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

DOI

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.

Identifier
DOI https://doi.org/10.1594/PANGAEA.961706
Related Identifier IsSupplementTo https://doi.org/10.1029/2023GC011105
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.961706
Provenance
Creator van der Does, Michèlle ORCID logo; Lamy, Frank ORCID logo; Krätschmer, Stephan ORCID logo; Stuut, Jan-Berend W ORCID logo; Völker, Christoph (ORCID: 0000-0003-3032-114X); Werner, Martin ORCID logo; Winckler, Gisela
Publisher PANGAEA
Publication Year 2023
Rights Creative Commons Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Representation
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 4 datasets
Discipline Earth System Research
Spatial Coverage (-56.810W, -69.889S, 28.547E, 0.100N)
Temporal Coverage Begin 1988-03-04T00:00:00Z
Temporal Coverage End 2005-05-14T07:09:00Z