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Wyświetlanie 1-2 z 2
Tytuł:
The δ18O and δD isoscapes of recent groundwater in Poland
Autorzy:
Leśniak, Paweł M.
Wilamowski, Andrzej
Powiązania:
https://bibliotekanauki.pl/articles/94529.pdf
Data publikacji:
2019
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
stable isotopes of water
groundwater
tritium
precipitation
isoscapes
izotopy stabilne wody
wody podziemne
tryt
opady atmosferyczne
Opis:
Considering the country’s development and quality of life, recognition of the water cycle mechanism is of great importance. A significant contribution to this comes from the isotopic composition of particular elements of the water cycle. However, a weak point is that in Poland only one element of the water cycle, precipitation, is sampled and measured over more than 312 thousands km2 at a single station. It is therefore necessary to seek extension of or alternatives for these rare data. Such an alternative is the sampling of groundwater containing tritium in the national monitoring net-work of groundwater bodies that is maintained by the Polish Geological Institute. Based on such data we have con-structed δ18O and δD isoscapes (i.e., maps of δ18O and δD values) of recent groundwater. These data provide spatial distribution of δ18O and δD values which can be used as input to hydrogeological models.
Źródło:
Geologos; 2019, 25, 3; 205-211
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Isotope characterisation of deep aquifers in the Gwda catchment, northern Poland
Autorzy:
Kotowski, T.
Satora, S.
Powiązania:
https://bibliotekanauki.pl/articles/94215.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet im. Adama Mickiewicza w Poznaniu
Tematy:
Cenozoic aquifers
groundwater dating
stable isotopes
radiocarbon
kenozoik
poziomy wodonośne
datowanie wód podziemnych
stabilne izotopy
radiowęgiel
Opis:
We present the results of isotope measurements (δ18O, δ D, δ13CDIC and 14C) and chemical analyses (TDS, TOC, HCO3–, SO42–, Cl–, NO3–, NH4+, Ca2+, Mg2+ Na+ and K+) conducted on groundwater samples collected from deep Cenozoic aquifers. These aquifers are the basic source of drinking water at numerous localities within the study area in northern Poland. Most of the δ18O determinations are characterised by low variability (i.e., > 70 per cent of δ18O are between –9.5‰ and –9.2‰). In most cases tritium activity was not detected or its content slightly exceeded the uncertainty of measurement (from ±0.3 T.U. to ± 0.5 T.U.). On average, 14C activity is twice higher than that under similar conditions and in hydrogeological systems. The δ13CDIC values fall within the –13.6‰ to –12.8‰ range. A slight variability is observed when considering all isotope and chemical data within the study area and under these hydrogeological conditions. In general, the results of isotope and chemical analyses seem to be homogeneous, indicating the presence of closely similar groundwaters in the system, irrespective of geological formation. It is likely that there is a significant hydraulic connection between shallow and deep aquifers in the Gwda catchment, which indicates the potential for seepage of pollutants from shallow Pleistocene to deep Miocene aquifers. This can endanger the latter by e.g., high concentrations of NO3–, SO42– and Cl– ions from shallow aquifers within the Gwda catchment.
Źródło:
Geologos; 2016, 22, 2; 137-147
1426-8981
2080-6574
Pojawia się w:
Geologos
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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