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Wyszukujesz frazę "water circulation" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Inflow of Atlantic-origin waters to the Barents Sea along glacial troughs
    Autorzy:
    Matishov, G.G.
    Matishov, D.G.
    Moiseev, D.V.
    Powiązania:
    https://bibliotekanauki.pl/articles/47953.pdf
    Data publikacji:
    2009
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    thermohaline
    bathymetry
    Atlantic-origin water
    Barents Sea
    water mass
    circulation
    climate
    glacial trough
    Opis:
    This paper discusses the role of glacial shelf topography in the formation of general oceanological and biological mechanisms in the Barents Sea. Analysis of geomorphological data and oceanographic observations obtained on board MMBI research vessels in 2001–08 has shown that: fluxes of Atlantic-origin waters pass along glacial troughs; the inflow of Atlantic waters to the Barents Sea from the west increased from 2001t ill 2007, although this advection began to weaken in 2008; vertical and horizontal thermohaline gradients intensified during the investigated period; a warm period similar to that of the 1930s was observed in the Barents Sea at the beginning of the 21st century.
    Źródło:
    Oceanologia; 2009, 51, 3; 321-340
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the possibility of convective overturning in the Slupsk Furrow overflow of the Baltic Sea
    Autorzy:
    Zhurbas, V.
    Elken, J.
    Paka, V.
    Piechura, J.
    Chubarenko, I.
    Vali, G.
    Golenko, N.
    Shchuka, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/48298.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Baltic Sea
    deep water
    dense water
    density stratification
    gravity current
    numerical simulation
    saline water
    Slupsk Furrow
    transverse circulation
    water mass
    Opis:
    Closely spaced CTD transects across the Słupsk Furrow displayed a ‘downward- bending’ of salinity contours below the salinity interface on the southern flank due to a transverse circulation in the saline water overflow. Numerical simulation of a gravity current in an idealized channel with geometry, dimensions and initial density stratification all much the same as in the Słupsk Furrow was applied to verify whether the downward-bending could be transformed into an inverted density stratification. Some arguments in favour of the possibility of convective overturning due to the differential transverse advection beneath the gravity current, brought on by the numerical simulations, are discussed.
    Źródło:
    Oceanologia; 2011, 53, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Temporal and spatial changes in the bio-optical properties of seawater in the Nordic Seas – AREX’2003 and 2006
    Autorzy:
    Drozdowska, V.
    Paryvkina, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/47895.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Atlantic water
    bio-optical property
    chlorophyll
    fluorescence
    Nordic Sea
    ocean circulation
    organic matter
    oxygen
    phytoplankton
    sea water
    shelf water
    spatial change
    Svalbard Islands
    temporal change
    water mass
    Opis:
    For many years the Nordic Seas have been the subject of research into ocean circulation carried out by the Institute of Oceanology PAS, especially the inflow of Atlantic water and the intensive turbulent mixing of these waters with Arctic and shelf waters. Ocean currents affect various biological processes, among them the supply of organic matter and oxygen, which constitute the foundation for the unique flora and fauna of the Svalbard islands. Spectrophotometric examinations of surface waters using an M32 B spectroflu- orophotometer (LDI Ltd.) were carried out repeatedly during Arctic cruises on board r/v ‘Oceania’. The results presented in this paper come from the AREX campaigns of 2003 and 2006. Analysis of the chlorophyll a fluorescence excitation spectra recorded shows an increase in phytoplankton abundance and the changes in the spatial distribution of the phytoplankton species characteristic of Atlantic, Arctic and shelf waters. The spatial patterns of the phytoplankton pigments and their abundance were compared with the physical characteristics of water masses. The analysis confirmed that phytoplankton species move together with the Atlantic water as this flows into northern latitudes.
    Źródło:
    Oceanologia; 2011, 53, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geostrophic current patterns off the Egyptian Mediterranean coast
    Autorzy:
    Kamel, M.S.
    Powiązania:
    https://bibliotekanauki.pl/articles/48462.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    geostrophic current circulation
    hydrographic data
    Egyptian Mediterranean coast
    Salum Bay
    Egypt
    Nile Delta
    Port Said
    nearshore area
    water mass
    surface water
    salinity
    oxygen content
    Opis:
    Using objectively analysed hydrographic data, currents have been calculated off the Egyptian Mediterranean coast at the surface and at 30, 50, 75, 100, 200 and 300 m depths for the four seasons. The surface circulation is dominated by an anticyclonic circulation off Salum Bay in winter, spring and summer. In nearshore areas, the current flows eastwards at the shallower levels but westwards at the deeper levels. Off the Nile Delta, the current is almost eastward with a higher velocity in summer and autumn, while in spring it is very weak. Off the area between Port Said and Rafah, there is a clear cyclonic circulation appearing in all seasons except winter. At 50 and 75 m depth, the velocity of the circulation is weak. At 100 m depth, the circulation that appeared between Matruh and Alamen in summer decreases in area and magnitude at the former depths. At 200 and 300 m in winter, the current velocity is quite low. In spring the current flows southwards off the area between Rafah and Port Said. In summer, the current off the area between Port Said and Rafah is quite strong and flows to the south. The situation in autumn is quite similar to that in summer, except in the eastern area, where the current is a westward one.
    Źródło:
    Oceanologia; 2010, 52, 2; 299-310
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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