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    Wyświetlanie 1-4 z 4
    Tytuł:
    Ocena przydatności butelek z PET do przechowywania próbek wód podziemnych przeznaczonych do analizy stężenia trytu
    Suitability of PET bottles for the storage of groundwater samples in the analysis of tritium concentration
    Autorzy:
    Wilamowski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/20223765.pdf
    Data publikacji:
    2023
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    wody naturalne
    zawartość trytu
    butelki PET
    parowanie wody
    przechowywanie próbek wody
    natural waters
    tritium content
    PET bottles
    water evaporation
    water sample storage
    Opis:
    1.5-litre PET bottles were filled with a sample of groundwater, weighted and then stored in laboratory. Approximately every 11 weeks the bottles were weighted and one of them was taken for analyses. About 2.3% of water was lost from the bottles per year. The summer evaporation accounted for 55% of the winter evaporation value, which is mainly due to the difference in air humidity. The temperature effect was negligibly low. The electrical conductivity (PEW) increased linearly by 3 units (μS/cm) per loss of 1% of water. However, contrary to the electrical conductivity, the concentrations of tritium did not show any sensitivity to the degree of evaporation of the water sample, which justifies the conclusion that this type of bottles is suitable for storage of natural water samples intended for the analysis of tritium for up to 3 years under laboratory conditions.
    Źródło:
    Przegląd Geologiczny; 2023, 71, 2; 92-97
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Jurassic–Cretaceous transition in the High-Tatric succession (Giewont Unit, Western Tatra Mts, Poland): integrated stratigraphy and microfacies
    Autorzy:
    Lodowski, Damian Gerard
    Pszczółkowski, Andrzej
    Wilamowski, Andrzej
    Grabowski, Jacek
    Powiązania:
    https://bibliotekanauki.pl/articles/2023960.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    microfossils
    rock magnetism
    carbon isotopes
    Western Carpathians
    Tatra Mountains
    mikroskamieniałości
    skała magnetyczna
    izotopy węgla
    Karpaty Zachodnie
    Tatry
    Opis:
    Herein are presented the results of detailed bio - (calcareous dinocysts, calpionellids, foraminifers, saccocomids) and chemostratigraphic (δ13C) studies combined with high-resolution microfacies, rock magnetic and gamma-ray spectrometry (GRS) investigations performed on the upper Kimmeridgian-upper Valanginian carbonates of the Giewont succession (Tatricum, Giewont and Mały Giewont sections, Western Tatra Mountains, Poland). The interval studied covers the contact between the Raptawicka Turnia Limestone (RTL) Fm. and the Wysoka Turnia Limestone (WTL) Fm. Their sedimentary sequence is composed of micrites, pseudonodular limestones, cyanoid packstones, lithoclastic packstone and encrinites. A precise correlation with the previously published Mały Giewont section is ensured by biostratigraphy, rock magnetic and GRS logs. The methodology adopted has enabled the recognition of two stratigraphic discontinuities, approximated here as corresponding to the latest Tithonian-early (late?) Berriasian and the early Valanginian. The hiatuses are evidenced by biostratigraphic data and the microfacies succession as well as by perturbations in isotopic compositions and rock magnetic logs; they are thought to result from a conjunction of tectonic activity and eustatic changes. A modified lithostratigraphic scheme for the Giewont and the Osobita High-Tatric successions is proposed. The top of the RTL Fm. falls in the upper Tithonian, where cyanoid packstones disappear. At the base of the WTL Fm. a new Giewont Member is defined as consisting of a basal lithoclastic packstone and following encrinites.
    Źródło:
    Acta Geologica Polonica; 2022, 72, 1; 107--135
    0001-5709
    Pojawia się w:
    Acta Geologica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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:
    Zmiany poziomu morza : przyczyny, skale czasowe i historia ich poznania
    Sea level changes : causes, time scales and the history of their recognition
    Autorzy:
    Boski, Tomasz
    Wilamowski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2076015.pdf
    Data publikacji:
    2020
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    zmiana poziomu morza
    zapis geologiczny
    zapis miernika pływów
    altimetria satelitarna
    wpływ antropogeniczny
    sea level change
    geological record
    tide gauge record
    satellite altimetry
    anthropogenic impact
    Opis:
    Sea level changes provoked by multiple forcings that act in a wide range of time scales attracted human interest for several millennia. However, the bases of modern understanding of this phenomenon and its quantitative expression were achieved during the last two centuries. At present, owing to a series of altimetric observations made by 4 satellite missions in the last 30years, the mean sea level (MSL) rise calculated for the whole Earth is estimated to be 3-3.5 mm per year, with at least half of this value being attributable to human-induced climate warming. About 125,000 years ago, during the last interglacial (Eemian) that was warmer than the current period, the MSL was about 5 m higher than today. Approximately 116,000 years ago, the sea level began to decline as a result of gradual cooling of the climate that led to glaciation, which in the Northern Hemisphere had a climax at 20-30 ka BP. The transition from the last glacial maximum to the current warm period, covering the last 20,000years, includes the transfer of about 35 106 km3 of water from melting ice caps of the Northern Hemisphere to the oceanic reservoir, causing an increase in sea level of about 130 m. The average rate of MSL rise was about 10 mm per year, although over the last seven millennia, the MSL rising rate dropped to about 1-1.5 mm per year. These changes are considered representative of the natural variability of the Earth's climate system over the past 2 million years.
    Źródło:
    Przegląd Geologiczny; 2020, 68, 11; 820--823
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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