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    Tytuł:
    Bezpośrednie pomiary podmorskiego zasilania wodami podziemnymi Zatoki Puckiej
    In situ measurements of submarine groundwater supply from the Puck Lagoon
    Autorzy:
    Bublijewska, E.
    Łęczyński, L.
    Marciniak, M.
    Chudziak, Ł.
    Kłostowska, Ż.
    Zarzeczańska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2075655.pdf
    Data publikacji:
    2017
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    zasilanie wodami podziemnymi
    Południowe Morze Bałtyckie
    Zatoka Pucka
    drenaż
    SGD
    submarine groundwater discharge
    Southern Baltic Sea
    Puck Lagoon
    drainage
    Opis:
    Fresh water accumulated beneath the sea floor may flow through sediments into the sea water. This process, opposite to infiltration, is called Submarine Groundwater Discharge (SGD). The Southern Baltic Sea coastal zone represents an interesting object of study because its bottom deposits show seepages of fresh groundwater. The study involved Puck Bay and the adjacent coastal belt of the Kashubian Coast plateau. Research of potential outflows of fresh groundwater was done through a thermal imaging of the study area. An articulate thermal anomaly allowed predetermining the location of research points. Groundwater outflows in the seabed were confirmed by measurements of chloride content and electrical conductivity of water samples. The paper presents two new devices: a filtrometer that enables measurement of water filtration intensity during drainage, and a gradientmeter that measures the hydraulic gradient. The use of both devices allows determination of the in situ hydraulic conductivity. Results of the research have shown relationships between fresh groundwater and the sea-bottom sediments.
    Źródło:
    Przegląd Geologiczny; 2017, 65, 11/2; 1173--1178
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Baltic Sea coastal erosion; a case study from the Jastrzębia Góra region
    Autorzy:
    Uścinowicz, G.
    Kramarska, R.
    Kaulbarsz, D.
    Jurys, L.
    Frydel, J.
    Przezdziecki, P.
    Jegliński, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/94521.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    barrier and cliff coast
    coastal landslides
    coastal erosion
    coastal protection
    southern Baltic Sea
    wybrzeże klifowe
    osuwiska
    erozja wybrzeża
    ochrona wybrzeża
    południowe Morze Bałtyckie
    Opis:
    The coastline in the Jastrzębia Góra area can be divided into three major zones of general importance: a beach and barrier section, a cliff section, and a section protected by a heavy hydrotechnical construction. These areas are characterised by a diverse geology and origin, and hence different vulnerability to erosion. In addition, observations have demonstrated a different pace of erosion within each zone. Based on the results obtained by remote sensing methods (analysis of aerial photographs and maps), it has been determined that the coastline in the barrier area, i.e., to the west of Jastrzębia Góra, moved landwards by about 130 m, in a period of 100 years, and 80 m over about 50 years. A smaller displacement of the shoreline could be observed within the cliff. Between the middle of the twentieth and the start of the twenty-first centuries the shore retreated by about 25 m. However, in recent years, an active landslide has led to the displacement of the uppermost part of the cliff locally up to 25 m. Another issue is, functioning since 2000, a heavy hydrotechnical construction which has been built in order to protect the most active part of the cliff. The construction is not stable and its western part, over a distance of 50 m, has moved almost 2 m vertically downwards and c. 2.5 m horizontally towards the sea in the past two years. This illustrates that the erosional factor does not comprise only marine abrasion, but also involves land-based processes determined by geology and hydrogeology. Changes in the shoreline at the beach and barrier part are constantly conditioned by rising sea levels, the slightly sloping profile of the sea floor and low elevation values of the backshore and dune areas. Cliffs are destroyed by mass wasting and repetitive storm surges that are responsible for the removal of the colluvium which protects the coast from adverse wave effects. Presumably, mass movements combined with groundwater outflow from the cliff, plus sea abrasion cause destabilisation of the cliff protection construction.
    Źródło:
    Geologos; 2014, 20, 4; 259-268
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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