(Table 2) 230Th, 230Th xs and 232Th concentrations in dissolved, particulate and total (dissolved+small particles) for all KEOPS stations, Marion Dufresne cruise MD145 ...

• Main Authors: Venchiarutti, Célia, Jeandel, Catherine, Roy-Barman, Matthieu
• Format: Dataset
• Language: English
• Published: PANGAEA 2008
• Subjects: Event label; Date/Time of event; Latitude of event; Longitude of event; DEPTH, water; Thorium-230, dissolved; Thorium-230, dissolved, standard deviation; Thorium-230 excess, dissolved; Thorium-230 excess, dissolved, standard deviation; Thorium-232, dissolved; Thorium-232, dissolved, standard deviation; Thorium-230, particulate; Thorium-230, particulate, standard deviation; Thorium-230 excess, particulate; Thorium-230 excess, particulate, standard deviation; Thorium-232, particulate; Thorium-232, particulate, standard deviation; Thorium-230; Thorium-230, standard deviation; Thorium-230 excess; Thorium-230 excess, standard deviation; Thorium-232; Thorium-232, standard deviation; CTD/Rosette; MD145; Marion Dufresne 1995; Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158; Antarc*; Antarctic; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.858527; https://doi.pangaea.de/10.1594/PANGAEA.858527

In the context of the KErguelen Ocean and Plateau compared Study (KEOPS, 19 January-13 February 2005), particle dynamics were investigated using thorium isotope measurements over and off the Kerguelen plateau. Dissolved and particulate 230Th and 232Th samples were collected at nine stations. Dissolved excess 230Th concentrations (230Thxs) vary from 0.5 to 20.8 fg/kg and particulate 230Thxs concentrations from 0.1 to 10.0 fg/kg. Dissolved and particulate 232Th concentration ranges are 16.8-450.2 pg/kg and 3.8-502.8 pg/kg, respectively. The 230Thxs concentrations increase linearly with depth down to the bottom at most of the plateau stations and down to 1000 m at the off-plateau stations. This linear trend is observed down to the bottom (1550 m) at Kerfix, the open-ocean "upstream" station located west of the Kerguelen plateau. A simple reversible scavenging model applied to these data allowed the estimation of adsorption rate constant (k1~=0.2-0.8 per year), desorption rate constant (k-1~=1-8 per year) and ... : Supplement to: Venchiarutti, Célia; Jeandel, Catherine; Roy-Barman, Matthieu (2008): Particle dynamics study in the wake of Kerguelen Island using thorium isotopes. Deep Sea Research Part I: Oceanographic Research Papers, 55(10), 1343-1363 ...