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| Titel |
Long-term changes in hydrographic conditions in northern Adriatic and its relationship to hydrological and atmospheric processes |
| VerfasserIn |
N. Supić, B. Grbec, I. Vilibić, I. Ivančić |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 22, no. 3 ; Nr. 22, no. 3 (2004-03-19), S.733-745 |
| Datensatznummer |
250014798
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| Publikation (Nr.) |
 copernicus.org/angeo-22-733-2004.pdf |
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| Zusammenfassung |
A very long data series (1921–2000) of hydrographic parameters
(temperature, salinity and density) collected in surface and bottom layers at a
station in the coastal zone in the northeastern Adriatic was analyzed. Seasonal
and interannual variability of the three parameters is described on the basis of
monthly and yearly averages. The seasonal cycles obtained were found to be
typical for the northern Adriatic. Interannual analysis showed that there was no
trend in temperature, salinity and density in the region during the interval
analyzed. The long-term series of yearly means of hydrographic parameters
were related to the long-term series of yearly means of several
hydrological/atmospheric parameters using different time lags of between 0 and 4 years.
These parameters are surface heat flux gained by insolation Qs
computed for Trieste, precipitation P in Trieste, Po River discharge rate R and two
atmospheric oscillation indexes, a Mediterranean Oscillation (MO) index and
North Atlantic Oscillation (NAO) index. At zero time lag the interannual changes
at the surface were found to be significantly related to changes in the Qs and
NAO index (temperature) and R (salinity and density). At the same time lag the
changes in the bottom were found to be related to the MO index (temperature,
salinity and density). Additionally, bottom salinity and density were significantly
related to R at a time lag of 1 year.
Key words. Oceanography: Physical (air-sea interactions;
hydrography) |
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