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Thunell, Robert C; Tappa, Eric (2013): Sediment Trap Data from the CARIACO Ocean Time Series (1995-2010). PANGAEA, https://doi.org/10.1594/PANGAEA.805397

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Abstract:
The Cariaco Basin is a 1400-m-deep depression approximately 160 km long by 70 km wide located off the central Venezuelan coast . It is connected to the Atlantic Ocean by a sill ~100-m-deep, and two slightly deeper channels that breech it; Canal Centinela (146-m-deep) and Canal de la Tortuge (135-m-deep). High surface production rates and restricted circulation result in anoxic waters below ca. 275 m. The depth of the oxycline varies between 250 and 320 m and is independent of density. Rather, fluctuations in oxycline depth appear to be due to lateral intrusions of Caribbean Sea water that are linked to eddies along the continental shelf. A mooring with five sediment traps (Z, A-D) is located in the eastern Cariaco Basin. Traps A-D have been in place since November 1995. Trap A is located in oxic waters at 226 ± 6 m. Trap B is located at 407 ± 3 m and Trap D is located at 1205 ± 3 m. Trap C was located at a depth of 880 ± 2 m from Jan. 1996 to Nov. 2000, and was moved to 807 ± 2 m in Nov. 2000. A fifth trap, Z, was added in November 2003 at 110 m for the first 6 months, and at 150 m thereafter. All five sediment traps are coneshaped with a 0.5 m**2 opening that is covered with a baffle top to reduce turbulence. The mooring is deployed for six-month intervals and each sample collection cup is filled with a buffered 3.2% formalin solution as a preservative for the accumulating organic matter. The cups are numbered 1-13, with cup 1 collecting for the two-week interval immediately following deployment, and cup 13 collecting for the 2 weeks immediately before recovery.
Related to:
Benitez-Nelson, Claudia; O'Neill Madden, Lauren; Styles, Renée M; Thunell, Robert C; Astor, Yrene (2007): Inorganic and organic sinking particulate phosphorus fluxes across the oxic/anoxic water column of Cariaco Basin, Venezuela. Marine Chemistry, 105, 90-100, https://doi.org/10.1016/j.marchem.2007.01.007
Thunell, Robert C; Benitez-Nelson, Claudia; Varela, Ramon; Astor, Yrene; Muller-Karger, Frank E (2007): Particulate Organic Carbon Fluxes Along Upwelling-Dominated Continental Margins: Rates and Mechanisms. Global Biogeochemical Cycles, 21, GB1022, https://doi.org/10.1029/2006GB002793
Thunell, Robert C; Llano, Martin; Collister, James; Muller-Karger, Frank E; Bohrer, R (2000): Organic carbon fluxes, degradation, and accumulation in an anoxic basin: Sediment trap results from the Cariaco Basin. Limnology and Oceanography, 45(2), 300-308, https://doi.org/10.4319/lo.2000.45.2.0300
Coverage:
Latitude: 10.500000 * Longitude: -64.670000
Date/Time Start: 1995-11-08T00:00:00 * Date/Time End: 2010-10-29T00:00:00
Minimum DEPTH, water: 152 m * Maximum DEPTH, water: 1210 m
Event(s):
CARIACO_Trap_1995 * Latitude: 10.500000 * Longitude: -64.670000 * Date/Time Start: 1995-11-01T00:00:00 * Date/Time End: 1996-04-30T00:00:00 * Location: Cariaco Basin * Device: Trap, sediment (TRAPS) * Comment: Mark-VII automated sediment trap
CARIACO_Trap_1996 * Latitude: 10.500000 * Longitude: -64.670000 * Date/Time Start: 1996-11-01T00:00:00 * Date/Time End: 1997-04-30T00:00:00 * Location: Cariaco Basin * Device: Trap, sediment (TRAPS) * Comment: Mark-VII automated sediment trap
CARIACO_Trap_1997_1 * Latitude: 10.500000 * Longitude: -64.670000 * Date/Time Start: 1997-05-01T00:00:00 * Date/Time End: 1997-10-31T00:00:00 * Location: Cariaco Basin * Device: Trap, sediment (TRAPS) * Comment: Mark-VII automated sediment trap
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1Event labelEvent
2DATE/TIMEDate/TimeGeocode
3Date/time endDate/time end
4Duration, number of daysDurationdays
5DEPTH, waterDepth watermGeocode
6Sample code/labelSample labelThunell, Robert C
7Flux of total massFlux totmg/m2/dayThunell, Robert Coriginal unit g/m**2/d**1
8Carbon, organic, particulate flux per dayPOC fluxmg/m2/dayThunell, Robert Coriginal unit g/m**2/d**1
9Nitrogen, organic, particulate flux per dayPON fluxmg/m2/dayThunell, Robert Coriginal unit g/m**2/d**1
10Silica, particulate flux per dayPSiO2 fluxmg/m2/dayThunell, Robert Coriginal unit g/m**2/d**1
11Calcium carbonate fluxCaCO3 fluxmg/m2/dayThunell, Robert Coriginal unit g/m**2/d**1
12Lithogenic flux per dayLitho fluxmg/m2/dayThunell, Robert Coriginal unit g/m**2/d**1
Size:
12324 data points

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