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Veldhuis, Marcel J W; Fransz, H George; de Bruin, Taco F (1996): Hydrochemistry measured on water bottle samples during TYDEMAN cruise DCM. PANGAEA,, In: Veldhuis, MJW et al. (1996): Oceanography during TYDEMAN cruise DCM (DeepChlorMax) to the Equatorial Atlantic. PANGAEA,

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Median Latitude: 22.278715 * Median Longitude: -37.886248 * South-bound Latitude: 7.418333 * West-bound Longitude: -53.893333 * North-bound Latitude: 33.973333 * East-bound Longitude: -21.650000
Date/Time Start: 1996-07-26T09:18:00 * Date/Time End: 1996-08-28T06:11:00
Minimum DEPTH, water: 3.97 m * Maximum DEPTH, water: 4927.99 m
DCM100-11 * Latitude: 10.970000 * Longitude: -49.818333 * Date/Time: 1996-07-29T10:30:00 * Campaign: DCM (DeepChlorMax) * Basis: Tydeman * Method/Device: CTD/Rosette (CTD-RO)
DCM100-13 * Latitude: 10.981667 * Longitude: -49.808333 * Date/Time: 1996-07-29T12:01:00 * Campaign: DCM (DeepChlorMax) * Basis: Tydeman * Method/Device: CTD/Rosette (CTD-RO)
DCM100-15 * Latitude: 10.970000 * Longitude: -49.826667 * Date/Time: 1996-07-29T13:31:00 * Campaign: DCM (DeepChlorMax) * Basis: Tydeman * Method/Device: CTD/Rosette (CTD-RO)
Marine sediments for determination of organic carbon and nitrogen was collected using paired funnel-shaped traps (0.0314 m**2 opening) suspending on buoys at two depths. One set of traps was deployed at 300 m, the other ones just below the chlorophyll maximum. After 24 hours traps were recovered and the marine sediment filtered on pre-combusted GF/C filters and stored at -20°C. Organic carbon was determined after removing carbonate carbon by acidification with sulfurous acid.
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEvent
2Date/Time of eventDate/Time
3Latitude of eventLatitude
4Longitude of eventLongitude
5DEPTH, waterDepth watermGeocode
6Pressure, waterPressdbarVeldhuis, Marcel J W
7Temperature, waterTemp°CVeldhuis, Marcel J WCTD
8SalinitySalVeldhuis, Marcel J WCTD
9Temperature, water, potentialTpot°CVeldhuis, Marcel J WCalculated
10Density, sigma-theta (0)Sigma-thetakg/m3Veldhuis, Marcel J WCalculated
11Density, mass densityDensitykg/m3Veldhuis, Marcel J WCalculated
12OxygenO2µmol/lVeldhuis, Marcel J WCTD with attached oxygen sensor
13SilicateSi(OH)4µmol/lBakker, KarelSeawater analysis (Strickland & Parsons, 1972)
14Phosphate[PO4]3-µmol/lBakker, KarelDetermination of phosphate (Murphy & Riley, 1962)
15Nitrate[NO3]-µmol/lBakker, KarelSeawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim)
16Nitrite[NO2]-µmol/lBakker, KarelSeawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim)
17Ammonium[NH4]+µmol/lBakker, Karelafter Helder & Vries, 1979
18Radiation, photosynthetically activePARµmol/m2/sHiehle, M A
19Carbon, organic, dissolvedDOCµmol/lGonzalez, Santiago
20Carbon, organic, particulatePOCµg/lVeldhuis, Marcel J W
21Chlorophyll aChl aµg/lVeldhuis, Marcel J W
22FluorescenceFluorescencearbitrary unitsVeldhuis, Marcel J WFluorometer, Chelsea Instruments
23Bottle numberBottle
49039 data points

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