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: 48.744999 * Longitude: -16.535999

Date/Time Start: 1998-03-25T16:23:00 * Date/Time End: 1998-03-25T16:23:00

Minimum DEPTH, sediment/rock: 0.000 m * Maximum DEPTH, sediment/rock: 0.230 m

Event(s):

13370-004 * Latitude Start: 48.744999 * Longitude Start: -16.535999 * Latitude End: 48.744999 * Longitude End: -16.535999 * Date/Time Start: 1998-03-25T16:23:00 * Date/Time End: 1998-03-25T16:23:00 * Elevation: -4839.0 m * Campaign: * Basis: Discovery (1962) * Method/Device: MultiCorer Barnett pattern (12-57) (MCB57) * Comment: 12 good cores, lander site.

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	Phosphate	[PO4]3-	µmol/l	Hall, Per	Nutrients, CHEMLAB autoanalyser
8	Ammonium	[NH4]+	µmol/l	Hall, Per	Nutrients, CHEMLAB autoanalyser

License:

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

Size:

137 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 [PO4]3- [µmol/l]	8 [NH4]+ [µmol/l]
0.000			2.394	2243.90	21.80	1.40	0.300
0.002	0.000	0.005	2.174	2045.70	32.00	1.30	3.400
0.008	0.005	0.010	2.157	2033.00	38.30	1.30	3.700
0.012	0.010	0.015	2.042	1997.00	39.30	1.30	2.600
0.018	0.015	0.020	2.121	2044.50	40.40	1.40	2.000
0.025	0.020	0.030	2.276	2125.20	41.10	1.60	1.100
0.035	0.030	0.040	2.307	2211.50	40.90	1.80	0.700
0.045	0.040	0.050	2.286	2221.80	40.80	1.90	0.600
0.055	0.050	0.060	2.326	2303.50	40.50	2.20	0.400
0.065	0.060	0.070	2.315	2378.30	42.00	2.30	0.500
0.075	0.070	0.080	2.340	2416.80	40.10	2.30	0.600
0.085	0.080	0.090	2.295	2356.30	38.50	2.40	0.300
0.095	0.090	0.100	2.350	2372.30	36.80	2.50	0.400
0.110	0.100	0.120	2.411	2402.30	38.20	2.50
0.130	0.120	0.140	2.449	2482.30	35.90	2.80	1.300
0.150	0.140	0.160	2.412	2423.20	34.80	3.00	1.200
0.170	0.160	0.180	2.538	2395.80	33.60	3.00	1.000
0.190	0.180	0.200	2.550	2451.20	31.20	3.40	0.400
0.210	0.200	0.220	2.654	2452.00	31.10	3.50	0.500
0.230	0.220	0.240	2.652	2549.30	29.40	3.70	0.600