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
type: Dataset
conforms to: http://mlcommons.org/croissant/1.0
creator: Maria H Toyos
creator: Frank Lamy
creator: Carina Beatriz Lange
creator: Jordan T Abell
creator: Lester Lembke-Jene
creator: Helge Wolfgang Arz
creator: Gisela Winckler
publisher: PANGAEA
  type: Organization
  disambiguating description: Data Publisher for Earth & Environmental Science
included in data catalog: PANGAEA
  type: DataCatalog
  disambiguating description: Data Publisher for Earth & Environmental Science
date published: 2025-01-31
additional type: dataset
description: 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.
abstract: 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.
citation: A New Perspective on Past Export Production in the Subantarctic South Pacific for the Last ∼1.4 Myr
spatial coverage: Place
  geo: GeoCoordinates
    latitude: -57.49917
    longitude: -70.27467
temporal coverage: 2016-03-20T17:30:00
funding: FONDAP-IDEAL
  type: MonetaryGrant
  funder: Austral University of Chile
funding: EXC 2077: The Ocean Floor – Earth's Uncharted Interface
  type: MonetaryGrant
  funder: German Research Foundation
size: QuantitativeValue
  value: 6188.0
  unit text: data points
variable measured: DEPTH, sediment/rock
  type: PropertyValue
  unit text: m
  subject of: DefinedTermSet
    has defined term: depth
    has defined term: sediment
    has defined term: rock
    has defined term: Length
variable measured: AGE
  type: PropertyValue
  unit text: ka BP
  subject of: DefinedTermSet
    has defined term: age
    has defined term: Time
variable measured: Opal, biogenic silica
  type: PropertyValue
  unit text: %
  description: wt%
  subject of: DefinedTermSet
    has defined term: opal
    has defined term: biogenic silica
    has defined term: Dimensionless Ratio
variable measured: Calcium carbonate
  type: PropertyValue
  unit text: %
  description: wt%
  subject of: DefinedTermSet
    has defined term: calcium carbonate
    has defined term: Dimensionless Ratio
variable measured: Iron
  type: PropertyValue
  unit text: %
  description: wt%
  subject of: DefinedTermSet
    has defined term: Dimensionless Ratio
variable measured: Barium excess
  type: PropertyValue
  unit text: %
  description: excessTi , wt%
  subject of: DefinedTermSet
    has defined term: Dimensionless Ratio
variable measured: Carbon, organic, total
  type: PropertyValue
  unit text: %
  description: wt%
  subject of: DefinedTermSet
    has defined term: carbon
    has defined term: organic
    has defined term: total
    has defined term: Dimensionless Ratio
variable measured: Density, dry bulk
  type: PropertyValue
  unit text: g/cm**3
  subject of: DefinedTermSet
    has defined term: Density
variable measured: Sortable-silt mean
  type: PropertyValue
  unit text: µm
  description: averaged between age model tie points
  subject of: DefinedTermSet
    has defined term: Length
variable measured: Focusing factor
  type: PropertyValue
  measurement technique: Calculated
variable measured: Accumulation rate, bulk mass
  type: PropertyValue
  unit text: g/cm**2/ka
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
variable measured: Accumulation rate, bulk mass, opal
  type: PropertyValue
  unit text: g/cm**2/ka
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: opal
variable measured: Accumulation rate, bulk mass, calcium carbonate
  type: PropertyValue
  unit text: g/cm**2/ka
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: calcium carbonate
variable measured: Accumulation rate, bulk mass, iron
  type: PropertyValue
  unit text: mg/cm**2/ka
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: Iron
variable measured: Accumulation rate, bulk mass, barium, excess
  type: PropertyValue
  unit text: mg/cm**2/ka
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: barium
variable measured: Accumulation rate, bulk mass, carbon, organic, total
  type: PropertyValue
  unit text: mg/cm**2/ka
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: carbon
    has defined term: organic
    has defined term: total
variable measured: Accumulation rate, bulk mass
  type: PropertyValue
  unit text: g/cm**2/ka
  measurement technique: Corrected
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
variable measured: Accumulation rate, bulk mass, standard error
  type: PropertyValue
  unit text: ±
  measurement technique: Corrected
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: standard error
      type: DefinedTerm
      alternate name: std e
variable measured: Accumulation rate, bulk mass, opal
  type: PropertyValue
  unit text: g/cm**2/ka
  measurement technique: Corrected
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: opal
variable measured: Accumulation rate, bulk mass, opal, standard error
  type: PropertyValue
  unit text: ±
  measurement technique: Corrected
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: opal
    has defined term: standard error
      type: DefinedTerm
      alternate name: std e
variable measured: Accumulation rate, bulk mass, calcium carbonate
  type: PropertyValue
  unit text: g/cm**2/ka
  measurement technique: Corrected
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: calcium carbonate
variable measured: Accumulation rate, bulk mass, calcium carbonate, standard error
  type: PropertyValue
  unit text: ±
  measurement technique: Corrected
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: calcium carbonate
    has defined term: standard error
      type: DefinedTerm
      alternate name: std e
variable measured: Accumulation rate, bulk mass, iron
  type: PropertyValue
  unit text: mg/cm**2/ka
  measurement technique: Corrected
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: Iron
variable measured: Accumulation rate, bulk mass, iron, standard error
  type: PropertyValue
  unit text: ±
  measurement technique: Corrected
  subject of: DefinedTermSet
    has defined term: Accumulation Rate
    has defined term: Iron
    has defined term: standard error
      type: DefinedTerm
      alternate name: std e
variable measured: Accumulation rate, bulk mass, barium, excess, standard error
variable measured: Accumulation rate, bulk mass, carbon, organic, total, standard error
keywords: Accumulation rate; Export Production; focusing factor; Paleoceanography; paleoproductivity.; Southern Ocean; Subantarctic zone
license: https://creativecommons.org/licenses/by/4.0/
conditions of access: unrestricted
is accessible for free: true
language: en
distribution: data matrix.tab
distribution: FileObject

