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    Wyświetlanie 1-7 z 7
    Tytuł:
    Investigation of groundwater potential zone using Geospatial Technology in Bahir Dar Zuria District, Amhara, Ethiopia
    Autorzy:
    Yihunie, Dawit
    Halefom, Afera
    Powiązania:
    https://bibliotekanauki.pl/articles/1031666.pdf
    Data publikacji:
    2020
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Ethiopia
    GIS
    Groundwater potential
    geology
    geospatial technology
    Opis:
    Geospatial technology has been done to identify spatially the extents of highly suitable and moderately suitable areas for groundwater demarcation. Several input parameters (land use, soil type, slope, geology, geomorphology, and lineament) used to maps Groundwater potential assessment. Each thematic map has been reclassified into five classes. Suitable weightages have been given to each class with respect to its groundwater potential influences. Area of all raster formats of all parameters were calculated by GIS environment. All the weighted input parameters have been overlaid using “Weighted Overlay Analysis” tool in ArcGIS 10.3 platform. The results showed that 8.26 Km2, 441.74 Km2, 812.86 Km2, 198.01 Km2 and 80.57 Km2 of the study area fall in “Highly suitable, High, suitable, Medium suitable, Low suitable and Very Low suitable” category of groundwater potential respectively.
    Źródło:
    World Scientific News; 2020, 146; 274-289
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integration of Delphi Technique and Analytical Hierarchy Process Method in Assessment the Groundwater Potential Influence Criteria: A Case Study of the Ba River Basin
    Autorzy:
    Dang, Tuyet Minh
    Nguyen, Le Tung Duong
    Powiązania:
    https://bibliotekanauki.pl/articles/2020882.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Przeróbki Kopalin
    Tematy:
    Ba river basin
    AHP method
    Delphi technology
    groundwater
    groundwater potential
    basen rzeki Ba
    metoda AHP
    technologia Delphi
    wody podziemne
    Opis:
    Water is a boon for all living beings over the world and groundwater is considered one of the indispensable natural sources of potable water. It is necessary to assess and predict the groundwater potential to provide insights for decision-makers for proper planning and management of groundwater. The occurrence of groundwater depends on hydrological, ecological, climate, geological, and physiographical criteria. The purpose of the present study is to choose and attribute scores to all various factors that affected groundwater prospects in the Ba river basin. Firstly, the Delphi method was applied in the expert-based survey to choose six parameters that are considered as influencing factors, namely, lineament density, rainfall, slope, land cover, drainage density, and geology. Then, the weights for the various factors were generated using the Analytic Hierarchy Process (AHP) approach which allows the pairwise comparison of criteria influencing the potential areas. The consistency analyses show that the findings were consistent with a previous study. The consistency and sensitivity analyses showed that the obtained results were coherent, providing the weight vector of the achievable criteria that affect the groundwater prospect in the study area. The study reveals that lineament density and slope are criteria affecting the most prominent groundwater occurrence with 35.1% and 20.1%, respectively. However, the influence of other factors (rainfall, land cover, drainage density, and geology) is not visible. These criteria are assigned to the small weights and do not have a significant influence on the groundwater potential. The study results provide baseline information, which needs to be taken into account to control and manage groundwater potentiality.
