Abstract
The Bulgarian tide gauges in the towns of Varna and Burgas have started working since 1928. The location of the two installations is described and a short analysis of the data is presented. The monthly and annual mean sea levels are revised using available benchmark datum history information.
Data sets of atmospheric pressure and sea surface temperature during the same time span are also used to find the possible links between the sea-level variations in the two local regions and processes. The basic features of sea-level variations in the regions of the two tide gauges are analysed. A spectral analysis of the monthly tide records is performed both in time and frequency domain. The contributions of periodic components ranging between 8 and 19 years are attenuated using symmetric low-pass filters. The filtered series are subjected to spectral analysis through the Fast Fourier Transform method. The annual and semi-annual cycle and the longer-term variability are analysed and they show to be consistent over the area. The results indicate that the sea level of Varna and Burgas has linear trend of 1.4 ± 0.3 mm/year and 1.6 ± 0.4 respectively. No significant trends were found in the meteorological records. The effects of the local atmospheric pressure variations on the amplitudes of the annual sea-level changes are about 7% for Varna and 5% for Burgas of the amplitudes obtained after the effects are corrected. It is mentioned that the interannual variations in the sea level are related to river discharge of the Danube.
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References
Ayhan M E, Hekimoglu S, Demir C, Sanli U, Kahveci M(1994) Secular variation of mean sea level and vertical crustal motion using tide-gauge and GPS data, Proc. of 1 st Turkish International Symposium on Deformations, September 5–9, Istanbul, Turkey, 357–369
Becker M, Zerbini S, Kaker T, Burki B, Galanis J, Garate J, Georgiev I, Kotzev V, Lobasov V, Marson I, Negusini M, Richter B, Veis G, Yusefovich P (2001) Assessment of Height Variations by GPS at the Mediterranean and Black Sea Coast Tide Gauges from the SELF Project, Subm. to Global and Planetary Change
Beljashky T (1985) Investigation of the recent vertical earth movements along the Bulgarian Black Sea coast on the basis of tide gauge data and precise levelling measurements (in Bulgarian), Dissertation, S., 210 p
Douglas, B. C. (1992) Global sea level acceleration. J. Geophys. Res., 97:12,
Douglas, B. C. (1992) Global sea level acceleration. J. Geophys. Res., 2: 699–12706
Gorjachkin Yu, Ivanov V, Stepanjantz Yu (1998) Variations of sea level nortern part of the Black Sea coast, Mar. Hydroph.Issue, Sevastopol, 2: 23–29
IOC (1985) Manual on sea-level measurement and interpretation. Volume 1— Basic Procedures. Intergovernmental Oceanographic Commission, Manuals and Guides, N 14, IOC, Paris, 83 p
IOC (2000) Manual on sea-level measurement and interpretation. Volume 3- Reappraisals and Recommendations as of the year 2000, Intergovernmental Oceanographic Commission, Manuals and Guides, N 14, IOC, UNESCO, 46 p
Jenkins, G. M., D. G. Watts (1971). Spectrum analysis and its applications (in Russian), M., Vol.1 (1971), Vol. 2 (1972)
Lappo S S, Reva Yu A (1997) A comparative analysis of longterm variability of the Black and Caspian Sea Levels(in Russian), Meteorology and Hydrology, 12: 63–75
Malciu V, Diaconu V (1999) Long-term trend of the sea level at the Romanian littoral. http://www.pol.ac.uk/psmsl/gb/gb7/romania /psmsl/gb/gb7/romania
Mladenovsky N, Minchev P, Jivkov R, Dobrev D (1971) Geodetic stations, basis and poligons (in Bulgarian), Proc. of NIIGC, S, Vol. 4
Mungov G, Veselinov V, Korcheva A, Korchev G (1995) Investigation of the structure and the sea level variations’ prediction along the Black sea coast(in Bulgarian), Final report on the contract N 53/ 1991 with the National Science Fund, MEST, S., 230 p
Panayotov T, Lazarov K (1978) Mathematical description of the river outflow fluctuations by the summarized model of auto-regression and moving average(in Bulgarian), Hydrology and meteorology, S., 2: 25–32
Pashova L, Beljashky T (1998) Analysis of Varna and Bourgas tide gauges data for the period 1928–1996 (in Bulgarian), Ann. of the UACEG, S., Vol. XXXIX, 173–183
Pugh D (1987). Tides, Surges and Mean Sea-Level, John Wiley&Sons, Swindon, UK, 234 p
Russell G L, Gornitz V, Miller J R (2000) Regional sea-level changes projected by the NASA/G1SS Atmosphere-Ocean Model. Climate Dynamics, 16: 789–797
Sea level data for 1928–1996 (a). Station Varna (1997). Ministry of Regional Development and Construction, Research Institute of Geodesy and Photogrammetry, S., 79 p
Sea level data for 1928–1996 (b). Station Bourgas (1997). Ministry of Regional Development and Construction, Research Institute of Geodesy and Photogrammetry, S., 79 p
Woodworth P (1987). Trends in U.K. mean sea level, Marine Geodesy, Vol. 11, 57–87
Woppelman G, Adam J, Gurtner W, Harsson B, lhde J, Sacher M, Schluter W (2000) Status Report on sea-level data collection and analysis within the EUVN Project, http://www.evrs.Leipzig.ifag.sie
Zerbini S, H Plag, Tr Baker, M Becker, H Billiris, B Burki, H Kahle, I Marson, L Pezzoli, B Richter, C Romagnoli, M Sztobryn, P Tomasi, M Tsimplis, G Veis, G Verrone (1996). Sea level in the Mediterranean: a first step towards separating crustal movements and absolute sea-level variations, Global andl Pllanetary Change, 14, pp 1–48
Zyumbyuleva E (1974). Zubstantiation of the basic coastal maritime hydrological network of the People’s Republic of Bulgaria. Bull. ofthe Institute ofHydrology and Meteorology, BAS, Vol. XXIII, 124–146
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Pashova, L.G. (2002). Investigation of Sea Level Variations at Two Tide Gauges in Bulgaria. In: Ádám, J., Schwarz, KP. (eds) Vistas for Geodesy in the New Millennium. International Association of Geodesy Symposia, vol 125. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-04709-5_79
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DOI: https://doi.org/10.1007/978-3-662-04709-5_79
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