Citation:

PANGAEA.859217

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Project(s):

Benthic Biology and Geochemistry of a North-eastern Atlantic Abyssal Locality (BENGAL)

Funding:

Fourth Framework Programme (FP4), grant/award no. MAS3950018 : Benthic Biology and Geochemistry of a North-eastern Atlantic Abyssal Locality

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: * Basis: Discovery (1962) * Method/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):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	Depth, top/min	Depth top	m	Hall, Per
3	Depth, bottom/max	Depth bot	m	Hall, Per
4	Alkalinity, total	AT	mmol(eq)/l	Hall, Per	High-precision potentiometric titration (Haraldsson et al., 1997)
5	Carbonate ion	[CO3]2-	µmol/l	Hall, Per	Infrared detection of CO2 (Goyet & Snover, 1993)
6	Nitrate	[NO3]-	µmol/l	Hall, Per	Nutrients, CHEMLAB autoanalyser
7	Ammonium	[NH4]+	µmol/l	Hall, Per	Nutrients, CHEMLAB autoanalyser

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

94 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Depth sed [m]	2 Depth top [m]	3 Depth bot [m]	4 AT [mmol(eq)/l]	5 [CO3]2- [µmol/l]	6 [NO3]- [µmol/l]	7 [NH4]+ [µmol/l]
0.000			2.377	2256.80	44.40	7.600
0.002	0.000	0.005	2.179	2114.80	78.60	15.000
0.008	0.005	0.010	2.166	2143.80	83.00	10.300
0.012	0.010	0.015	2.197	2181.70	84.40	10.000
0.018	0.015	0.020	2.150	2046.90	84.40	9.100
0.022	0.020	0.025	2.126	2022.10	86.10	9.100
0.028	0.025	0.030	2.267	2175.10	90.50	10.000
0.035	0.030	0.040	2.305	2246.70	87.40	9.400
0.045	0.040	0.050	2.294	2234.90	86.40	8.200
0.055	0.050	0.060	2.301	2237.50	86.40	7.600
0.070	0.060	0.080	2.346	2241.50	84.70	7.000
0.090	0.080	0.100	2.324	2262.50	82.40	7.000
0.110	0.100	0.120	2.350	2259.20	81.30	7.900
0.130	0.120	0.140	2.370	2264.70	82.70	8.800
0.150	0.140	0.160	2.364	2265.30	82.70	9.100
0.170	0.160	0.180	2.364	2278.40	83.00	8.800