    Źródło:
    Inżynieria Mineralna; 2021, 2; 91--102
    1640-4920
    Pojawia się w:
    Inżynieria Mineralna
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identification of potential groundwater recharge sites in a semi-arid region of Pakistan using Saaty’s Analytical Hierarchical Process (AHP)
    Autorzy:
    Suliman, Muhammad
    Samiullah, Khan
    Ali, Muhammad
    Powiązania:
    https://bibliotekanauki.pl/articles/2055773.pdf
    Data publikacji:
    2022
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    Saaty’s Analytical Hierarchical Process (AHP)
    weighted overlay analysis
    semi-arid region
    groundwater potential sites
    GIS and remote sensing
    Opis:
    Groundwater is a precious source of fresh water and a major component of the entire water supply. Both water quality and quantity could be satisfied by evaluating the groundwater potential sites (GWPS). This paper analyzes the ground-water potentials in a semi-arid region of Khyber Pakhtunkhwa, Pakistan. It describes a standard methodology to identify and map GWPS using integrated Geographical Information System (GIS) and remote sensing (RS) methods. Eight parameters including elevation, slope, drainage density, lineaments density, soil, geology, land use/land cover and rainfall were integrated to explore areas with groundwater holding capability. GWPS were delineated through subjective weights assigned after coupling various thematic layers using Saaty’s Analytical Hierarchical Process (AHP). The modelled GWPS were cross-checked with tube wells data. The result indicates that the central part of the study area has good potential for groundwater reserves/exploitation, where the factors i.e. moderate to high drainage density, sedimentary sequence of alluvial plain, low elevation etc. discern the central portion of the study area as a suitable site for groundwater. This study suggests that the applied method proves to be very significant and reliable tool for timely assessment of quality assured evaluation of groundwater resources. This study could be a systematic guide for future investigations for water related explorations, especially in semi-arid environments.
    Źródło:
    Geomatics and Environmental Engineering; 2022, 16, 1; 53--70
    1898-1135
    Pojawia się w:
    Geomatics and Environmental Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Long-term Changes in the Stability of Agricultural Landscapes in the Areas of Irrigated Agriculture of the Ukraine Steppe Zone
    Autorzy:
    Pichura, Vitalii
    Potravka, Larisa
    Domaratskiy, Yevhenii
    Vdovenko, Nataliia
    Stratichuk, Natalia
    Baysha, Kira
    Pichura, Ivan
    Powiązania:
    https://bibliotekanauki.pl/articles/24201644.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    irrigation
    sustainability
    agricultural landscape
    groundwater level
    climate
    fertilizer
    export potential
    national security
    Opis:
    Spatio-temporal assessment of the sustainability of agricultural landscapes over a long period (1892–2020 – 130 years) was carried out on the basis of archival spatial data for the territory of the Dnieper district of the Tauride province and modern data from the State Agency for Water Resources of Ukraine. Taking into account the historical patterns of the development of agriculture on the territory of the Dnieper district and the results of spatial modeling in 1892, territories with low (4.1 thousand hectares – 0.3% of the total area) and medium (310.3 thousand hectares – 23.8%) level of sustainability of agricultural landscapes, which are located in the lower reaches of the Dnieper, were identified. However, the large-scale development of the territory for agricultural land and the development of irrigated agriculture have led to the activation of land degradation processes, soil fertility and the deterioration of the stability of agricultural landscapes over large areas. As a result of spatial modeling, the state for 2020 in the irrigation zone recorded significant areas of agricultural land and adjacent territories with low (179.1 thousand hectares – 13.7% of the total area) and medium (419.0 thousand hectares – 32.1%) stability level. A comparative analysis of the stability of agrolandscapes for two time periods (1892 and 2020) showed that large-scale agricultural land development and an imbalanced land-use culture lead to constant and almost irreversible processes of reducing the stability of agrolandscapes in the areas of irrigation reclamation.
    Źródło:
    Journal of Ecological Engineering; 2023, 24, 3; 188--198
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Potencjalnie lecznicze wody radonowe Masywu Ślęży
    Potentially therapeutic radon waters of Ślęża Massif
    Autorzy:
    Przylibski, T. A.
    Fijałkowska, L.
