Waves, currents and sea level variations along the Letipea - Sillamäe coastal section of the southern Gulf of Finland
Variations in the hydrodynamic conditions were studied on the basis of 336 days of measurements with a Doppler current profiler. With wave data as a calibration reference, a semi-empirical hindcast of wave parameters is presented in the fetch-limited near-shore area for the period 1966-2008. A resul...
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| Format: | Article |
| Language: | English |
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Elsevier
2010-09-01
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| Series: | Oceanologia |
| Subjects: | |
| Online Access: | http://www.iopan.gda.pl/oceanologia/52_3.html#A4 |
| _version_ | 1818682733754318848 |
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| author | Ülo Suursaar |
| author_facet | Ülo Suursaar |
| author_sort | Ülo Suursaar |
| collection | DOAJ |
| description | Variations in the hydrodynamic conditions were studied on the basis of 336 days of measurements with a Doppler current profiler. With wave data as a calibration reference, a semi-empirical hindcast of wave parameters is presented in the fetch-limited near-shore area for the period 1966-2008. A resultant 4-6 cm s-1 westward current dominated along the coast. Occasional fast sub-surface westward currents under modest wind forcing, as well as asymmetrical vertical profiles for westward and eastward currents indicated the influence of upwelling-related baroclinic coastal jets. The average frequency of upwelling was estimated at 17%; some of the events were identified in near-homothermic winter conditions on the basis of salinity and multi-layer flow records. While the mean sea level trend at Narva-Jõesuu roughly approximated the global estimates for 1899-2009, the annual maximum sea level increase was 5-8 mm yr-1. Both mean and maximum wave heights declined as a result of decreasing winds from the north. |
| first_indexed | 2024-12-17T10:23:32Z |
| format | Article |
| id | doaj.art-3272a06116ad42c2b8505076445b1eea |
| institution | Directory Open Access Journal |
| issn | 0078-3234 |
| language | English |
| last_indexed | 2024-12-17T10:23:32Z |
| publishDate | 2010-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Oceanologia |
| spelling | doaj.art-3272a06116ad42c2b8505076445b1eea2022-12-21T21:52:43ZengElsevierOceanologia0078-32342010-09-01523391416Waves, currents and sea level variations along the Letipea - Sillamäe coastal section of the southern Gulf of FinlandÜlo SuursaarVariations in the hydrodynamic conditions were studied on the basis of 336 days of measurements with a Doppler current profiler. With wave data as a calibration reference, a semi-empirical hindcast of wave parameters is presented in the fetch-limited near-shore area for the period 1966-2008. A resultant 4-6 cm s-1 westward current dominated along the coast. Occasional fast sub-surface westward currents under modest wind forcing, as well as asymmetrical vertical profiles for westward and eastward currents indicated the influence of upwelling-related baroclinic coastal jets. The average frequency of upwelling was estimated at 17%; some of the events were identified in near-homothermic winter conditions on the basis of salinity and multi-layer flow records. While the mean sea level trend at Narva-Jõesuu roughly approximated the global estimates for 1899-2009, the annual maximum sea level increase was 5-8 mm yr-1. Both mean and maximum wave heights declined as a result of decreasing winds from the north.http://www.iopan.gda.pl/oceanologia/52_3.html#A4Wave hindcastUpwellingCoastal jetsClimate changeRDCPBaltic Sea |
| spellingShingle | Ülo Suursaar Waves, currents and sea level variations along the Letipea - Sillamäe coastal section of the southern Gulf of Finland Oceanologia Wave hindcast Upwelling Coastal jets Climate change RDCP Baltic Sea |
| title | Waves, currents and sea level variations along the Letipea - Sillamäe coastal section of the southern Gulf of Finland |
| title_full | Waves, currents and sea level variations along the Letipea - Sillamäe coastal section of the southern Gulf of Finland |
| title_fullStr | Waves, currents and sea level variations along the Letipea - Sillamäe coastal section of the southern Gulf of Finland |
| title_full_unstemmed | Waves, currents and sea level variations along the Letipea - Sillamäe coastal section of the southern Gulf of Finland |
| title_short | Waves, currents and sea level variations along the Letipea - Sillamäe coastal section of the southern Gulf of Finland |
| title_sort | waves currents and sea level variations along the letipea sillamae coastal section of the southern gulf of finland |
| topic | Wave hindcast Upwelling Coastal jets Climate change RDCP Baltic Sea |
| url | http://www.iopan.gda.pl/oceanologia/52_3.html#A4 |
| work_keys_str_mv | AT ulosuursaar wavescurrentsandsealevelvariationsalongtheletipeasillamaecoastalsectionofthesoutherngulfoffinland |