Date (Creation)

2020-01-03

Date (Revision)

2020-01-03

Date (Publication)

2020-01-03

Date (released)

2020-01-03

Edition

1.0

Unique resource identifier

https://doi.org/10.5285/3d82fd3f-884b-47b6-b11c-6c96d66b950d

Codespace

doi

Unique resource identifier

GB/NERC/BAS/PDC/01288

Codespace

https://data.bas.ac.uk/

Unique resource identifier

NE/M019829/1

Codespace

award

Other citation details

Please cite this item as: Hodson, A. (2020). Detailed water quality parameters, including methane concentrations and isotopic composition, for groundwater springs discharging from open system pingos in Adventdalen, Svalbard (2014-2017) (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/3d82fd3f-884b-47b6-b11c-6c96d66b950d

Credit

No credit.

Status

Completed

Point of contact

Organisation name	Individual name	Electronic mail address	Role
University Centre in Svalbard (UNIS)	Hodson, Andrew		Author
NERC EDS UK Polar Data Centre		PDCServiceDesk@bas.ac.uk	Point of contact

Maintenance and update frequency

As needed

Maintenance note

Completed

Global Change Master Directory (GCMD) Science Keywords

• EARTH SCIENCE > Cryosphere > Frozen Ground > Periglacial Processes
• EARTH SCIENCE > Cryosphere > Frozen Ground > Permafrost
• EARTH SCIENCE > Cryosphere > Snow/Ice > Permafrost
• EARTH SCIENCE > Hydrosphere > Ground Water > Groundwater Chemistry
• EARTH SCIENCE > Hydrosphere > Snow/Ice > Permafrost
• EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry

Theme

• Svalbard

• methane

• permafrost

• pingos

• water quality

Place

• Adventdalen, Svalbard Arctic

GEMET - INSPIRE themes, version 1.0

• Meteorological geographical features
• Hydrography

Access constraints

Other restrictions

Other constraints

no limitations to public access

Access constraints

Other restrictions

Other constraints

no limitations

Use constraints

License

Other constraints

Open Government Licence v3.0

Use constraints

Other restrictions

Other constraints

This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/

Use constraints

Other restrictions

Other constraints

This data is governed by the NERC data policy and supplied under Open Government Licence v.3

Use constraints

Other restrictions

Other constraints

No restrictions.

Unique resource identifier

url

Codespace

url

Association Type

Larger work citation

Unique resource identifier

url

Codespace

url

Association Type

Cross reference

Spatial representation type

Text, table

Language

English

Character set

UTF8

Topic category

• Environment

Begin date

2014-04-23

End date

2017-10-03

Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry

Date (Publication)

2008-11-12

Cited responsible party

Organisation name	Individual name	Electronic mail address	Role
European Petroleum Survey Group		EPSGadministrator@iogp.org	Publisher

Unique resource identifier

urn:ogc:def:crs:EPSG::3031

Version

6.18.3

Hierarchy level

Dataset

Statement

Methodology:

Samples for dissolved iron and manganese analysis were syringe-filtered immediately in the field through 0.45 µm filters into pre-cleaned 15 mL Eppendorf Tubes, before acidification to pH ~ 1.7 using reagent grade HNO3- (AnalaR 65% Normapur, VWR, IL, USA). The analysis of dissolved Fe and Mn was then completed using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) (PerkinElmer Elan DRC II, MA, USA). Precision errors of the analyses were < 5% according to repeat analyses of mid-range standards, with a detection limit of 1.0 ug L-1. No contaminants were detected above this limit in the analyses of blank deionised water samples. Samples for major ion analysis (here Ca2+, Mg2+, Na+, K+, Cl-, NO3-, SO42-) were also filtered in the same manner (but not acidified) and stored in 50 mL Corning centrifuge tubes after being triple rinsed with filtrate. The analysis was conducted on Dionex DX90 Ion Chromatographs with a detection limit of 0.02 mg L-1 for the lowest, undiluted analysis. Precision errors for these ions were all <5% for mid-range standards.

Charge balance calculations were used to provide the indicative values of HCO3-.

Samples for the determination of dissolved methane and carbon dioxide concentrations as well as delta13C-CH4 and delta13C-DIC of the waters were taken directly from the spring following immersion, complete filling and sealing of a 22 mL Wheaton bottle with a crimp-top lid with septum. The samples were stored inverted under water at 4 degC until analysis. The analysis of the CH4 was performed by gas-chromatography on a Shimadzu GC-2014 instrument equipped with a methaniser and flame ionisation detector, using a 30 m GS-Q, 0.53 mm internal diameter column with N2 as a carrier gas at a flow rate of 8 mL/minute, and injection, oven and detector temperature of 60, 40 and 240 degC, respectively. The sample size was 100 uL and the sample run time was 3 minutes at 40 degC. Concentrations of dissolved CH4 were obtained according to a mass balance calculation for the samples, in which a known volume of N2 was injected into sample vials to create a headspace. After shaking and equilibration (2 h) the CH4 partitioned into the headspace was analysed by GC-FID and the corresponding mass in the gas and aqueous phase was determined by Henry's law, to obtain a final concentration in the water sample. Calibration gas standards were prepared by serial dilution of certificated 60% CH4: 40% CO2 mixed gas using O2-free N2 as the balance gas. The method detection limit was 10 ppm for CH4 in the headspace sample and the analytical precision error was < 5%.

Analysis of dissolved methane isotopic composition and concentration was performed using the gas headspace equilibration technique (5mls sampled water were injected into a Viton-stoppered, He-flushed 120 mL glass serum vial). 10mls of the headspace was then flushed through a 2 mL sample loop, and injected onto a 25 m MolSieve column within an Agilent 7890B GC attached to an Isoprime100 Isotope Ratio Mass Spectrometer (IRMS). Analytical precision errors for samples > 3 ng-C were better than 0.3 per mille for isotopic values, and < 3.5% for concentration, based on methane standard injections. Delta13CDIC was measured by a Continuous Flow Isotopic Ratio Mass Spectrometer (Thermo-Finnegan Delta V with gasbench interface) and an error of 0.1 per mille. All delta13CDIC and delta13CCH4 values are reported vs. the Vienna Pee Dee Belemnite standard.

Samples for water isotope analysis were collected as unfiltered 20 mL aliquots in a screw-top HDPE bottle. The bottles were subsampled into 1.5 mL vials with septa closures and loaded into the auto-sampler tray of a CDRS instrument (Picarro V 1102-i model). Each sample was injected and measured 6 times using 2.5 uL of water for each injection. Together with the samples, two secondary international standards (USGS 64444 and USGS 67400)...(6)

Data quality:

See lineage for precision errors.

For missing analyses or lost/damaged samples, cells are marked "n.d." (not determined). Results below detection limit are marked "b.d." (below detection).

Metadata

File identifier

3d82fd3f-884b-47b6-b11c-6c96d66b950d XML

Metadata language

English

Character set

UTF8

Hierarchy level

Dataset

Hierarchy level name

dataset

Date stamp

2020-01-03

Metadata standard name

ISO 19115 Geographic Information - Metadata

Metadata standard version

ISO 19115:2003(E)

Metadata author

Organisation name	Individual name	Electronic mail address	Role
NERC EDS UK Polar Data Centre		polardatacentre@bas.ac.uk	Point of contact