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| Titel |
Acoustic Doppler Current Profiler observations in the southern Caspian Sea: shelf currents and flow field off Feridoonkenar Bay, Iran |
| VerfasserIn |
P. Ghaffari, V. Chegini |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 6, no. 3 ; Nr. 6, no. 3 (2010-07-22), S.737-748 |
| Datensatznummer |
250003582
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| Publikation (Nr.) |
 copernicus.org/os-6-737-2010.pdf |
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| Zusammenfassung |
| The results of offshore bottom-mounted ADCP measurements and wind records
carried out from August to September 2003 in the coastal waters off
Feridoon-kenar Bay (FB) in the south Caspian Sea (CS) are examined in order
to characterize the shelf motion, the steady current field and to determine
the main driving forces of currents on the study area. Owing to closed basin
and absence of the astronomical tide, the atmospheric forcing plays an
important role in the flow field of the CS. The lasting regular sea breeze
system is present almost throughout the year. This system performs the
forcing in diurnal and semi-diurnal bands similar to tides in other regions.
In general, current field in the continental shelf could be separated into
two distinguishable schemes, which in cross-shelf direction is dominated by
high frequencies (1 cpd and higher frequencies), and in along-shelf
orientation mostly proportional to lower frequencies in synoptic weather
bands. Long-period wave currents, whose velocities are much greater than
those of direct wind-induced currents, dominates the current field in the
continental shelf off FB. The propagation of the latter could be described
in terms of shore-controlled waves that are remotely generated and travel
across the shelf in the southern CS. It has also been shown that long term
displacements in this area follow the classic cyclonic, circulation pattern
in the southern CS. |
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