Title :

South African dust contribution to the high southern latitudes and East Antarctica during interglacial stages

Author(s) :

Gili, Stefania [Auteur]
Vanderstraeten, Aubry [Auteur]
Laboratoire d’Océanologie et de Géosciences (LOG) - UMR 8187 [LOG]
Chaput, Amélie [Auteur]
King, James [Auteur]
Gaiero, Diego M. [Auteur]
Delmonte, Barbara [Auteur]
Vallelonga, Paul [Auteur]
Formenti, Paola [Auteur]
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
Di Biagio, Claudia [Auteur]
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
Cazanau, Mathieu [Auteur]
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
Pangui, Edouard [Auteur]
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
Doussin, Jean-François [Auteur]
Laboratoire Interuniversitaire des Systèmes Atmosphériques [LISA (UMR_7583)]
Mattielli, Nadine [Auteur]

Journal title :

Communications Earth & Environment

Publication date :

2022

HAL domain(s) :

Planète et Univers [physics]
Planète et Univers [physics]/Sciences de la Terre/Climatologie

English abstract : [en]

Mineral dust is a natural tracer of atmospheric composition and climate variability. Yet, there is still much to be known about the Southern Hemisphere dust cycle. Major efforts have attempted to solve the puzzle of the ...
Show more >Mineral dust is a natural tracer of atmospheric composition and climate variability. Yet, there is still much to be known about the Southern Hemisphere dust cycle. Major efforts have attempted to solve the puzzle of the origin of the potential source areas contributing dust to the Southern Ocean and East Antarctica. Here we present a comprehensive geochemical characterization of a source area, whose role as a dust supplier to high latitude environments has significantly been underestimated. Sediments collected within the major dust-producing areas along the Namibian coast in Southern Africa (Kuiseb, Omaruru and Huab river catchments and the Namib Sand Sea region), were analyzed for radiogenic isotope ratios and rare earth element concentrations. We find that during warm periods, the Southern African dust signature can be found in archives of the Southern Hemisphere, especially in the Atlantic sector of the Southern Ocean and peripheral areas of the East Antarctic plateau.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Collections :

• Laboratoire d'Océanologie et de Géosciences (LOG) - UMR 8187

Source :

Harvested from HAL