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    Wyświetlanie 1-6 z 6
    Tytuł:
    Structure of the South-Western Part of the Curonian Spit
    Autorzy:
    Badyukova, E. N.
    Zindarev, L. A.
    Lukyanova, S. A.
    Solovieva, G. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/241278.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
    Tematy:
    coastal barrier
    lagoon
    erosion
    underwater slope
    fluvioglacial deposits
    Opis:
    This article addresses the southern sector of the Curonian Spit, the largest coastal barrier of the Baltic Sea. A comparative analysis of the deposits that make up parts of the Curonian and Vistula Spits is given. The detailed analysis of the geological and geomorphological structure of the southern part of the Curonian Spit suggests that, within this sector, it is not a sedimentary barrier created by wave action and Aeolian processes in the Holocene, but a part of a pre-Holocene fluvioglacial plain. Field work has shown that the ancient alluvial or fluvioglacial plain is in the lagoon shore of the Vistula Spit.
    Źródło:
    Archives of Hydro-Engineering and Environmental Mechanics; 2018, 65, 2; 109-122
    1231-3726
    Pojawia się w:
    Archives of Hydro-Engineering and Environmental Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Coastal dunes of the Baltic Sea shores: a review
    Autorzy:
    Łabuz, Tomasz Arkadiusz
    Grunewald, Ralf
    Bobykina, Valentina
    Chubarenko, Boris
    Česnulevičius, Algimantas
    Bautrėnas, Artūras
    Morkūnaitė, Regina
    Tõnisson, Hannes
    Powiązania:
    https://bibliotekanauki.pl/articles/1051573.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    coastal dunes
    dune relief
    barrier types
    dune distribution
    Baltic Sea coast
    Opis:
    The article summarises results of studies conducted along the Baltic Sea sandy coasts by scientists involved in coastal dune research, and presents an attempt to describe the types and distribution of dune coasts. The Baltic Sea coasts feature lower and higher foredunes. The lowland behind the coastal dune belt is covered by wandering or stabilised inland dunes – transgressive forms, mainly parabolic or barchans. The source of sediment for dune development includes fluvioglacial sands from eroded coasts, river-discharged sand, and older eroded dunes. Due to the ongoing erosion and coastal retreat, many dunes have been eroded, and some are withdrawing onto the adjacent land. There are visible differences between the south-eastern, western, and northern parts of the Baltic Sea coast with respect to dune development. The entire southern and eastern coast abounds in sand, so the coastal dunes are large, formerly or currently wandering formations. The only shifting dunes are found at the Polish and the Russian–Lithuanian coasts on the Łebsko Lake Sandbar as well as on the Vistula and Curonian Spits. The very diverse shoreline of the south-western coast experiences a scarcity of larger sandy formations. Substantial parts of the Baltic Sea sandy coasts have been eroded or transformed by humans. The northern part of the Baltic Sea coast features mainly narrow and low sandy coasts (e.g. in Estonia). Further north, sandy dunes are virtually absent.
    Źródło:
    Quaestiones Geographicae; 2018, 37, 1; 47-71
    0137-477X
    2081-6383
    Pojawia się w:
    Quaestiones Geographicae
    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
    Tytuł:
    Kinetics of marine surfactant adsorption at an air-water interface. Baltic Sea studies
    Autorzy:
    Pogorzelski, S.J.
    Kogut, A.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/48394.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    coastal water
    water interface
    surface adsorption
    marine film
    kinetics
    Baltic Sea
    adsorption barrier
    adsorption
    Opis:
    The paper contains the results of studies of natural surface film adsorption kinetics carried out in inland waters and in shallow offshore regions of the Baltic Sea during 2000–01 under calm sea conditions. The novel approach presented here for the adsorption dynamics is based on the mixed kinetic-diffusion model and analyses of the surface pressure-time plots at short (t → 0) and long (t→∞) adsorption time intervals. Values of the effective relative diffusion coefficient Deff/D (= 0.008 − 0.607) and energy barrier for adsorption Ea/RT (= 0.49 − 7.10) agree well with the data reported for model non-ionic surfactant solutions of pre-cmc concentrations. Wind speed is one of the factors affecting the adsorption barrier via the increased surface pressure of the natural film exposed to wind shear stress (∼ U10 2),a nd enters the relation Ea/RT = 1.70U10 1/3.
    Źródło:
    Oceanologia; 2001, 43, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Taphonomy of mass mollusc shell accumulation at Amvrakikos Gulf lagoon complex sandy barriers (NW Greece)
    Autorzy:
    Tsolakos, K.
    Katselis, G.
