6533b7d2fe1ef96bd125e2a1

RESEARCH PRODUCT

Geochemical implications for changing dust supply by the Indian Monsoon system to the Arabian Sea during the last glacial cycle

Dieter Garbe-schönbergDirk C LeuschnerFrank SirockoGeorg Schettler

subject

Total organic carbonMonsoon of South AsiaOceanographyProductivity (ecology)UpwellingSediment550 - Earth sciencesGlacial periodMonsoonChemical compositionGeology

description

Element concentrations of 43 elements as well as inorganic and organic carbon content of sediment core 70KL from the western Arabian Sea were measured with high (1 cm) sample resolution. Principal components of the sediment’s chemical composition were determined with the help of statistical principle component analysis. These components are representing the major environmental factors at the site. The most important processes controlling the observed variations are the changing lithogenic influx derived from the major wind systems of the region (i.e., the Arabian northwesterly winds, the northeast winter monsoon and the southwest summer monsoon), summer monsoon associated upwelling and biogenic productivity as well as the redox conditions at the sediment-water interface.

http://gfzpublic.gfz-potsdam.de/pubman/item/escidoc:230559