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Wyszukujesz frazę "water mass" wg kryterium: Temat

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    Wyświetlanie 1-4 z 4
    Tytuł:
    Changes in Atlantic water characteristics in the South-Eastern Mediterranean Sea as a result of natural and anthropogenic activities
    Autorzy:
    Said, M.A.
    Gerges, M.A.
    Maiyza, I.A.
    Hussein, M.A.
    Radwan, A.A.
    Powiązania:
    https://bibliotekanauki.pl/articles/47724.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    Atlantic water
    change
    Mediterranean Sea
    Egypt
    natural activity
    anthropogenic activity
    temperature
    salinity
    trend
    water mass
    subsurface water
    water column
    Źródło:
    Oceanologia; 2011, 53, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An overview of the teta - S correlations in Fram Strait based on the MIZEX 84 data
    Autorzy:
    Schlichtholz, P.
    Houssais, M.N.
    Powiązania:
    https://bibliotekanauki.pl/articles/47520.pdf
    Data publikacji:
    2002
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    temperature
    Fram Strait
    Atlantic water
    hydrographic cast
    MIZEX 84 experiment
    teta-S diagram
    water mass
    salinity
    Arctic Ocean
    Opis:
    The water masses in Fram Strait have been analyzed on the basis of hydrographic casts taken in summer 1984 during the MIZEX 84 experiment. In particular, θ − S diagrams for 16 areas, each 5◦ in longitude and 1◦ in latitude, covering the strait from 77◦N to 81◦ N are used to characterize the water masses and discuss their possible origin. Near the surface, the East Greenland Polar Front clearly separates the lighter, cold and fresh Polar Water (PW) from the heavier, warm and saline Atlantic Water (AW). In the upper ocean, the data show a large spreading of the temperature maximum in the θ − S space associated with different modes of the AW recirculating southward below the PW. Two geographically distinct salinity minima are found in the intermediate layer below the AW. The denser one, in the Boreas Basin, is a feature typical of the Arctic Intermediate Water (AIW) formed by winter convection to the south of the strait, while the lighter one is sandwiched in the Arctic Ocean outflow between the AW layer and the Upper Polar Deep Water (UPDW) characterized by a downward salinity increase. In the deep layer, two salinity maxima are present. The shallower (and warmer) one, associated with the Canadian Basin Deep Water (CBDW), appears all along the East Greenland Slope. A similar but weaker maximum is also found in the southeastern part of the strait. This maximum is perhaps a remnant of the maximum in the East Greenland Current after it has been recirculated back to the strait around the cyclonic gyres of the Nordic Seas. The deeper one appears typically as a near-bottom salinity jump characteristic of the Eurasian Basin Deep Water (EBDW). The jump is found in two distinct areas of the strait, to the north-west in the Lena Trough and to the south-east in the rift valley of the Knipovich Ridge. The maximum in the former area should have been advected from the Arctic Ocean below the CBDW, while the maximum in the latter area might have originated from haline convection on the adjacent shelves. Some EBDW is trapped in the Molloy Deep over a denser water with salinity decreasing down to the bottom and temperature in the range of the Greenland Sea Deep Water (GSDW).
    Źródło:
    Oceanologia; 2002, 44, 2
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Meteorological influences on the surface hydrographic patterns of the North Aegean Sea
    Autorzy:
    Sylaios, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/48232.pdf
    Data publikacji:
    2011
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    water mass
    Baltic Sea
    Aegean Sea
    sea water
    hydrographic data
    wind stress
    bottom topography
    meteorological influence
    hydrographic pattern
    Anthos Peninsula
    salinity
    Opis:
    Hydrographic data from the North Aegean Sea were used to examine the summer variability of surface water masses during the period 1998–2001. Attention was placed on the surface hydrographic features of the area, such as the Black Sea Water (BSW) plume expansion, the frontal characteristics of the BSW with the Levantine Intermediate Water (LIW) and the variability of submesoscale hydrographic features (such as the Samothraki Anticyclone). Strong southerly wind stresses were found responsible for relaxing the horizontal density gradients across the BSW-LIW frontal zone and displacing this front to the north of Lemnos Island, thus suppressing the Samothraki Anticyclone towards the Thracian Sea continental shelf. Under northerly winds, the BSW-LIWfront returns to its regular position (south of Lemnos Island), thus allowing the horizontal expansion of the Samothraki gyre up to the Athos Peninsula. Present results indicate the importance of medium-term wind stress effects on the generation of Samothraki Anticyclone suppression/expansion events.
    Źródło:
    Oceanologia; 2011, 53, 1
    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
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