Maria H Toyos
type: Person
family name: Toyos
given name: Maria H
affiliation: MARUM - Center for Marine Environmental Sciences, University Bremen
affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

MARUM - Center for Marine Environmental Sciences, University Bremen
type: Organization
alternate name: MARUM

Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam
type: Organization
alternate name: AWI Potsdam
name: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven
alternate name: AWI

Frank Lamy
type: Person
family name: Lamy
given name: Frank
affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Carina Beatriz Lange
type: Person
family name: Lange
given name: Carina Beatriz
affiliation: Departamento de Oceanografia, Universidad de Conceptión

Departamento de Oceanografia, Universidad de Conceptión
type: Organization
alternate name: UDEC

Jordan T Abell
type: Person
family name: Abell
given name: Jordan T
affiliation: University of Arizona

University of Arizona
type: Organization
alternate name: UA

Lester Lembke-Jene
type: Person
family name: Lembke-Jene
given name: Lester
affiliation: Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Potsdam

Helge Wolfgang Arz
type: Person
family name: Arz
given name: Helge Wolfgang
affiliation: Leibniz Institute for Baltic Sea Research, Warnemünde

Leibniz Institute for Baltic Sea Research, Warnemünde
type: Organization
alternate name: IOW

Gisela Winckler
type: Person
family name: Winckler
given name: Gisela
affiliation: Lamont-Doherty Earth Observatory of Columbia University, New York

Lamont-Doherty Earth Observatory of Columbia University, New York
type: Organization
alternate name: LDEO

A New Perspective on Past Export Production in the Subantarctic South Pacific for the Last ∼1.4 Myr
type: CreativeWork
type: ScholarlyArticle
creator: Maria H Toyos
creator: Frank Lamy
creator: Carina Beatriz Lange
creator: Jordan T Abell
creator: Lester Lembke-Jene
creator: Helge Wolfgang Arz
creator: Gisela Winckler
date published: 2025
pagination: e2024PA004929
is part of: Paleoceanography and Paleoclimatology
  type: Periodical
  type: PublicationVolume
  volume number: 40(2)
additional type: journal article

Austral University of Chile
type: Organization
alternate name: UACh

German Research Foundation
type: Organization
alternate name: DFG

depth
type: DefinedTerm

Length
type: DefinedTerm
alternate name: L

age
type: DefinedTerm

Time
type: DefinedTerm
alternate name: T

biogenic silica
type: DefinedTerm

Dimensionless Ratio
type: DefinedTerm
alternate name: ψ

calcium carbonate
type: DefinedTerm

carbon
type: DefinedTerm
alternate name: C

Density
type: DefinedTerm

Iron
type: DefinedTerm

data matrix.tab
type: FileObject
type: DataDownload
encoding format: text/tab-separated-values

Accumulation rate, bulk mass, barium, excess
type: PropertyValue
unit text: mg/cm**2/ka
measurement technique: Corrected
subject of: DefinedTermSet
  has defined term: Accumulation Rate
  has defined term: barium

Accumulation rate, bulk mass, barium, excess, standard error
type: PropertyValue
unit text: ±
measurement technique: Corrected
subject of: DefinedTermSet
  has defined term: Accumulation Rate
  has defined term: barium
  has defined term: standard error
    type: DefinedTerm
    alternate name: std e

Accumulation rate, bulk mass, carbon, organic, total
type: PropertyValue
unit text: mg/cm**2/ka
measurement technique: Corrected
subject of: DefinedTermSet
  has defined term: Accumulation Rate
  has defined term: carbon
  has defined term: organic
  has defined term: total

Accumulation rate, bulk mass, carbon, organic, total, standard error
type: PropertyValue
unit text: ±
measurement technique: Corrected
subject of: DefinedTermSet
  has defined term: Accumulation Rate
  has defined term: carbon
  has defined term: organic
  has defined term: total
  has defined term: standard error
    type: DefinedTerm
    alternate name: std e

FileObject
type: DataDownload
encoding format: text/html