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    Wyświetlanie 1-5 z 5
    Tytuł:
    Morpholithodynamic properties of the shore zone on the Coast of Szczecin
    Autorzy:
    Racinowski, R.
    Pozlewicz, A.
    Seul, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/241095.pdf
    Data publikacji:
    2001
    Wydawca:
    Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
    Tematy:
    morpholithodynamic properties
    shore zone
    Baltic Sea
    Coast of Szczecin
    Opis:
    The paper deals with the southern part of the Baltic Sea shore zone, calIed the Coast of Szczecin, from the morpholithodynamical point of view. The coastal zone is divided into three types, namely coast, shore and nearshore. The morphodynamic character of the shore is presented in distinguished cliff and sandbar-dune areas. Further, lithological properties of the shore zone sediments are discussed. FinalIy an attempt of both qualitative and quantitative estimation of sediment supply to the nearshore zone is described, as are the natural conditions affecting its further transportation.
    Źródło:
    Archives of Hydro-Engineering and Environmental Mechanics; 2001, 48, 3; 95-110
    1231-3726
    Pojawia się w:
    Archives of Hydro-Engineering and Environmental Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of Deans curve to investigation of a long-term evolution of the Southern Baltic multi-bar shore profile
    Autorzy:
    Cerkowniak, G.R.
    Ostrowski, R.
    Pruszak, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/48611.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    cross-shore profile
    Baltic Sea
    shoreline
    migration
    Dean's curve
    long-term evolution
    Lubiatowo
    Opis:
    The paper presents the results of studies on the long-term evolution of the multi-bar cross-shore profiles. The analysis is focused on time-dependent variability of shoreline position, a modified parameter A of the conventional Dean's equation and a parameter F describing the amount of nearshore sediment resources in the multi-bar cross-shore profile. The study also deals with interrelationships between these quantities. The analysis is carried out using field data collected at Lubiatowo, Poland, on the dissipative shore, representative for the south Baltic. The considered coastal segment is found to be stable in the long-term scale. The results of analysis show that the parameter A can either increase or decrease together with the shoreline advance. It is concluded that the shoreline position change is a parameter unsatisfactorily representative for behaviour of the seashore. The use of the Dean's approximation for estimation of the sediment resources F on the multi-bar seashore profiles is found reasonable to eliminate the effects of peculiarities of such shores.
    Źródło:
    Oceanologia; 2017, 59, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A quasi phase-resolving model of net sand transport and short-term cross-shore profile evolution
    Autorzy:
    Ostrowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/48565.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    coastal zone
    hydrodynamics
    wave-current condition
    cross-shore profile
    Baltic Sea
    evolution
    modelling
    sand transport
    sediment transport
    hydrodynamic impact
    Opis:
    A way of modelling of the net sediment transport rate on a cross-shore profile and the resulting sea bed changes is presented. In the sediment transport computations, a three-layer model with a description of the bedload based on the water-soil mixture theory by Kaczmarek& Ostrowski (1998, 2002) is used. The modelling system is applied to wave-current conditions variable over the cross-shore profile, and determined using the computational frameworkof Szmytkiewicz (2002a, b). The sediment transport module incorporates the asymmetric wave approaches as proposed by Ostrowski (2002). Model simulations have been produced for uniformly sloped and multi-bar initial cross-shore profiles. Some of the model results are compared with the IBW PAN (Institute of Hydroengineering of the Polish Academy of Sciences) field data collected at the Coastal Research Station in Lubiatowo.
    Źródło:
    Oceanologia; 2003, 45, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Motion of water and sediment due to non-breaking waves in the swash zone
    Autorzy:
    Kapinski, J.
    Ostrowski, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/48514.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    water motion
    sediment
    non-breaking wave
    flow velocity
    sediment transport
    spatial variability
    sandy shore
    swash zone
    Baltic Sea
    shear stress
    Opis:
    A long wave run-up theory is applied to the modelling of wave-induced flow velocities, sediment transport rates and bottom changes in a swash zone. First, the properties of the water tongue motion and the resulting lithodynamic response are analysed theoretically. Next, an attempt is made to run the model for the natural conditions encountered on the southern Baltic Sea coast. The Lagrangian swash velocities are used to determine the Eulerian phase-resolved bed shear stresses with a momentum integral method, after which the motion of sand is described by the use of a two-layer model, comprising bedload and nearbed suspended load. Seabed evolution is then found from the spatial variability of the net sediment transport rates. The results presented are limited to cases of the small-amplitude waves that seem to be responsible for accretion on beaches.
    Źródło:
    Oceanologia; 2012, 54, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spring development of hydrolittoral rock shore communities on wave-exposed and sheltered sites in the Northern Baltic proper
    Autorzy:
    Eriksson Wiklund, A.-K.
    Malm, T.
    Honkakangas, J.
    Eklund, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/48999.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    spring development
    Baltic Sea
    community structure
    diversity
    development
    filamentous alga
    macroinvertebrate
    macroalga
    biomass
    intertidal zonation
    rocky shore
    dynamic environment
    alga
    Opis:
    Spring development in the hydrolittoral zone was investigated at five wave-sheltered and five wave-exposed sites on four occasions from late March to late May (every third week). The number of species was higher at the sheltered locations and increased significantly over time. The difference in community structure was significant: over 95% of the Bray-Curtis dissimilarities were due to the biomass of only eleven taxa, and the total Bray-Curtis dissimilarity between exposed and sheltered sites was 75%. Macroalgae made up 70–80% of the total biomass and was dominated by filamentous species. In contrast to previous studies, macroalgal biomass was higher at the exposed sites, which may be due to the fact that this was a spring study, unlike previous studies, which were conducted during summer.
    Źródło:
    Oceanologia; 2012, 54, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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