Citation:

s41396-018-0263-1

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Abstract:

Pore water and turnover rates were determined for surface sediment cores obtained in 2009 and 2010. The pore water was extracted with Rhizons (Rhizon CSS: length 5 cm, pore diameter 0.15 µm; Rhizosphere Research Products, Wageningen, Netherlands) in 1 cm-resolution and immediately fixed in 5% zinc acetate (ZnAc) solution for sulfate, and sulfide analyses. The samples were diluted, filtered and the concentrations measured with non-suppressed anion exchange chromatography (Waters IC-Pak anion exchange column, waters 430 conductivity detector). The total sulfide concentrations (H2S + HS- + S**2-) were determined using the diamine complexation method (doi:10.4319/lo.1969.14.3.0454). Samples for dissolved inorganic carbon (DIC) and alkalinity measurements were preserved by adding 2 µl saturated mercury chloride (HgCl2) solution and stored headspace-free in gas-tight glass vials. DIC and alkalinity were measured using the flow injection method (detector VWR scientific model 1054) (doi:10.4319/lo.1992.37.5.1113). Dissolved sulfide was eliminated prior to the DIC measurement by adding 0.5 M molybdate solution (doi:10.4319/lo.1995.40.5.1011). Nutrient subsamples (10 - 15 ml) were stored at – 20 °C prior to concentration measurements with a Skalar Continuous-Flow Analyzer (doi:10.1002/9783527613984).

Project(s):

European Seafloor Observatory Network (ESONET)

Hotspot Ecosystem Research and Mans Impact On European Seas (HERMIONE)

Funding:

Seventh Framework Programme (FP7), grant/award no. 226354 : Hotspot Ecosystem Research and Mans Impact On European Seas

Sixth Framework Programme (FP6), grant/award no. 36851 : European Seafloor Observatory Network

Coverage:

Latitude: 72.005000 * Longitude: 14.726402

Date/Time Start: 2009-07-23T18:22:43 * Date/Time End: 2009-07-23T18:22:43

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.110 m

Event(s):

PS74/169-1_PUC-15 * Latitude: 72.005000 * Longitude: 14.726402 * Date/Time: 2009-07-23T18:22:43 * Elevation: -1261.0 m * Location: Håkon Mosby Mud Volcano * Campaign: (PS74) * Basis: * Method/Device: Push corer (PUC)

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	DEPTH, sediment/rock	Depth sed	m			Geocode
2	Sulfide	S2-	µmol/l	Felden, Janine	Photometer, methylene blue (Cline 1969)
3	Sulfate	[SO4]2-	mmol/l	Felden, Janine	Ion chromatography
4	Carbon, inorganic, dissolved	DIC	mmol/l	Felden, Janine	Flow injection analysis (Hall and Aller 1992)	CO2 + HCO3- + CO32-
5	Alkalinity, total	AT	mmol(eq)/l	Felden, Janine	Two-point titration (Edmond 1970)
6	Silicate	Si(OH)4	µmol/l	Felden, Janine	Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim)
7	Phosphate	[PO4]3-	µmol/l	Felden, Janine	Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim)
8	Ammonium	[NH4]+	µmol/l	Felden, Janine	Seawater analysis after Grasshoff et al., 1983 (Verlag Chemie GmbH Weinheim)

License:

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

Size:

74 data points

Data

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

1 Depth sed [m]	2 S2- [µmol/l]	3 [SO4]2- [mmol/l]	4 DIC [mmol/l]	5 AT [mmol(eq)/l]	6 Si(OH)4 [µmol/l]	7 [PO4]3- [µmol/l]	8 [NH4]+ [µmol/l]
0.005	36	26.20	0.5	5.8	28	1	642
0.015	35	23.35	0.8	9.6	52	1	803
0.025	36	18.92	1.0	12.7	140	1	1722
0.035	36	13.80	1.4	14.9	202	1	2169
0.045	36	10.27	1.6	13.9	218	1	2447
0.055	39	6.94	1.7	16.0	363	3	3040
0.065	37	4.40	2.0	20.3	349	3	3186
0.075	39	3.00	2.0	20.3	330	4	3223
0.085	39	2.48	2.2	26.5	325	4	3144
0.095	37	1.99	2.2	28.3	321	3	3184
0.110	63	1.72	2.3	27.0