Benthic organic carbon flux and oxygen penetration depth in the Southern Ocean, supplement to: Sachs, Oliver; Sauter, Eberhard-Jürgen; Schlüter, Michael; Rutgers van der Loeff, Michiel M; Jerosch, Kerstin; Holby, Ola (2009): Benthic organic carbon flux and oxygen penetration reflect different plankton provinces in the Southern Ocean. Deep Sea Research Part I: Oceanographic Research Papers, 56(8), 1319-1335

DOI

For the investigation of organic carbon fluxes reaching the seafloor, oxygen microprofiles were measured at 145 sites in different sub-regions of the Southern Ocean. At eleven sites, an in situ oxygen microprofiler was deployed for the measurement of oxygen profiles and the calculation of organic carbon fluxes. At four sites, both in situ and ex situ data were determined for high latitudes. Based on this dataset as well as on previous published data, a relationship was established for the estimation of fluxes derived by ex situ measured O2 profiles. The fluxes of labile organic matter range from 0.5 to 37.1 mgC m**2/day. The high values determined by in situ measurements were observed in the Polar Front region (water depth of more than 4290 m) and are comparable to organic matter fluxes observed for high-productivity, upwelling areas like off West Africa. The oxygen penetration depth, which reflects the long-term organic matter flux to the sediment, was correlated with assemblages of key diatom species. In the Scotia Sea (~3000 m water depth), oxygen penetration depths of less than 15 cm were observed, indicating high benthic organic carbon fluxes. In contrast, the oxic zone extends down to several decimeters in abyssal sediments of the Weddell Sea and the southeastern South Atlantic. The regional pattern of organic carbon fluxes derived from micro-sensor data suggest that episodic and seasonal sedimentation pulses are important for the carbon supply to the seafloor of the deep Southern Ocean. see other version for graphs in high resolution. Data are related to the project DOMINO (Dynamics of benthic organic matter fluxes in polar deep-ocean environments), hdl:10013/epic.34113.d001

Identifier
DOI https://doi.org/10.1594/PANGAEA.663056
Related Identifier https://doi.org/10.1016/j.dsr.2009.02.003
Related Identifier https://doi.org/10.1016/S0967-0645(97)00002-7
Related Identifier https://doi.org/10.4319/lo.1998.43.3.0420
Related Identifier http://www.jstor.org/stable/53654
Related Identifier https://doi.org/10.1016/S0304-4203(09)90042-1
Related Identifier https://doi.org/10.1016/S0967-0637(00)00061-3
Related Identifier https://doi.org/10.1016/S0304-4203(09)90043-3
Related Identifier https://doi.org/10.2312/BzP_0073_1990
Related Identifier https://doi.org/10.1016/S0967-0645(96)00100-2
Related Identifier http://store.pangaea.de/Publications/SachsO_et_al_2009/SachsO_et_al_2009.zip
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.663056
Provenance
Creator Sachs, Oliver; Sauter, Eberhard-Jürgen; Schlüter, Michael; Rutgers van der Loeff, Michiel M; Jerosch, Kerstin; Holby, Ola
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2009
Funding Reference German Science Foundation
Rights Creative Commons Attribution 3.0 Unported
OpenAccess true
Representation
Language English
Resource Type Supplementary Dataset
Format text/tab-separated-values
Size 1489 data points
Discipline Earth System Research
Spatial Coverage (-120.930W, -78.244S, 61.002E, -42.000N); Barents Sea; Filchner Trough; Atka Bay; Kapp Norvegia; Camp Norway; Vestkapp; Lyddan Island; Halley Bay; Weddell Sea; Eastern Weddell Sea, Southern Ocean; Drake Passage; Bransfield Strait; Adelaide Island; Anvers Island; Antarctic Peninsula; Wegener Canyon; Agulhas Basin; Shona Ridge; Atlantic Ridge; South Sandwich Basin; Filchner Shelf; Fram Strait; Lazarev Sea; South Atlantic Ocean; Scotia Sea, southwest Atlantic; Marguerite Bay; Bellingshausen Sea; Amundsen Sea
Temporal Coverage Begin 1986-01-12T00:00:00Z
Temporal Coverage End 2008-01-29T00:00:00Z