Waves, currents and sea level variations along the Letipea - Sillamäe coastal section of the southern Gulf of Finland

• Autorzy: Suursaar Ű.
• Języki publikacji: EN

Abstrakty

EN

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-Jo~esuu 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.

Słowa kluczowe

EN

wave hindcast; upwelling; coastal jets; climate change; RDCP; Baltic Sea

• Wydawca: Polish Academy of Sciences, Institute of Oceanology ; Elsevier
• Czasopismo: Oceanologia
• Rocznik: 2010
• Tom: No. 52 (3)
• Strony: 391--416
• Opis fizyczny: bibliogr. 45 poz., tab., wykr.

Twórcy

autor

Suursaar Ű.

• Estonian Marine Institute, University of Tartu, Mäealuse 14, EE-12618 Tallinn, Estonia,

Bibliografia

• 1.Andrejev O., Myrberg K., Alenius P., Lundberg P., 2004, Mean circulation and water exchange in the Gulf of Finland - a study based on three-dimensional modelling, Boreal Environ. Res., 9 (1), 1-16.
• 2.BACC, 2008, Assessment of climate change for the Baltic Sea basin, Springer-Verlag, Berlin-Heidelberg, 473 pp.
• 3.Bowden K.F., 1983, Physical oceanography of coastal water, Ellis Horwood Ltd., Chichester, 302 pp.
• 4.Bychkova I.A., Viktorov S.V., 1987, Use of satellite data for identification and classification of upwelling in the Baltic Sea, Oceanology, 27 (2), 158-162.
• 5.CERC - Coastal Engineering Research Center, U.S. Army, 1984, Shore protection manual, Vol. 1, 3rd edn., U.S. Govt. Printing Office, Washington D.C., 719 pp.
• 6.Church J.A., White N. J., 2006, A 20th century acceleration in global sea-level rise, Geophys. Res. Lett., 33, L01602, doi:10.1029/2005GL024826.
• 7.IPCC - Intergovernmental Panel on Climate Change, 2007, The physical science basis, Contribution of Working Group I to the Fourth Assessment Report, S. Solomon, D. Qin, M. Manning, Z. Chen, M. Marquis, K.B. Averyt, M. Tignor, & H. L. Miller (eds.), Cambridge Univ. Press, New York, 996 pp.
• 8.Jaagus J., Post P., Tomingas O., 2008, Changes in storminess on the western coast of Estonia in relation to large-scale atmospheric circulation, Climate Res., 36 (1), 29-40.
• 9.Jankowski A., 2002, Variability of coastal water hydrodynamics in the southern Baltic - hindcast modelling of an upwelling event along the Polish coast, Oceanologia, 44, 395-418.
• 10.Keevallik S., Soomere T., Pärg R., Zhukova V., 2007, Outlook for wind measurements at Estonian automatic weather stations, Proc. Estonian Acad. Sci.-Eng., 13 (3), 234-251.
• 11.Kowalewski M., Ostrowski M., 2005, Coastal up- and downwelling in the southern Baltic, Oceanologia, 47 (4), 453-475.
• 12.Laanearu J., Lips U., 2003, Observed thermohaline fields and low-frequency currents in the Narva Bay, Proc. Estonian Acd. Sci.-Eng., 9 (2), 99-106.
• 13.Lass H.U., Talpsepp L., 1992, Observations of coastal jets in the Southern Baltic, Cont. Shelf. Res., 13 (2-3), 189-203.
• 14.Lehmann A., Krauss W., Hinrichsen H.-H., 2002, Effects of remote and local atmospheric forcing on circulation and upwelling in the Baltic Sea, Tellus A, 54 (3), 299-316.
• 15.Leppäranta M., Myrberg K., 2009, Physical oceanography of the Baltic Sea, Springer Praxis, Berlin-Heidelberg-New York, 378 pp.
• 16.Lessin G., Lips I., Raudsepp U., 2007, Modelling the nitrogen and phosphorus limitation on phytoplankton growth in Narva Bay, south-eastern Gulf of Finland, Oceanologia, 49 (2), 259-276.
• 17.Lips I., Lips U., Liblik T., 2009, Consequences of coastal upwelling events on physical and chemical patterns in the central Gulf of Finland (Baltic Sea), Cont. Shelf Res., 29 (15), 1836-1847.
• 18.Massel S.R., 2010, Surface waves in deep and shallow waters, Oceanologia, 52 (1), 5-52.
• 19.Meier H.E.M., Broman B., Kjellstrőm E., 2004, Simulated sea level in past and future climates of the Baltic Sea, Climate Res., 27 (1), 59-75.
• 20.Myrberg K., Andrejev O., 2003, Main upwelling regions in the Baltic Sea - a statistical analysis based on three-dimensional modelling, Boreal Environ. Res., 8 (2), 97-112.
• 21.Myrberg K., Lehmann A., Raudsepp U., Szymelfenig M., Lips I., Lips U., Matciak M., Kowalewski M., Krężel A., Burska D., Szymanek L., Ameryk A., Bielecka L., Bradtke K., Gałkowska A., Gromisz S., Jędrasik J., Kaluźny M., Kozłowski Ł., Krajewska-Sołtys A., Ołdakowski B., OstrowskiM., Zalewski M., Andrejev O., Suomi I., Zhurbas V., Kauppinen O.-K., Soosaar E., Laanemets J., Uiboupin R., Talpsepp L., Golenko M., Golenko N., Vahtera E., 2008, Upwelling events, coastal offshore exchange, links to biogeochemical processes - Highlights from the Baltic Sea Science Congress, March 19-22, 2007 at Rostock University, Oceanologia, 50 (1), 95-113.
