de.pangaea.dataset968898 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-07-15T20:27:50Z https://doi.pangaea.de/10.1594/PANGAEA.968898 <gco:CharacterString>Concentrations of export production indicators and corrected and non-corrected accumulation rates of indicators of opal, Carbonates, Fe, TOC and Barium excess from core PS97/093-2 over the past 1.4 Ma</gco:CharacterString> 2025-01-31T07:35:16 publication https://doi.org/10.1594/PANGAEA.968898 Toyos, Maria H
mtoyos@udec.cl
https://orcid.org/0000-0001-5827-6753 information author Lamy, Frank
frank.lamy@awi.de
https://orcid.org/0000-0001-5952-1765 information author Lange, Carina Beatriz
clange@udec.cl
https://orcid.org/0000-0002-2916-4207 information author Abell, Jordan T https://orcid.org/0000-0002-2458-8844 information author Lembke-Jene, Lester
Lester.Lembke-Jene@awi.de
https://orcid.org/0000-0002-6873-8533 information author Arz, Helge Wolfgang
helge.arz@io-warnemuende.de
https://orcid.org/0000-0002-1997-1718 information author Winckler, Gisela
winckler@ldeo.columbia.edu
https://orcid.org/0000-0001-8718-2684 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital Studying oceanic particle fluxes from sediment records is an important component of paleoceanography. Traditionally, we calculate these fluxes using a combination of linear sedimentation rates derived from age models and sediment density, known as age model-derived bulk mass accumulation rates (BMAR). However, BMAR and the resulting paleoceanographic interpretations may suffer from substantial errors if lateral redistribution of sediments is not considered. In fact, this is expected to be a common phenomenon in the Southern Ocean due to the strong bottom water circulation induced by the Antarctic Circumpolar Current. In the study associated to this dataset, we assess export production and its drivers over the past ~1.4 Myr near the Drake Passage entrance using BMAR of biogenic Barium, organic carbon, biogenic opal, calcium carbonate, and iron from sediment core PS97/093-2, all of which are corrected for lateral sediment redistribution (corr-BMAR). To quantify this correction, we explore the relationship between sortable silt as a bottom current strength proxy and 230Th-derived focusing factors as indicators of lateral redistribution of sediments, respectively. Therefore, this dataset includes the following data: Concentrations of export production indicators (opal, Carbonates, Fe, total organic carbon, and excess of Barium), dry bulk density, sortable silt (averaged between tie points), calculated focusing factors, and corrected and non-corrected accumulation rates of export production indicators of core PS97/093-2 over the past 1.4 million years. completed Accumulation rate Export Production focusing factor Paleoceanography paleoproductivity. Southern Ocean Subantarctic zone theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact Helmholtz_ChangingEarth Changing Earth – Sustaining our Future theme <gco:CharacterString>PANGAEA Project List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -70.27467 -70.27467 -57.49917 -57.49917 2016-03-20T17:30:00 2016-03-20T17:30:00 0.0 16.38 DEPTH, sediment/rock physicalMeasurement m m AGE physicalMeasurement ka BP ka BP Opal, biogenic silica physicalMeasurement wt% % % Calcium carbonate physicalMeasurement wt% % % Iron physicalMeasurement wt% % % Barium excess physicalMeasurement excessTi , wt% % % Carbon, organic, total physicalMeasurement wt% % % Density, dry bulk physicalMeasurement g/cm**3 g/cm**3 Sortable-silt mean physicalMeasurement averaged between age model tie points µm µm Focusing factor thematicClassification Calculated Accumulation rate, bulk mass physicalMeasurement g/cm**2/ka g/cm**2/ka Accumulation rate, bulk mass, opal physicalMeasurement g/cm**2/ka g/cm**2/ka Accumulation rate, bulk mass, calcium carbonate physicalMeasurement g/cm**2/ka g/cm**2/ka Accumulation rate, bulk mass, iron physicalMeasurement mg/cm**2/ka mg/cm**2/ka Accumulation rate, bulk mass, barium, excess physicalMeasurement mg/cm**2/ka mg/cm**2/ka Accumulation rate, bulk mass, carbon, organic, total physicalMeasurement mg/cm**2/ka mg/cm**2/ka Accumulation rate, bulk mass physicalMeasurement Corrected g/cm**2/ka g/cm**2/ka Accumulation rate, bulk mass, standard error physicalMeasurement Corrected ± ± Accumulation rate, bulk mass, opal physicalMeasurement Corrected g/cm**2/ka g/cm**2/ka Accumulation rate, bulk mass, opal, standard error physicalMeasurement Corrected ± ± Accumulation rate, bulk mass, calcium carbonate physicalMeasurement Corrected g/cm**2/ka g/cm**2/ka Accumulation rate, bulk mass, calcium carbonate, standard error physicalMeasurement Corrected ± ± Accumulation rate, bulk mass, iron physicalMeasurement Corrected mg/cm**2/ka mg/cm**2/ka Accumulation rate, bulk mass, iron, standard error physicalMeasurement Corrected ± ± Accumulation rate, bulk mass, barium, excess physicalMeasurement Corrected mg/cm**2/ka mg/cm**2/ka Accumulation rate, bulk mass, barium, excess, standard error physicalMeasurement Corrected ± ± Accumulation rate, bulk mass, carbon, organic, total physicalMeasurement Corrected mg/cm**2/ka mg/cm**2/ka Accumulation rate, bulk mass, carbon, organic, total, standard error physicalMeasurement Corrected ± ± text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.968898?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: PS97/093-2 * LATITUDE: -57.499170 * LONGITUDE: -70.274670 * DATE/TIME: 2016-03-20T17:30:00 * ELEVATION: -3782.2 m * RECOVERY: 16.45 m * LOCATION: South Pacific Ocean * CAMPAIGN: PS97 * BASIS: Polarstern * METHOD/DEVICE: Piston corer 2016-03-20T17:30:00 Related to <gco:CharacterString>A New Perspective on Past Export Production in the Subantarctic South Pacific for the Last ∼1.4 Myr</gco:CharacterString> 2025-01-01 publication https://doi.org/10.1029/2024PA004929 Toyos, Maria H
mtoyos@udec.cl
https://orcid.org/0000-0001-5827-6753 information author Lamy, Frank
frank.lamy@awi.de
https://orcid.org/0000-0001-5952-1765 information author Lange, Carina Beatriz
clange@udec.cl
https://orcid.org/0000-0002-2916-4207 information author Abell, Jordan T https://orcid.org/0000-0002-2458-8844 information author Lembke-Jene, Lester
Lester.Lembke-Jene@awi.de
https://orcid.org/0000-0002-6873-8533 information author Arz, Helge Wolfgang
helge.arz@io-warnemuende.de
https://orcid.org/0000-0002-1997-1718 information author Winckler, Gisela
winckler@ldeo.columbia.edu
https://orcid.org/0000-0001-8718-2684 information author documentDigital Paleoceanography and Paleoclimatology 40(2) e2024PA004929