Spatio-temporal variations of ‎wave fields in the Gulf of Finland ‎

Soomere T., Zaitseva-Pärnaste I., Räämet A., Kurennoy D.

We analyse the main properties of wave fields in the Gulf of Finland and their spatial and long-term varia-‎tions based on visual wave observations performed since 1954 at two locations on the southern coast of the ‎gulf and high-resolution simulations of wave fields for the entire Baltic Sea for 1970-2007. Shown is that both ‎long-term average and maximum wave heights in the gulf are about a half for those in the Baltic Proper. The ‎average wave heights have insignificantly changed in the gulf since the 1970s whereas the extreme wave ‎heights have considerably increased in the northern and in the northeastern sections of the gulf. A probable ‎reason for the changes is the enhancement of south-western winds over the last 40 years.

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