Particle flux data from sediment traps deployed south of -47 (2004-2005)

• Other Authors: AODN Data Manager (distributor), CSIRO Oceans and Atmosphere (hasAssociationWith), Data Officer (distributor), IMAS Data Manager (hasAssociationWith), Institute for Marine and Antarctic Studies (IMAS), University of Tasmania (UTAS) (resourceProvider), Shadwick, Elizabeth (pointOfContact), Shadwick, Elizabeth (hasPrincipalInvestigator), Wynn-Edwards, Cathryn (collaborator)
• Format: Dataset
• Language: unknown
• Published: Australian Ocean Data Network
• Subjects: oceans; Ocean Chemistry; Biogeochemical Cycles; Mass_flux; Total particulate carbon flux; particulate inorganic carbon flux; particulate organic carbon flux; biogenic silica flux; CARBON; EARTH SCIENCE; AGRICULTURE; SOILS; ORGANIC MATTER; Global / Oceans | Global / Oceans | Southern Ocean; Chemical Oceanography; EARTH SCIENCES; OCEANOGRAPHY; Antarctic; Sarmiento; Southern Ocean; Antarc*; Antarctic Climate and Ecosystems Cooperative Research Centre
• Online Access: https://researchdata.edu.au/particle-flux-sediment-2004-2005/2919952; https://doi.org/10.25959/c9fc-wb33

Maintenance and Update Frequency: notPlanned Statement: McLane-PARFLUX-Mark78H-21 sediment traps, 21 cups CHN by elemental analysis at Central Science Lab PIC by coloumetry POC = C - PIC Credit We acknowledge support from the agencies Antarctic Climate and Ecosystems Cooperative Research Centre (ACE CRC) and University of Tasmania (UTAS). We also acknowledge the support of Dr Thomas Rodemann of Central Science Lab, UTAS for elemental analysis. At the inception of our project, no study had examined particle fluxes in the Subantarctic Zone (SAZ) of the Southern Ocean, despite the fact that the SAZ represents a large portion of the total area of the Southern Ocean, serve as a strong sink for atmospheric (~1G t C yr-1 [Metzl et al., 1999]), and is central to hypotheses linking particle fluxes and climate change [Francois et al., 1997; Kumar et al., 1995; Sigman et al., 1999]. The SAZ serves as an interface between the cold nutrient-rich waters to its south and the nutrient-depleted subtropical gyres to its north. SAZ upper layers are marked by a thick layer of relatively homogenous Subantarctic Mode Water (SAMW), which overlies Antarctic Intermediate Water (AAIW). Both water masses are subducted northward beneath the subtropical gyres. Thus particles leaving the surface in these regions contribute to carbon redistribution via both the fraction that reaches the deep sea by settling and the fraction that is remineralized within SAMW or AAIW and subsequently subducted. The SAZ exhibits surface water carbon dioxide partial pressures well below atmospheric equilibrium, but PFZ waters are closer to atmospheric equilibrium in this sector [Metal et al., 1999; Poppet al., 1999]. The relative physical and biological contributions to these carbon dioxide partial pressure variations are unclear, but it is important to determine them because physical and biological carbon dioxide transfers are expected to show different responses to climate change [ Matear et al., 1999; Sarmiento and LeQuere, 1996]. For these reasons we ...