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Wyszukujesz frazę "shallow groundwater circulation" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Warunki rozwoju i rozmieszczenie torfowisk w Kotlinie Orawsko-Nowotarskiej
Development conditions and distribution of peat bogs in the Orava-Nowy Targ Basin
Autorzy:
Łajczak, A.
Powiązania:
https://bibliotekanauki.pl/articles/2074702.pdf
Data publikacji:
2009
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
Kotlina Orawsko-Nowotarska
Karpaty Zachodnie
torfowiska niskie
torfowiska wysokie
wypływy wód gruntowych
Orava-Nowy Targ Basin
Western Carpathians
low peat bogs
raised peat bogs
shallow groundwater circulation
Opis:
The Orava-Nowy Targ Basin is the only intramontane basin in the Carpathian Mountains, where numerous low and raised peat bogs developed in the Holocene. The peat bogs were originally comprising about 40% of the basin area. to became confined to 12%, in result of several centuries of exploitation of peat. On the basis of investigations on geomorphological location of the preserved relics of peat bogs, and reconstructions of their original extent, an attempt was made to identify natural environment factors which had the biggest influence on development of peat-forming process within the Orava-Nowy Targ Basin. The most important of these factors were found to be landforms of fluvioglacial and fluvial accumulation and their composition, as well climatic conditions. However, it should be stated that distribution of raised peat bogs appears to be mainly controlled by the mode of circulation of shallow groundwaters and location of their stable outflows. This is an aspect of development of peat bogs that has not been studied up to now.
Źródło:
Przegląd Geologiczny; 2009, 57, 8; 694-694
0033-2151
Pojawia się w:
Przegląd Geologiczny
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The influence of tectonic setting on groundwater chemical composition in the Peshkopi gypsum karst area, Korab Mountains, Eastern Albania
Autorzy:
Eftimi, Romeo
Andreychouk, Viacheslav
Niedoba, Tomasz
Różkowski, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/31342964.pdf
Data publikacji:
2023
Wydawca:
Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
Tematy:
gypsum karst
groundwater shallow
deep circulation systems
water chemical composition
thermal springs
Albania
Opis:
The diversity of groundwater chemistry in the Peshkopi gypsum karst area may be related to its setting within the tectonically active Korab Massif (Albania), as shown by field tests of temperature, pH, Eh and EC, and sampling of the waters for chemical analysis (both major and trace components) from cool brackish springs and mineralized thermal springs. The relationship between the chemical composition of the spring waters and of the reservoir rocks was elucidated by analysis of anhydrite-gypsum rocks and experimental dissolution of an anhydrite-gypsum sample. Statistical analysis was used in the processing of hydrochemical data. Comparison of analytical results from 2019 with earlier data indicates compositional stability of the groundwaters over time. Our results together with statistical analysis of the hydrochemical data support an earlier hypothesis of two systems of groundwater circulation within the anhydrite-gypsum deposits of the Peshkopi region. A shallow circulation system involves cold (10-14°C), mainly brackish SO4-Ca waters with very low concentrations of Na+ and Cl- ions, reflecting their formation in a sulphate rock environment that probably corresponds spatially with a gypsum layer formed by hydration of anhydrite in the near-surface zone. A deep circulation system conditioned, inter alia, by the presence of a large fault, brings to the surface water at up to 44°C, saturated with H2S, mineralized, of the SO4-Ca type with an increased content of Na, K, HCO3, Cl, BO3 and SiO2>/sub>. The chemical composition of these waters, regardless of the presence of large amounts of sulphates, is significantly different and suggests the influence of other factors on their formation, such as slow circulation, contact with flysch rocks in the fault zone and the mixing of deep and near-surface waters in the final part of their ascent to the surface.
Źródło:
Geological Quarterly; 2023, 67, 2; art. no. 19
1641-7291
Pojawia się w:
Geological Quarterly
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Groundwater flow due to a nonlinear wave set-up on a permeable beach
Autorzy:
Przyborska, A.
Powiązania:
https://bibliotekanauki.pl/articles/47606.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Instytut Oceanologii PAN
Tematy:
pore pressure
groundwater circulation
nonlinear wave
water flow
beach sand
shallow water
wave dynamics
coastal zone
Źródło:
Oceanologia; 2014, 56, 3
0078-3234
Pojawia się w:
Oceanologia
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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