Climate changes and global warming are assumed for main reasons of constant sea level rise. Survey methods such as altimetric measurements are essential for determining global processes related to sea level change, but the regional and local changes are also important. In this paper regional sea level changes at tide gauge station Varna at Black sea coast is analyzed. Single spectrum analysis is carried out for monthly sea level data for period 1929–2019. The sea level trend, long term tidal constituents, amplitudes and phases are estimated. The results clearly indicates positive mean sea level trend with value of 1.2 ±0.1mm/yr.


Article metrics loading...

Loading full text...

Full text loading...


  1. GolyandinaN., NekrutkinV., and ZhigljavskyA.
    (2001). Analysis of Time Series Structure: SSA and Related Techniques. London: Chapman & Hall/CRC,. 305 p.
    [Google Scholar]
  2. Golyandina, N., Osipov, E.
    The “Caterpillar”-SSA method for analysis of time series with missing values. Journal of Statistical Planning and Inference13. 2007, pp 2642 – 2653p.
    [Google Scholar]

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error