Barnes, David L (2022): Spatial and Temporal Groundwater Oxygen-18 and Deuterium Values Measured in a Discontinuous Permafrost Aquifer Located in Interior Alaska [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.943843
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Abstract:
Groundwater samples were collected from an extensive monitoring well network in a discontinuous permafrost aquifer. The sampled groundwater was analyzed for the stable isotopes oxygen-18 (18O) and deuterium (2H). Sampling was approximately aligned with season; spring (March 1 – April 2), summer (July 12 – Sept. 11), fall (Oct. 2 – Dec. 10), and winter (Jan. 9 – March 26). Wells were purged until geochemical parameters (water temperature, dissolved oxygen, conductivity, pH, and oxidation-reduction potential) stabilized or three well volumes of groundwater were pumped from the monitoring well. Samples were analyzed for 18O and 2H concentrations at the Alaska Stable Isotope Facility at the University of Alaska Fairbanks using continuous-flow isotope ratio mass spectrometry (CF-IRMS). δ2H and δ18O values were measured using pyrolysis-EA-IRMS. This method utilizes a ThermoScientific high temperature elemental analyzer (TC/EA) and Conflo IV interface with a DeltaVPlus mass spectrometer. Stable isotope ratios are reported in ‰ notation as parts per thousand (‰) deviation from the international standards, V-SMOW (Vienna Standard Mean Ocean Water). Instrument precision is <3.0 ‰ for hydrogen and < 0.5 ‰ for oxygen. The aquifer is located in the flood plain of the Tanana River in interior Alaska near the city of North Pole, Alaska. Stable isotope results were used to evaluate the movement of groundwater in the discontinuous permafrost aquifer and isolate areas where suprapermafrost groundwater mixes with subpermafrost groundwater through open taliks in the permafrost.
Related to:
Barnes, David L (in review): Evaluation of Groundwater Movement in Discontinuous Permafrost Regions by Stable Isotopes. Water Resources Research, 14, https://doi.org/10.1002/essoar.10510945.1
Coverage:
Median Latitude: 64.759323 * Median Longitude: -147.378860 * South-bound Latitude: 64.723619 * West-bound Longitude: -147.527041 * North-bound Latitude: 64.837779 * East-bound Longitude: -147.343898
Date/Time Start: 2013-03-01T00:00:00 * Date/Time End: 2014-03-26T00:00:00
Event(s):
MW-133 * Latitude: 64.738500 * Longitude: -147.345541 * Date/Time Start: 2013-07-21T00:00:00 * Date/Time End: 2013-11-07T00:00:00 * Location: Alaska * Method/Device: pumping
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Barnes, David L | |||
| 2 | Project | Project | Barnes, David L | |||
| 3 | Latitude of event | Latitude | Barnes, David L | |||
| 4 | Longitude of event | Longitude | Barnes, David L | |||
| 5 | Depth, well | Depth | ft | Barnes, David L | ||
| 6 | Depth, well | Depth well | m | Barnes, David L | ||
| 7 | Season | Season | Barnes, David L | |||
| 8 | DATE/TIME | Date/Time | Barnes, David L | Geocode | ||
| 9 | δ Deuterium, water | δD H2O | ‰ SMOW | Barnes, David L | ThermoScientific high temperature elemental analyzer (TC/EA) and Conflo IV interface with a DeltaVPlus mass spectrometer | VSMOW () |
| 10 | δ Deuterium, water, standard deviation | δD H2O std dev | ± | Barnes, David L | ||
| 11 | δ18O, water | δ18O H2O | ‰ SMOW | Barnes, David L | ThermoScientific high temperature elemental analyzer (TC/EA) and Conflo IV interface with a DeltaVPlus mass spectrometer | VSMOW () |
| 12 | δ18O, water, standard deviation | δ18O H2O std dev | ± | Barnes, David L |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2616 data points
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