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: 72.005200 * Longitude: 14.726228

Date/Time Start: 2009-07-25T04:45:56 * Date/Time End: 2009-07-25T04:45:56

Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 0.115 m

Event(s):

PS74/172-1_PUC-136 * Latitude: 72.005200 * Longitude: 14.726228 * Date/Time: 2009-07-25T04:45:56 * Elevation: -1262.0 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:

83 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	50	22.13	0.9	9.4	95	17	398
0.015	141	13.22	1.4	19.6	225	57	804
0.025	146	4.61	2.3	23.8	295	70	1169
0.035	141	2.10	2.4	26.5	300	51	1277
0.045	909	1.94	2.4	27.9	301	37	1350
0.055		2.30	2.3	27.5	315	42	1542
0.065	1138	2.69	2.6	28.9	312	40	1566
0.075	191	2.87	2.3	26.6	319	31	1692
0.085	148	3.50	2.4	25.7	341	32	1791
0.095	148	4.32	2.5	25.7	384	28	1829
0.105	146	4.17	2.5	23.8	345	23	1681
0.115	143	2.99	2.6	26.1	417	19	2228