• 22.Otsmann M., Suursaar Ű., Kullas T., 2001, The oscillatory nature of the flows in the system of straits and small semi-enclosed basins of the Baltic Sea, Cont. Shelf Res., 21 (15), 1577-1603.
• 23.Räämet A., Soomere T., Zaitseva-Pärnaste I., 2010, Variations in extreme wave heights and wave directions in the north-eastern Baltic Sea, Proc. Estonian Acad. Sci., 59 (2), 182-192.
• 24.Räämet A., Suursaar Ű., Kullas T., Soomere T., 2009, Reconsidering uncertainties of wave conditions in the coastal areas of the northern Baltic Sea, J. Coastal Res., Sp. Iss. (56), 257-261.
• 25.Seinä A., Peltola J., 1991, Duration of the ice season and statistics of fast ice thickness along the Finnish coast 1961-1990, Finn. Mar. Res., 258, 46 pp.
• 26.Soomere T., 2008, Extremes and decadal variations of the northern Baltic Sea wave conditions, [in:] Extreme ocean waves, E. Pelinovsky & C. Kharif (eds.), Springer, New York, 139-157.
• 27.Soomere T., Leppäranta M., Myrberg K., 2009, Highlights of the physical oceanography of the Gulf of Finland reflecting potential climate changes, Boreal Environ. Res., 14 (1), 152-165.
• 28.Soomere T., Myrberg K., Leppäranta M., Nekrasov A., 2008, The progress in knowledge of physical oceanography of the Gulf of Finland: a review for 1997-2007, Oceanologia, 50 (3), 287-362.
• 29.Soomere T., Zaitseva I., 2007, Estimates of wave climate in the northern Baltic Proper derived from visual wave observations at Vilsandi, Proc. Estonian Acad. Sci.-Eng., 13 (1), 48-64.
• 30.Soomere T., Zaitseva-Pärnaste I., Räämet A., 2010, Seasonal and long-term variations of wave conditions in Estonian coastal waters, Boreal. Environ. Res., (in press).
• 31.Sooäär J., Jaagus J., 2007, Long-term variability and changes in the sea ice regime in the Baltic Sea near the Estonian coast, Proc. Estonian Acd. Sci.-Eng., 13 (3), 189-200.
• 32.Stigebrandt A., Gustafsson B.G., 2003, Response of the Baltic Sea to climate change - theory and observations, J. Sea Res., 49 (4), 243-256.
• 33.Suursaar Ű., 2009, Interpretation of Doppler effect-based vertical velocity measurements in the coastal waters of Estonia, Baltic Sea: possible influence of upwelling, Langmuir circulation and turbidity, Fluid Structure Interaction, WIT Trans. Built Environ., Vol. 105, WIT Press, Southampton-Boston, 193-203.
• 34.Suursaar Ű., Aps R., 2007, Spatio-temporal variations in hydro-physical and -chemical parameters during a major upwelling event off the southern coast of the Gulf of Finland in summer 2006, Oceanologia, 49 (2), 209-228.
• 35.Suursaar Ű., Aps R., Kotta I., Roots O., 2009, North-East Estonian coastal sea: recovery from the past anthropogenic pressure and new stressors on the background of natural variability, Ecosystems and Sustainable Development VII, WIT Trans. Ecol. Environ., Vol. 122, WIT Press, Southampton-Boston, 331-342.
• 36.Suursaar Ű., Aps R., Martin G., Põllumäe A., Kaljurand K., 2008, Monitoring of the pulp mill effluents in the coastal waters of North Estonia, Water Pollution IX, WIT Trans. Ecol. Environ., Vol. 111, WIT Press, Southampton-Boston, 217-226.
• 37.Suursaar Ű., Kullas T., 2006, Influence of wind climate changes on the mean sea level and current regime in the coastal waters of west Estonia, Baltic Sea, Oceanologia, 48 (3), 361-383.
• 38.Suursaar Ű., Kullas T., 2009, Decadal variations in wave heights off Kelba, Saaremaa Island, and their relationships with changes in wind climate, Oceanologia, 51 (1), 39-61.
• 39.Suursaar Ű., Sooäär J., 2007, Decadal variations in mean and extreme sea level values along the Estonian coast of the Baltic Sea, Tellus A, 59 (2), 249-260.
• 40.Talpsepp L., 2008, On the influence of the sequence of coastal upwellings and downwellings on surface water salinity in the Gulf of Finland, Estonian J. Eng., 14 (1), 29-41.
• 41.Vallner L., Sildvee H., Torim A., 1988, Recent crustal movements in Estonia, J. Geodyn., 9 (2-4), 215-223.
• 42.Voipio A. (ed.), 1981, The Baltic Sea, Elsevier Oceanogr. Ser., Amsterdam, 418 pp.
• 43.Wang K., Leppäranta M., Gästgifvars M., Vainio J., Wang C., 2008, The drift and spreading of the Runner 4 oil spill and the ice conditions in the Gulf of Finland, winter 2006, Estonian J. Earth Sci., 57 (3), 181-191.
• 44.Weisberg R.H., Black B.D., Li Z., 2000, An upwelling case study on Florida's west coast, J. Geophys. Res., 105 (C5), 11 459-11 469.
• 45.Weisse R., Günther R., 2007, Wave climate and long-term changes for the Southern North Sea obtained from a high-resolution hindcast 1958-2002, Ocean Dynam., 57 (3), 161-172.