    Theodorou, J.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078931.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    mollusc shell
    sandy barrier
    taphonomy
    bivalve shell
    accumulation
    Cerastoderma glaucum
    Polititapes aureus
    coastal lagoon
    Amvrakikos Gulf
    Greece
    Opis:
    The preservation status of the mollusc shell accumulation of sandy barriers at the Amvrakikos Gulf lagoon complex was studied. Taphonomic shell analysis of dead mollusc depositions was undertaken in the summer of 2016 at Amvrakikos lagoon complex within the Tsoukalio and Logarou sandy barriers, which showed significant differences among the major abundant bivalve species of Cerastoderma glaucum and Polititapes aureus. Both hydrodynamic transport and differential exposure to environmental conditions differ among the accumulated shells depositions of the lagoonal sandy barriers. The heavier and more durable shells of C. glaucum are frequently found concentrated at the Tsoukalio lagoon accumulations and show a higher intensity of fragmentation whereas at Logarou lagoon the bioerosion and abrasion is more intense. On the other hand, the lighter, thinner, and thus more fragile shells of P. aureus show higher concentration and intensity of fragmentation and bioerosion at Logarou lagoon sandy barriers. The continuous deposition of shells at Tsoukalio lagoonal sandy barriers, contrary to the longterm deposition at Logarou lagoon, explains the different types of accumulations among the lagoons which are attributed to the geomorphology of the sandy shores as well as the morphological characteristics of the different shells.
    Źródło:
    Oceanologia; 2021, 63, 2; 179-193
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Torfowiska Mierzei i Niziny Karwieńskiej potencjalnym archiwum ekstremalnych zalewów sztormowych
    The peatlands of the Karwia Barrier and Karwia Lowland as a potential archive of extreme storm floods
    Autorzy:
    Moskalewicz, Damian
    Powiązania:
    https://bibliotekanauki.pl/articles/578304.pdf
    Data publikacji:
    2016
    Wydawca:
    Łódzkie Towarzystwo Naukowe
    Tematy:
    osady sztormowe
    fale burzowe
    zagrożenia naturalne
    Mierzeja Karwieńska
    Nizina Karwieńska
    torfowiska nadbrzeżne
    storm deposits
    storm surges
    natural hazards
    Karwia Barrier
    Karwia Lowland
    coastal peatlands
    Opis:
    Torfowiska zlokalizowane w obrębie Mierzei i Niziny Karwieńskiej stanowią potencjalne archiwum ekstremalnych wezbrań sztormowych. W trakcie badań terenowych dokonano rozpoznania utworów podpowierzchniowych w celu weryfikacji doniesień o możliwości występowania w tym rejonie współczesnych osadów sztormowych. Wykonano liczne sondowania, z których najważniejsze zaprezentowano w artykule. Wyraźny zapis sedymentacyjny procesów sztormowych zachował się jedynie w obrębie torfowiska najbardziej eksponowanego w kierunku morza, przy ujściu rzeki Czarnej Wdy. Cechą charakterystyczną osadów sztormowych okazała się malejąca miąższość osadów piaszczystych w kierunku lądu oraz ostra granica erozyjna w spągu. Obserwacja cech teksturalnych piasku wskazuje na pochodzenie osadu z plaż i wydm Mierzei Karwieńskiej. W obrębie zaplecza bariery nie znaleziono osadów, które mogłyby być powiązane ze sztormami. W związku z tym stwierdzono, że w przeszłości nie doszło do znaczących powodzi sztormowych, które pozostawiłyby w obrębie Niziny Karwieńskiej łatwo wyróżnialną warstwę osadów piaszczystych.
    Karwia Barrier peatlands are a potential archive of extreme storm floods. During the field work, the subsurface sediments of the investigated area were surveyed to verify the hypothesis of a presence of storm surge deposits within the barrier and accompanying peatlands. Numerous shallow drillings were performed and the most essential of them are presented in this paper. A distinguishable sedimentological mark of storm surge processes was recognized only in a peatland exposed directly to the sea, in close neighbourhood to the Czarna Wda river mouth. Thickness of sandy deposits decreasing landward and a sharp erosive boundary in the base were the most common features. Textural characteristics of sandy grains revealed a beach and dune source of these sediments. Peatlands located at the back of the barrier lacked sediments, which could be linked to the storm processes. This leads to a conclusion that none of historical storm floods left an easily disti nguishable sandy layer within the Karwia Lowland.
    Źródło:
    Acta Geographica Lodziensia; 2016, 105; 141-148
    0065-1249
    Pojawia się w:
    Acta Geographica Lodziensia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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