Citation:

PANGAEA.974421

Name: Biogeochemical dataset from 6 gravity cores taken as part of the PROSPECTOMICS project
Published: 2025-01-13
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Barents Sea; cell counts; dissolved gases; hydrocarbon seepage; pore water

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Published: 2025-01-13 • DOI registered: 2025-02-11

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Abstract:

The cruise no. 248 (GS23) of Research Vessel G.O. Sars took place from June 7th to 18th, 2023, covering a transect from Tromsø to Svalbard. During the expedition, we collected a total of 6 gravity cores from the southern Barents Sea at ca. 300 m water depth from three sampling areas, corresponding either to known thermogenic and biogenic gas anomalies (i.e. site 1, site 2) or to pristine seabed as reference (i.e. site 3). Gravity cores were subsampled on board and further conditioned for downstream analyses, namely: pore water geochemistry (ion chromatography, alkalinity titration and spectrophotometry), dissolved gas concentrations (gas chromatography), total cell counts (fluorescence microscopy). Here, we provide the corresponding results covering pore water geochemistry, dissolved gas concentrations, and total cell counts.

Keyword(s):

Barents Sea; cell counts; dissolved gases; hydrocarbon seepage; pore water

Related to:

Schnabel, Ellen; et al. (in prep.): Coupled 15N-labeled nitrate turnover and metagenomics reveal metabolic versatility in substrate use by benthic microbial populations of the Barents Sea.

Funding:

Horizon 2020 (H2020), grant/award no. 899667 : Using Omics Techniques for Hydrocarbon Prospecting (PROSPECTOMICS)

Coverage:

Median Latitude: 70.759037 * Median Longitude: 18.167122 * South-bound Latitude: 70.673683 * West-bound Longitude: 17.430283 * North-bound Latitude: 70.930700 * East-bound Longitude: 18.438183

Date/Time Start: 2023-06-07T10:56:00 * Date/Time End: 2023-06-07T15:34:00

Minimum Elevation: -307.0 m * Maximum Elevation: -232.0 m

Event(s):

GS23/248_GC04 (GC04) * Latitude: 70.673683 * Longitude: 18.438183 * Date/Time: 2023-06-07T10:56:00 * Elevation: -307.0 m * Campaign: * Basis: * Method/Device: Gravity corer (GC) * Comment: Site 1; thermogenic gas seepage

GS23/248_GC05 (GC05) * Latitude: 70.673683 * Longitude: 18.438183 * Date/Time: 2023-06-07T12:05:00 * Elevation: -307.0 m * Campaign: * Basis: * Method/Device: Gravity corer (GC) * Comment: Site 1; thermogenic gas seepage

GS23/248_GC06 (GC06) * Latitude: 70.797533 * Longitude: 18.313233 * Date/Time: 2023-06-07T13:25:00 * Elevation: -234.0 m * Campaign: * Basis: * Method/Device: Gravity corer (GC) * Comment: Site 2; biogenic gas seepage

Comment:

# stands for nd

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Event label	Event		Schnabel, Ellen
2	Sample ID	Sample ID		Schnabel, Ellen
3	LATITUDE	Latitude		Schnabel, Ellen		Geocode
4	LONGITUDE	Longitude		Schnabel, Ellen		Geocode
5	Site	Site		Schnabel, Ellen
6	DATE/TIME	Date/Time		Schnabel, Ellen		Geocode – sampling
7	Type	Type		Schnabel, Ellen		of location
8	Method comment	Method comm		Schnabel, Ellen
9	ELEVATION	Elevation	m a.s.l.	Schnabel, Ellen		Geocode
10	DEPTH, sediment/rock	Depth sed	m	Schnabel, Ellen		Geocode
11	Ammonium	[NH4]+	µmol/l	Schnabel, Ellen
12	Nitrate	[NO3]-	µmol/l	Schnabel, Ellen
13	Nitrite	[NO2]-	µmol/l	Schnabel, Ellen
14	Phosphate	[PO4]3-	µmol/l	Schnabel, Ellen
15	Sulfate	[SO4]2-	mmol/l	Schnabel, Ellen
16	Bromide	Br-	mmol/l	Schnabel, Ellen
17	Chloride	Cl-	mmol/l	Schnabel, Ellen
18	Hydrogen sulfide	H2S	µmol/l	Schnabel, Ellen
19	Calcium ion	Ca2+	mmol/l	Schnabel, Ellen
20	Magnesium ion	Mg2+	mmol/l	Schnabel, Ellen
21	Potassium ion	K+	mmol/l	Schnabel, Ellen
22	Alkalinity, total	AT	mmol(eq)/l	Schnabel, Ellen
23	Methane	CH4	µmol/l	Schnabel, Ellen	Gas chromatography
24	Carbon dioxide	CO2	µmol/l	Schnabel, Ellen	Gas chromatography
25	Cell counts, microbial	Cell counts microb	log #/cm³	Schnabel, Ellen	Fluorescence optical microscopy

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

1177 data points

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Datasets with similar metadata

Schnabel, E; Vuillemin, A; Laczny, CC et al. (2025): Pore water solutes, total cell counts, dissolved gases and sulfate reduction rates of the 50 gravity cores of the PROSPECTOMICS project. https://doi.org/10.1594/PANGAEA.974341
Schnabel, E; Vuillemin, A; Laczny, CC et al. (2025): XRF measurements of major oxides and trace elements on bulk sediment of the 50 gravity cores of the PROSPECTOMICS project. https://doi.org/10.1594/PANGAEA.974346
Ruben, MJ; Hefter, J; Schubotz, F et al. (2022): Biogeochemical data of sediment cores taken from Hornsund Fjord, Svalbard, in 2014-2020. https://doi.org/10.1594/PANGAEA.946019