Grain-size distributions, End-member modelling and Th-fluxes of South Atlantic surface sediments

We present the characteristics of the lithogenic components of seafloor surface sediments covering the entire South Atlantic Ocean (from the equator to Antarctica). These samples were collected by multiple seagoing expeditions between 1988 and 2005. By using end-member modelling on the multi-modal g...

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Main Authors: van der Does, Michèlle, Lamy, Frank, Krätschmer, Stephan, Stuut, Jan-Berend W, Völker, Christoph, Werner, Martin, Winckler, Gisela
Format: Dataset
Language:English
Published: PANGAEA 2023
Subjects:
dust
Dust flux
end-member modelling
grain size distribution
IRD
Particle size distribution
South Atlantic
thorium normalization
Antarc*
Antarctica
South Atlantic Ocean
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.961706
https://doi.org/10.1594/PANGAEA.961706
id ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.961706
record_format openpolar
spelling ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.961706 2024-06-02T07:57:42+00:00 Grain-size distributions, End-member modelling and Th-fluxes of South Atlantic surface sediments van der Does, Michèlle Lamy, Frank Krätschmer, Stephan Stuut, Jan-Berend W Völker, Christoph Werner, Martin Winckler, Gisela MEDIAN LATITUDE: -40.264187 * MEDIAN LONGITUDE: -7.197832 * SOUTH-BOUND LATITUDE: -69.889000 * WEST-BOUND LONGITUDE: -56.810000 * NORTH-BOUND LATITUDE: 0.100000 * EAST-BOUND LONGITUDE: 28.546670 * DATE/TIME START: 1988-03-04T00:00:00 * DATE/TIME END: 2005-05-14T07:09:00 2023 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.961706 https://doi.org/10.1594/PANGAEA.961706 en eng PANGAEA van der Does, Michèlle; Lamy, Frank; Krätschmer, Stephan; Stuut, Jan-Berend W; Völker, Christoph; Werner, Martin; Schwarz, Roseanne; Fleisher, Marty; Winckler, Gisela (2024): Late Holocene Dust Deposition Fluxes Over the Entire South Atlantic Ocean. Geochemistry, Geophysics, Geosystems, 25(1), e2023GC011105, https://doi.org/10.1029/2023GC011105 https://doi.pangaea.de/10.1594/PANGAEA.961706 https://doi.org/10.1594/PANGAEA.961706 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess dust Dust flux end-member modelling grain size distribution IRD Particle size distribution South Atlantic thorium normalization Dataset 2023 ftpangaea https://doi.org/10.1594/PANGAEA.96170610.1029/2023GC011105 2024-05-07T23:45:53Z We present the characteristics of the lithogenic components of seafloor surface sediments covering the entire South Atlantic Ocean (from the equator to Antarctica). These samples were collected by multiple seagoing expeditions between 1988 and 2005. By using end-member modelling on the multi-modal grain-size distributions, we decomposed the lithogenic fraction into a fine- and coarse-grained dust component, current-sorted sediments and IRD. By multiplying these specific components with 230Th-normalized lithogenic fluxes, we obtained specific fluxes for these four fractions. This allows us to study dust deposition over the remote open ocean more specifically. Dataset Antarc* Antarctica South Atlantic Ocean PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-56.810000,28.546670,0.100000,-69.889000)
institution Open Polar
collection PANGAEA - Data Publisher for Earth & Environmental Science
op_collection_id ftpangaea
language English
topic dust
Dust flux
end-member modelling
grain size distribution
IRD
Particle size distribution
South Atlantic
thorium normalization
spellingShingle dust
Dust flux
end-member modelling
grain size distribution
IRD
Particle size distribution
South Atlantic
thorium normalization
van der Does, Michèlle
Lamy, Frank
Krätschmer, Stephan
Stuut, Jan-Berend W
Völker, Christoph
Werner, Martin
Winckler, Gisela
Grain-size distributions, End-member modelling and Th-fluxes of South Atlantic surface sediments
topic_facet dust
Dust flux
end-member modelling
grain size distribution
IRD
Particle size distribution
South Atlantic
thorium normalization
description We present the characteristics of the lithogenic components of seafloor surface sediments covering the entire South Atlantic Ocean (from the equator to Antarctica). These samples were collected by multiple seagoing expeditions between 1988 and 2005. By using end-member modelling on the multi-modal grain-size distributions, we decomposed the lithogenic fraction into a fine- and coarse-grained dust component, current-sorted sediments and IRD. By multiplying these specific components with 230Th-normalized lithogenic fluxes, we obtained specific fluxes for these four fractions. This allows us to study dust deposition over the remote open ocean more specifically.
format Dataset
author van der Does, Michèlle
Lamy, Frank
Krätschmer, Stephan
Stuut, Jan-Berend W
Völker, Christoph
Werner, Martin
Winckler, Gisela
author_facet van der Does, Michèlle
Lamy, Frank
Krätschmer, Stephan
Stuut, Jan-Berend W
Völker, Christoph
Werner, Martin
Winckler, Gisela
author_sort van der Does, Michèlle
title Grain-size distributions, End-member modelling and Th-fluxes of South Atlantic surface sediments
title_short Grain-size distributions, End-member modelling and Th-fluxes of South Atlantic surface sediments
title_full Grain-size distributions, End-member modelling and Th-fluxes of South Atlantic surface sediments
title_fullStr Grain-size distributions, End-member modelling and Th-fluxes of South Atlantic surface sediments
title_full_unstemmed Grain-size distributions, End-member modelling and Th-fluxes of South Atlantic surface sediments
title_sort grain-size distributions, end-member modelling and th-fluxes of south atlantic surface sediments
publisher PANGAEA
publishDate 2023
url https://doi.pangaea.de/10.1594/PANGAEA.961706
https://doi.org/10.1594/PANGAEA.961706
op_coverage MEDIAN LATITUDE: -40.264187 * MEDIAN LONGITUDE: -7.197832 * SOUTH-BOUND LATITUDE: -69.889000 * WEST-BOUND LONGITUDE: -56.810000 * NORTH-BOUND LATITUDE: 0.100000 * EAST-BOUND LONGITUDE: 28.546670 * DATE/TIME START: 1988-03-04T00:00:00 * DATE/TIME END: 2005-05-14T07:09:00
long_lat ENVELOPE(-56.810000,28.546670,0.100000,-69.889000)
genre Antarc*
Antarctica
South Atlantic Ocean
genre_facet Antarc*
Antarctica
South Atlantic Ocean
op_relation van der Does, Michèlle; Lamy, Frank; Krätschmer, Stephan; Stuut, Jan-Berend W; Völker, Christoph; Werner, Martin; Schwarz, Roseanne; Fleisher, Marty; Winckler, Gisela (2024): Late Holocene Dust Deposition Fluxes Over the Entire South Atlantic Ocean. Geochemistry, Geophysics, Geosystems, 25(1), e2023GC011105, https://doi.org/10.1029/2023GC011105
https://doi.pangaea.de/10.1594/PANGAEA.961706
https://doi.org/10.1594/PANGAEA.961706
op_rights CC-BY-4.0: Creative Commons Attribution 4.0 International
Access constraints: unrestricted
info:eu-repo/semantics/openAccess
op_doi https://doi.org/10.1594/PANGAEA.96170610.1029/2023GC011105
_version_ 1800740888581767168

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