Osvaldo Lamy, Frank Dezileau, Laurent Sabatier, Pierre Hebbeln, Dierk |
author_sort |
De Pol-Holz, Ricardo |
title |
(Table 2) Age determination of sediment core GeoB7139-2, supplement to: De Pol-Holz, Ricardo; Ulloa, Osvaldo; Lamy, Frank; Dezileau, Laurent; Sabatier, Pierre; Hebbeln, Dierk (2007): Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean. Paleoceanography, 22(2), PA2207 |
title_short |
(Table 2) Age determination of sediment core GeoB7139-2, supplement to: De Pol-Holz, Ricardo; Ulloa, Osvaldo; Lamy, Frank; Dezileau, Laurent; Sabatier, Pierre; Hebbeln, Dierk (2007): Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean. Paleoceanography, 22(2), PA2207 |
title_full |
(Table 2) Age determination of sediment core GeoB7139-2, supplement to: De Pol-Holz, Ricardo; Ulloa, Osvaldo; Lamy, Frank; Dezileau, Laurent; Sabatier, Pierre; Hebbeln, Dierk (2007): Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean. Paleoceanography, 22(2), PA2207 |
title_fullStr |
(Table 2) Age determination of sediment core GeoB7139-2, supplement to: De Pol-Holz, Ricardo; Ulloa, Osvaldo; Lamy, Frank; Dezileau, Laurent; Sabatier, Pierre; Hebbeln, Dierk (2007): Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean. Paleoceanography, 22(2), PA2207 |
title_full_unstemmed |
(Table 2) Age determination of sediment core GeoB7139-2, supplement to: De Pol-Holz, Ricardo; Ulloa, Osvaldo; Lamy, Frank; Dezileau, Laurent; Sabatier, Pierre; Hebbeln, Dierk (2007): Late Quaternary variability of sedimentary nitrogen isotopes in the eastern South Pacific Ocean. Paleoceanography, 22(2), PA2207 |
title_sort |
(table 2) age determination of sediment core geob7139-2, supplement to: de pol-holz, ricardo; ulloa, osvaldo; lamy, frank; dezileau, laurent; sabatier, pierre; hebbeln, dierk (2007): late quaternary variability of sedimentary nitrogen isotopes in the eastern south pacific ocean. paleoceanography, 22(2), pa2207 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2007 |
url |
https://dx.doi.org/10.1594/pangaea.833129 https://doi.pangaea.de/10.1594/PANGAEA.833129 |
long_lat |
ENVELOPE(-63.033,-63.033,-64.867,-64.867) |
geographic |
Pacific Patagonia Ricardo |
geographic_facet |
Pacific Patagonia Ricardo |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_relation |
https://dx.doi.org/10.1029/2006pa001308 https://dx.doi.org/10.1016/0033-5894(87)90046-9 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.833129 https://doi.org/10.1029/2006pa001308 https://doi.org/10.1016/0033-5894(87)90046-9 |
_version_ |
1766031530764795904 |