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PANGAEA.
Data Publisher for Earth & Environmental Science
Coverage:
Latitude: 48.856998 * Longitude: -16.497999
Date/Time Start: 1998-08-30T19:04:00 * Date/Time End: 1998-08-30T22:47:00
Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 0.170 m
Event(s):
DI236_11-1 * Latitude Start: 48.856998 * Longitude Start: -16.497999 * Latitude End: 48.856998 * Longitude End: -16.497999 * Date/Time Start: 1998-08-30T19:04:00 * Date/Time End: 1998-08-30T22:47:00 * Elevation: -4800.0 m * Campaign: D236 * Basis: Discovery (1962) * Device: MultiCorer, small (MCS) * Comment: First deployment of GEOMAR small multicorer with 4 tubes.
Comment:
Total carbonate (Ct) concentrations were determined on-board ship during Discovery 222 (leg A) nd 226 cruises, using colourmetric methods (Johnsson et al., 1987) with a precision of 0.2% RSD (n=10) using a sample loop of 4ml. During Discovery 231, 236 and Meteor 42/2 cruises a newly developed system (based on infrared detection of (CO2) were used for determination of total carbonate (Goyet and Snover, 1993; OSullivan and Millero, 1998). The precision of this method was also 0.2% RSD (n=10) using a sample loop of 4ml. Samples were filtrated through disposable sterile cellulose acetate filters (0.45µm) and stored refrigerated in polyethylene vials (rinsed in MQ-water) until analysis on-board.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethodComment
1DEPTH, sediment/rockDepthmGeocode
2Depth, top/minDepth topmHall, Per
3Depth, bottom/maxDepth botmHall, Per
4Alkalinity, totalATmmol(eq)/lHall, PerHigh-precision potentiometric titration (Haraldsson et al., 1997)
5Carbonate ion[CO3]2-µmol/lHall, PerInfrared detection of CO2 (Goyet & Snover, 1993)
6Nitrate[NO3]-µmol/lHall, PerNutrients, CHEMLAB autoanalyser
7Ammonium[NH4]+µmol/lHall, PerNutrients, CHEMLAB autoanalyser
Size:
94 data points

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