Žagar, Klara; Žitnik, Marjetka; Žigon, Stojan; Bračič Železnik, Branka; Jamnik, Brigita; Pavlič, Urška; Vreča, Polona (2022): Isotopic characterisation of the Sava and Iška River at Ljubljansko polje and Ljubljansko barje, Slovenia, during 2020-2021 sampling campaign [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.950674
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Abstract:
The isotopic data was obtained to provide information on the temporal and spatial variability of surface water and groundwater in the Ljubljana basin. This dataset includes monthly hydrogen (δ²H) and oxygen (δ¹⁸O) sampling data for surface water from the Sava and Iška rivers. Sampling was performed between January 2020 to December 2021 using a polypropylene Burkle TM angular beaker attached to a BurkleTM telescopic rod (Bürkle GmbH, Bad Bellingen, DE). The Sava River sampling was performed at Sava Brod and Sava Šentjakob, while the Iška River samples were collected at Iška vas. Besides isotope data, physico-chemical parameters (water temperature and electrical conductivity) were measured on-site at each location using a calibrated UltrameterTM II 6PFCE (MYRON L Company, Carlsbad, CA, USA), with an accuracy of ±0.15 °C, ±1 μS/cm and ±0.02, respectively. In addition, water discharge and temperature data were obtained from the Slovenian Environment Agency (https://www.arso.gov.si/vode/podatki/amp/H3570_t_30.html, website accessed in 11/2022). Altogether, 56 samples of surface water were collected. All water samples were collected in 60 ml HDPE bottles and stored at 5 °C until analysis. The isotope ratios of samples were performed at the Jožef Stefan Institute using a dual inlet isotope ratio mass spectrometer (DI IRMS, Finnigan MAT DELTA plus Finnigan MAT GmbH, Bremen, Germany) with an automated H₂-H₂O and CO₂-H₂O equilibrator HDOeq48 Equilibration Unit (custom built by M. Jaklitsch). The average sample repeatability was 0.3 ‰ for δ²H and 0.02 ‰ for δ¹⁸O. Deuterium excess (d−excess) was calculated as d−excess [‰] = δ²H − 8 x δ¹⁸O (Dansgaard, 1964). The obtained isotopic data provide information on the temporal and spatial variability of surface water in the Ljubljana basin. The related groundwater data is also archived at PANGAEA (Žagar et. al. 2022).
Keyword(s):
Supplement to:
Žagar, Klara; Ortega, Lucia; Pavlič, Urška; Jamnik, Brigita; Bračič Železnik, Branka; Vreča, Polona (2024): Unravelling the sources contributing to the urban water supply: An isotope perspective from Ljubljana, Slovenia. Journal of Hydrology, 632, 130892, https://doi.org/10.1016/j.jhydrol.2024.130892
Related to:
Hydrological data, Šentjakob - Sava, table for 30 days [dataset]. Slovenian Environment Agency, https://www.arso.gov.si/vode/podatki/amp/H3570_t_30.html (website, accessed in 11/2022)
Dansgaard, W (1964): Stable isotopes in precipitation. Tellus, 16(4), 436-468, https://doi.org/10.3402/tellusa.v16i4.8993
Žagar, Klara; Žitnik, Marjetka; Žigon, Stojan; Bračič Železnik, Branka; Jamnik, Brigita; Pavlič, Urška; Vreča, Polona (2022): Isotopic characterisation of groundwater at Ljubljansko polje and Ljubljansko barje, Slovenia, during 2020-2021 sampling campaign [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.950670
Funding:
International Atomic Energy Agency (IAEA), grant/award no. F33024: Isotope Techniques for the Evaluation of Water Sources for Domestic Supply in Urban Areas
Slovenian Research Agency, grant/award no. P1-0143: Cycling of substances in the environment, mass balances, modelling of environmental processes and risk assessment
Coverage:
Median Latitude: 46.071099 * Median Longitude: 14.525666 * South-bound Latitude: 45.936196 * West-bound Longitude: 14.474743 * North-bound Latitude: 46.116151 * East-bound Longitude: 14.586218
Date/Time Start: 2020-01-27T12:17:00 * Date/Time End: 2021-12-22T07:00:00
Minimum ELEVATION: 273.4 m a.s.l. * Maximum ELEVATION: 326.3 m a.s.l.
Event(s):
Ljubljana_water-sampling_2020-2021 * Latitude Start: 46.085965 * Longitude Start: 14.494968 * Latitude End: 45.936196 * Longitude End: 14.514667 * Date/Time Start: 2020-01-27T09:28:00 * Date/Time End: 2021-12-22T07:00:00 * Elevation Start: 307.1 m * Elevation End: 326.3 m * Method/Device: Water sample (WS)
Parameter(s):
# | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
---|---|---|---|---|---|---|
1 | Sample ID | Sample ID | Žagar, Klara | |||
2 | Country | Country | Žagar, Klara | |||
3 | Location | Location | Žagar, Klara | |||
4 | Site | Site | Žagar, Klara | |||
5 | Sample type | Samp type | Žagar, Klara | |||
6 | Code | Code | Žagar, Klara | Sample type | ||
7 | DATE/TIME | Date/Time | Žagar, Klara | Geocode – UTC | ||
8 | Date/Time local | Date/Time local | Žagar, Klara | |||
9 | LATITUDE | Latitude | Žagar, Klara | Geocode | ||
10 | LONGITUDE | Longitude | Žagar, Klara | Geocode | ||
11 | ELEVATION | Elevation | m a.s.l. | Žagar, Klara | Geocode | |
12 | Temperature, water | Temp | °C | Žagar, Klara | Ultrameter™ II 6PFCE, MYRON L Company, Carlsbad, CA, USA | In-situ measurement by Jožef Stefan Institute |
13 | Conductivity, electrical | Cond electr | µS/cm | Žagar, Klara | Ultrameter™ II 6PFCE, MYRON L Company, Carlsbad, CA, USA | In-situ measurement by Jožef Stefan Institute |
14 | River discharge | Q | m3/s | Žagar, Klara | Reading from 10 minutes measurements by Slovenian Environment Agency (https://www.arso.gov.si/vode/podatki/amp/H3570_t_30.html) | |
15 | Temperature, water | Temp | °C | Žagar, Klara | Reading from 10 minutes measurements by Slovenian Environment Agency (https://www.arso.gov.si/vode/podatki/amp/H3570_t_30.html) | |
16 | δ18O, water | δ18O H2O | ‰ SMOW | Žagar, Klara | Dual inlet isotope ratio mass spectrometry | VSMOW, measurement performed at Jožef Stefan Institute |
17 | δ18O, water, standard deviation | δ18O H2O std dev | ± | Žagar, Klara | Dual inlet isotope ratio mass spectrometry | VSMOW |
18 | δ Deuterium, water | δD H2O | ‰ SMOW | Žagar, Klara | Dual inlet isotope ratio mass spectrometry | VSMOW, measurement performed at Jožef Stefan Institute |
19 | δ Deuterium, water, standard deviation | δD H2O std dev | ± | Žagar, Klara | Dual inlet isotope ratio mass spectrometry | VSMOW |
20 | Deuterium excess | d xs | ‰ | Žagar, Klara | Calculated |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Size:
850 data points