Benthic organic carbon flux and oxygen penetration depth in the Southern Ocean
Cobertura |
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 m * MAXIMUM DEPTH, sediment/rock: 0 m |
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Data(s) |
20/02/2009
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Resumo |
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. |
Formato |
text/tab-separated-values, 1489 data points |
Identificador |
https://doi.pangaea.de/10.1594/PANGAEA.663056 doi:10.1594/PANGAEA.663056 |
Idioma(s) |
en |
Publicador |
PANGAEA |
Relação |
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 http://store.pangaea.de/Publications/SachsO_et_al_2009/SachsO_et_al_2009.zip |
Direitos |
CC-BY: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted |
Fonte |
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 |
Palavras-Chave | #Adelaide Island; Agulhas Basin; Amundsen Sea; Antarctic Peninsula; ANT-V/4; ANT-VI/2; ANT-VI/3; ANT-VIII/3; ANT-VIII/6; ANT-X/5; ANT-X/6; ANT-XI/3; ANT-XXI/4; ANT-XXIV/2; Anvers Island; Area/locality; Atka Bay; Atlantic Ridge; AWI_Paleo; B_LANDER; Barents Sea; BC; Bellingshausen Sea; Benthic Oxygen Lander System; Biological province; BOLAS; Bottom lander; Box corer; Bransfield Strait; Calculated; Camp Norway; Carbon, organic flux; Comment; CTD/Rosette; CTD-RO; DATE/TIME; Depth, bathymetric; DEPTH, sediment/rock; DFG-Schwerpunktprogramm 1158 - Antarktisforschung; DFG-SPP1158; Drake Passage; Eastern Weddell Sea, Southern Ocean; ECOFER; Event label; Factor; Filchner Shelf; Filchner Trough; Fram Strait; Gear; Giant box corer; GKG; Gravity corer (Kiel type); H1; H2; Halley Bay; Kapp Norvegia; KTB-06; KTB-11; KTB-13; KTB-16; KTB-19; KTB-23; KTB-26; KTB-28; KTB-33; Latitude of event; Lazarev Sea; Le Suroît; Longitude of event; Lyddan Island; M3; Marguerite Bay; MUC; MultiCorer; Oxygen, microelectrode; Oxygen penetration depth; Oxygen penetration depth, standard deviation; Paleoenvironmental Reconstructions from Marine Sediments @ AWI; Polarstern; PS10; PS10/672; PS10/675; PS10/678; PS10/684; PS10/686; PS10/688; PS10/690; PS10/694; PS10/697; PS10/699; PS10/701; PS10/703; PS10/707; PS10/711; PS10/719; PS10/725; PS10/738; PS10/740; PS10/748; PS10/757; PS10/760; PS10/762; PS10/766; PS10/778; PS10/782; PS10/784; PS10/794; PS10/804; PS10/813; PS10/816; PS10/818; PS10/820; PS10/824; PS12; PS12/116; PS12/128; PS12/143; PS12/186; PS12/193; PS12/201; PS12/300; PS12/310; PS12/312; PS12/319; PS12/336; PS12/338; PS12/340; PS12/348; PS12/374; PS12/380; PS12/458; PS12/465; PS12/472; PS12/486; PS12/490; PS12/526; PS1472-1; PS1474-1; PS1475-1; PS1477-1; PS1478-1; PS1479-1; PS1480-2; PS1481-2; PS1482-2; PS1483-2; PS1484-2; PS1485-1; PS1486-2; PS1487-1; PS1488-2; PS1489-3; PS1490-2; PS1491-3; PS1492-1; PS1493-2; PS1494-3; PS1495-1; PS1496-2; PS1498-1; PS1499-2; PS1500-2; PS1501-1; PS1502-1; PS1505-1; PS1506-2; PS1507-2; PS1508-2; PS1509-2; PS1537-2; PS1543-1; PS1549-1; PS1555-2; PS1557-1; PS1565-3; PS1590-1; PS1595-2; PS1596-2; PS1599-2; PS16; PS16/267; PS16/281; PS16/294; PS16/306; PS16/311; PS16/321; PS16/337; PS16/342; PS16/362; PS16/515; PS16/516; PS16/540; PS16/549; PS16/559; PS1605-2; PS1606-2; PS1607-2; PS1611-4; PS1622-2; PS1625-2; PS1635-3; PS1636-2; PS1637-2; PS1638-2; PS1639-2; PS1645-2; PS1751-2; PS1755-7; PS1759-1; PS1765-1; PS1768-1; PS1772-6; PS1776-6; PS1777-7; PS1782-6; PS1811-1; PS1812-1; PS1823-5; PS1826-6; PS1832-4; PS22; PS22/712; PS22/714; PS22/721; PS22/769; PS22/773; PS22/776; PS22/786; PS22/788; PS22/790; PS22/791; PS22/797; PS22/802; PS22/803; PS22/804; PS22/805; PS22/810; PS22/812; PS22/813; PS22/814; PS22/815; PS22/816; PS22/860; PS22/872; PS22/876; PS22/891; PS22/899; PS22/902; PS22/917; PS22/941; PS22/947; PS22/973; PS22 06AQANTX_5; PS2257-1; PS2258-1; PS2262-1; PS2276-2; PS2278-5; PS2280-1; PS2288-1; PS2290-1; PS2292-1; PS2293-1; PS2299-1; PS2304-2; PS2305-1; PS2306-1; PS2307-2; PS2312-1; PS2314-1; PS2315-1; PS2316-1; PS2317-1; PS2318-1; PS2357-2; PS2361-1; PS2362-1; PS2365-1; PS2365-2; PS2366-1; PS2367-1; PS2370-4; PS2371-1; PS2372-1; PS2376-1; PS2376-4; PS2522-1; PS2527-1; PS2528-1; PS2537-1; PS2538-1; PS2539-2; PS2542-1; PS2543-3; PS2546-1; PS2547-2; PS2548-2; PS2550-1; PS2553-2; PS2556-1; PS29; PS29/010; PS29/021; PS29/022; PS29/045; PS29/046; PS29/047; PS29/050; PS29/051; PS29/062; PS29/063; PS29/064; PS29/066; PS29/070; PS29/075; PS65; PS65/594-3; PS65/596-2; PS65/598-1; PS65/600-1; PS65/600-2; PS65/701-2; PS65/703-1; PS65/703-2; PS65/705-1; PS71/013-12; PS71/013-2; PS71/017-12; PS71/033-19; PS71/039-10; PS71/039-4; PS71/047-1; PS71/084-1; PS71/085-1; PS71/085-5; PS71/090-2; PS71 ANDEEP-SYSTCO SCACE; Reference of data; S1; S2; S6; S7; S8; S9; Sample method; Scotia Sea, southwest Atlantic; Season; Shona Ridge; SL; South Atlantic Ocean; South Sandwich Basin; Total mass flux per day; Uniform resource locator/link to reference; Vestkapp; Weddell Sea; Wegener Canyon |
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