Data Description

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Citation:
Sachs, O et al. (2009): Benthic organic carbon flux and oxygen penetration depth in the Southern Ocean. doi:10.1594/PANGAEA.663056,
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:10.1016/j.dsr.2009.02.003
Abstract:
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 JW (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, doi:10.1016/S0967-0645(97)00002-7 *
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, doi:10.4319/lo.1998.43.3.0420 *
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, http://www.jstor.org/stable/53654 *
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, doi:10.1016/S0304-4203(09)90042-1 *
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, doi:10.1016/S0967-0637(00)00061-3 *
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, doi:10.1016/S0304-4203(09)90043-3 *
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, doi:10.2312/BzP_0073_1990 *
Smetacek, Victor; de Baar, Hein JW; 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, doi:10.1016/S0967-0645(96)00100-2 *
Other version:
Project(s):
Coverage:
Median Latitude: -61.995741 * Median Longitude: -20.027169 * South-bound Latitude: -78.244167 * 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: 0.0 m * Maximum DEPTH, sediment/rock: 0.0 m
Event(s):
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 * * Device: MultiCorer *
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 * * Device: MultiCorer *
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 * * Device: MultiCorer *
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Comment:
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
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEventMetadata
2LATITUDE *LatitudeGeocode
3LONGITUDE *LongitudeGeocode
4DATE/TIME *Date/TimeGeocode
5DEPTH, sediment/rock *DepthmGeocode
6Depth, bathymetric *Bathy depthmSchlüter, Michael *
7Gear *GearSchlüter, Michael *
8Sample Method *Sample MethodSchlüter, Michael *
9Season *SeasonSchlüter, Michael *
10Oxygen penetration depth *O2 pen depthmmSchlüter, Michael *Oxygen, microelectrode *
11Oxygen penetration depth *O2 pen depthmmSchlüter, Michael *Calculated *
12Oxygen penetration depth, standard deviation *O2 pen depth std devSchlüter, Michael *Calculated *
13Total mass flux per day *Mass fluxmg/m2/daySchlüter, Michael *Calculated *uncorrected
14Factor *FactorSchlüter, Michael *
15Carbon, organic flux *TOC fluxmg/m2/daySchlüter, Michael *Calculated *
16Biological province *Bio provSchlüter, Michael *
17Reference of data *Ref dataSchlüter, Michael *
18Uniform resource locator/link to reference *URL refSchlüter, Michael *
19Area/locality *AreaSchlüter, Michael *
20Comment *CommentSchlüter, Michael *
License:
Size:
1489 data points

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