    Bielecka, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074598.pdf
    Data publikacji:
    2008
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    radon
    222Rn
    wody podziemne
    wody radonowe
    groundwater
    radon water
    medicinal water
    potential therapeutic water
    Opis:
    The authors have conducted research on radon occurrence in the groundwater system of Ślęża Massif in the Fore-Sudetic block. The research included documenting occurrence of radon waters in the granitoids of Strzegom-Sobótka Massif, buildingNWandWslopes of Ślęża. Among several springs flowing out from the granitoids and their waste, the Klasztorne Spring is characterized by constant radon (222Rn) concentration (306 ±39 Bq/dm3), but also constant though small discharge during the year, which enables estimating the admissible volume of this spring at 0.3 m3/h. The results obtained during the research show that this water can be treated as potentially medicinal. It generates the opportunity for the nearby town of Sobótka to develop as a health resort. Confirming the presence of radon groundwater in the granitoid part of Ślęża Massif implies a great probability that such w occur in the whole area of the Strzegom-Sobótka intrusion. It opens possibilities of recognizing new resources of potential therapeutic water and entails the necessity to take suitable actions for radiological protection of people living in this area.
    Źródło:
    Przegląd Geologiczny; 2008, 56, 8/2; 763-771
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania potencjału redoks na przykładzie sudeckich wód leczniczych
    Research of redox potential on the example of curativewaters in the Sudetes Mts., Poland
    Autorzy:
    Dobrzyński, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074741.pdf
    Data publikacji:
    2010
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    chemizm wód podziemnych
    ptencjał redoks
    wody lecznicze
    Sudety
    groundwater chemistry
    redox potential
    curative water
    Sudetes
    Opis:
    In Poland, the redox potential (EH) is seldomly measured in groundwater. Since the year 2006 determination of redox potential is required for documenting properties of curative mineral waters. Investigations of redox conditions in groundwater need both proper measurement and interpretation. In the paper, crucial questions of: 1) redox equilibrium in groundwater, 2) field measurement, 3) correction methods, and 4) EH interpretation are presented. Some aspects of applying the redox potential for interpreting groundwater chemistry and using geochemical modelling are illustrated by hydrochemical data of curative waters from spas in the Sudetes Mts., SW Poland. Main reasons of the common redox non-equilibrium found in groundwater are co-existence of numerous aqueous redox pairs and usually non-equilibrium in particular redox pairs. Redox determinations have to be done in the field, and require extreme cleanness and precision, e.g., measuring without contact with the atmospheric air. Field measurements must be corrected to the standard hydrogen electrode, considering: type of reference electrode, concentration of electrode filling solution, type of standard redox solution, and water temperature. The redox potential has been measured in water at first from all the Sudetic spas, totally in 33 water intakes. In curative waters from the Sudetes corrected EH ranges between –159 mV and +343 mV. Usually, thermal waters show lower EH values than cold, CO2-rich waters. The lowest redox potential was found in the hottest thermal waters, i.e., in water from Zdzisław intake (in Lądek Zdrój) and C-2 intake (in Cieplice Śląskie Zdrój). Generally, the higher the pH, the lower the EH in groundwater. Methods of geochemical modelling, which are often and often applied in groundwater research, also require the EH determination. Information about EH are used in the calculation of speciation models of water, and affect the results of whole geochemical modelling as well as evaluations of the saturation state. The speciation-solubility modelling for the Sudetic curative waters, presented in the paper, shows that the proper correction of field EH measurement determines the quality of calculations. Improperly corrected EH values might lead to species activity errors, even up to several order of magnitudes, and erroneous interpretation of the mineral phases stability in the hydrogeochemical system.
    Źródło:
    Przegląd Geologiczny; 2010, 58, 1; 46-53
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    O potrzebie uwzględniania zasysania w praktycznych zagadnieniach filtracji wody podziemnej
    On the need of consideration of suction in practical problems of groundwater filtration
    Autorzy:
    Hauryłkiewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075852.pdf
    Data publikacji:
    2018
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    przepływ wody gruntowej
    ssanie
    ujemny potencjał przepływu
    Prawo Darcy
    groundwater flow
    suction
    negative flow potential
    Darcy’s law
    Opis:
    Seven examples of issues have been pointed out, when one should take into account the suction exerting on groundwater by capillary attraction from fine sands or similar other fine soils.
    Źródło:
    Przegląd Geologiczny; 2018, 66, 8; 481--482
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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