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    Wyświetlanie 1-7 z 7
    Tytuł:
    Microfouling development on artificial substrates deployed in the central Red Sea
    Autorzy:
    Balgadi, A.A.
    Salama, A.J.
    Satheesh, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/47499.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    microfouling
    biofilm
    nutrient cycling
    diatom
    sea water
    winter
    summer season
    Red Sea
    Saudi Arabia
    Źródło:
    Oceanologia; 2018, 60, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Baltic herring (Clupea harengus membras) spawning grounds on the Lithuanian coast: current status and shaping factors
    Autorzy:
    Saskov, A.
    Siaulys, A.
    Bucas, M.
    Daunys, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/47793.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Baltic herring
    Clupea harengus membras
    spawning season
    geomorphology
    bathymetry
    Lithuania
    Baltic Sea
    coastal water
    pelagic ecosystem
    water temperature
    Źródło:
    Oceanologia; 2014, 56, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spatial and interannual variations of seasonal sea surface temperature patterns in the Baltic Sea
    Autorzy:
    Bradtke, K.
    Herman, A.
    Urbanski, J.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48507.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    spatial variation
    interannual variation
    sea surface temperature
    seasonality
    global climate change
    thermal season
    annual cycle
    transitional period
    Baltic Sea
    Opis:
    On the basis of monthly averaged satellite data, this study examined how the annual cycle of the Baltic Sea surface temperature (SST) varied spatially and temporally during the period 1986–2005. We conclude that there are two main thermal seasons in the Baltic Sea separated only by short transitional periods – spring lasting about one month, and autumn lasting two months. Generally speaking, summer covers the part of the year from June to October with the highest monthly mean SST in August. Winter, with a minimum monthly mean SST in February in shallow waters or in March in deeper areas, lasts from December to April. As a result of climate changes over the Baltic Sea region, strong positive trends in SST occur in the summer months. In consequence, the period with extremely high sea surface water temperatures has become slightly longer in the central Baltic. In the last decade winter changes in SST display zero or even negative tendencies. The investigated period was characterized by an annual increase in mean temperatures of about 0.03–0.07◦C. However, the rates of monthly mean SST changes were sometimes more than three times as high.
    Źródło:
    Oceanologia; 2010, 52, 3; 345-362
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Partitioning of solar radiation in Arctic sea ice during melt season
    Autorzy:
    Lu, P.
    Cheng, B.
    Lepparanta, M.
    Li, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/48057.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    solar radiation
    partitioning
    Arctic Sea
    sea ice
    melt season
    solar energy
    energy absorption
    mass balance
    spectral irradiance
    numerical modelling
    Źródło:
    Oceanologia; 2018, 60, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Study of ice cover impact on hydrodynamic processes in the Curonian Lagoon through numerical modeling
    Autorzy:
    Idzelyte, R.
    Mezine, J.
    Zemlys, P.
    Umgiesser, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/2079075.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    ice cover
    water circulation
    shallow water
    salinity
    hydrodynamic process
    numerical modelling
    remote sensing
    meteorological season
    satellite observation
    Curonian Lagoon
    Opis:
    In this study, we present an analysis of the hydrodynamic processes under ice cover in the largest lagoon in Europe – the Curonian Lagoon. By applying a finite element numerical modelling system (SHYFEM) and remote sensing ice cover data, the residual circulation, water fluxes through specific areas of the lagoon, saltwater intrusions, and water residence time (WRT) were investigated. The results, taken over an 11 year period, show that ice cover affects the circulation patterns in the lagoon by forming and shifting different gyre systems. Different circulation patterns are observed throughout all the meteorological seasons of the year. Since ice decreases circulation, water fluxes also decrease, especially in a cross-section in the middle of the lagoon, where the ice-cover suppressed wind-stress has a higher impact on the water movement rather than it has in the north. The presence of ice cover also decreases the salinity of the water in the northern part of the lagoon. In general, the salinity in the water column averaged over different periods is vertically uniform, however, a slight increase of salt concentration can be observed at the bottom layers in the Klaipėda Strait, where the difference of >1 PSU between bottom and top layers shows up on average 130 hours per year. The ice cover also decreases the saltwater intrusions into the lagoon by nearly 14 days per year. The increase of WRT is most prominent after long ice cover periods, away from the river inlets, especially in the southern part of the lagoon, where without the help of the wind action, water takes a longer time to renew than in the northern part.
    Źródło:
    Oceanologia; 2020, 62, 4PA; 428-442
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inherent optical properties and particulate matter distribution in summer season in waters of Hornsund and Kongsfjorden, Spitsbergen
    Autorzy:
    Sagan, S.
    Darecki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/49136.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    inherent optical property
    particulate matter
    vertical structure
    summer season
    Atlantic water
    Hornsund
    Kongsfjorden
    Spitsbergen
    hydrological regime
    water mass
    water column
    Opis:
    Two Spitsbergen fjords, Hornsund and Kongsfjorden, are known for being under different hydrological regimes. The first is cold, separated from warm Atlantic water by East Spitsbergen Current, while Kongsfjorden is frequently penetrated by relatively warm Atlantic water. On the other hand, both are under strong influence of water discharge from glaciers and land freshwater input. During the period of observation in both fjords a dominant water mass was Surface Water, which originates mainly from glacial melt. The presence of suspended matter introduced with melt water in Surface Water is reflected by highest values of light attenuation and absorption coefficients recorded in areas close to glacier both in Hornsund and Kongsfjorden. In Hornsund the maximum light attenuation coefficient cpg(555) was 5.817 m−1 and coefficient of light absorption by particles ap(676) = 0.10 m−1. In Kongsfjorden the corresponding values were 26.5 m−1 and 0.223 m−1. In Kongsfjorden suspended matter of the size class 20–200 μm dominated over fractions smaller than 20 μm while in Hornsund dominating size fraction was 2–20 μm. The results provide an evidence of considerable range of variability of the optical properties mainly due to glacial and riverine runoff. The scale of variability of particulate matter in Kongsfjorden is bigger than in Hornsund. Most of the variability in Hornsund can be attributed to glaciers discharge and a presence of particles of mineral origin, while in Kongsfjorden the organic and mineral particles contribute almost equally to defining the optical properties of water.
    Źródło:
    Oceanologia; 2018, 60, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A comparison of ASCAT wind measurements and the HIRLAM model over the Baltic Sea
    Autorzy:
    Sluzenikina, J.
    Mannik, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48369.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    backscattering
    Baltic Sea
    HIRLAM model
    numerical weather prediction
    ocean surface
    sea surface
    stormy season
    wind direction
    wind field
    wind scatterometer
    wind speed
    Opis:
    This paper presents a comparison of the wind data measured by the ASCAT polar-orbiting satellite scatterometer and winds forecast by the numerical weather prediction model HIRLAM in the Baltic Sea region during the stormy season in 2009. Two different resolution models were used in the comparison. Mutual quality and uncertainty characteristics of the measurements and predictions are determined. The results of the study show that the ASCAT wind data are well correlated with the HIRLAM predicted winds, which raises the credibility of both data sources in operational and hindcasting applications over the Baltic Sea. A case of phase error in a HIRLAM forecast of cyclonic activity over the Baltic Sea is discussed.
    Źródło:
    Oceanologia; 2011, 53, (1-TI)
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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