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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 depth in the Southern Ocean. PANGAEA,, Supplement to: Sachs, O et al. (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,

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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.
Related to:
de Wit, R; Relexans, Jean-Claude; Bouvier, T; Moriarthy, David J W (1997): Microbial respiration and diffusive oxygen uptake of deep-sea sediments in the Southern Ocean (ANTARES-1 cruise). Deep Sea Research Part II: Topical Studies in Oceanography, 44(5), 1053-1069,
Rabouille, Christophe; Gaillard, Jean-Francois; Relexans, Jean-Claude; Tréguer, Paul; Vincendeau, Marie-Anne (1998): Recycling of organic matter in Antarctic sediments: A transect through the polar front in the Southern Ocean (Indian Sector). Limnology and Oceanography, 43(3), 420-432,
Rutgers van der Loeff, Michiel M (1990): Oxygen in pore waters of deep-sea sediments. Philosophical Transactions of the Royal Society of London, 331(1616), 69-84,
Rutgers van der Loeff, Michiel M; Berger, Gijs W (1991): Scavenging and particle flux: seasonal and regional variations in the Southern Ocean (Atlantic Sector). Marine Chemistry, 35(1-4), 553-568,
Sauter, Eberhard-Jürgen; Schlüter, Michael; Suess, Erwin (2001): Organic carbon flux and remineralization in surface sediments from the northern North Atlantic derived from pore-water oxygen microprofiles. Deep Sea Research Part I: Oceanographic Research Papers, 48(2), 529-553,
Schlüter, Michael (1990): Zur Frühdiagenese von organischem Kohlenstoff und Opal in Sedimenten des südlichen und östlichen Weddellmeeres. Geochemische Analyse und Modellierung (Early diagenesis of organic carbon and opal in sediments of the southern and eastern Weddell Sea. Geochemical analysis and modelling). Berichte zur Polarforschung = Reports on Polar Research, 73, 156 pp,
Schlüter, Michael (1991): Organic carbon flux and oxygen penetration into sediments of the Weddell Sea: indicators for regional differences in export production. Marine Chemistry, 35(1-4), 569-579,
Smetacek, Victor; de Baar, Hein J W; Bathmann, Ulrich; Lochte, Karin; Rutgers van der Loeff, Michiel M (1997): Ecology and biogeochemistry of the Antarctic circumpolar current during austral spring: Southern Ocean JGOFS Cruise ANT X/6 of R.V. Polarstern. Deep Sea Research Part II: Topical Studies in Oceanography, 44(1-2), 1-21,
German Science Foundation (DFG), grant/award no. 5472008: Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas
Median Latitude: -61.995740 * Median Longitude: -20.027168 * South-bound Latitude: -78.244160 * West-bound Longitude: -120.929500 * North-bound Latitude: -42.000239 * East-bound Longitude: 61.002178
Date/Time Start: 1986-01-12T00:00:00 * Date/Time End: 2008-01-29T00:00:00
Minimum DEPTH, sediment/rock: m * Maximum DEPTH, sediment/rock: m
KTB-06 (M3) * Latitude: -51.016258 * Longitude: 61.002178 * Date/Time: 1993-04-14T00:00:00 * Elevation: -4710.0 m * Campaign: ECOFER * Basis: Le Suroît * Method/Device: MultiCorer (MUC)
KTB-11 (H1) * Latitude: -48.016553 * Longitude: 57.016433 * Date/Time: 1993-04-19T00:00:00 * Elevation: -4395.0 m * Campaign: ECOFER * Basis: Le Suroît * Method/Device: MultiCorer (MUC)
KTB-13 (H2) * Latitude: -50.000253 * Longitude: 57.016556 * Date/Time: 1993-04-20T00:00:00 * Elevation: -4600.0 m * Campaign: ECOFER * Basis: Le Suroît * Method/Device: MultiCorer (MUC)
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
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Latitude of eventLatitude
3Longitude of eventLongitude
5DEPTH, sediment/rockDepthmGeocode
6Depth, bathymetricBathy depthmSchlüter, Michael
7GearGearSchlüter, Michael
8Sample methodSample methodSchlüter, Michael
9SeasonSeasonSchlüter, Michael
10Oxygen penetration depthOPD depthmmSchlüter, MichaelOxygen, microelectrode
11Oxygen penetration depthOPD depthmmSchlüter, MichaelCalculated
12Oxygen penetration depth, standard deviationOPD std dev±Schlüter, MichaelCalculated
13Total mass, flux per dayMass fluxmg/m2/daySchlüter, MichaelCalculateduncorrected
14FactorFactorSchlüter, Michael
15Carbon, organic, fluxTOC fluxmg/m2/daySchlüter, MichaelCalculated
16Biological provinceBio provSchlüter, Michael
17Reference of dataRef dataSchlüter, Michael
18Uniform resource locator/link to referenceURL refSchlüter, Michael
19Area/localityAreaSchlüter, Michael
20CommentCommentSchlüter, Michael
1489 data points

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