HEADING PAGE - port of ploce authority * welcome

ENVIRONMENTAL IMPACT STUDY
Rn: 03-033 CONTAINER TERMINAL PLOCE PAGE: 18
What figure 15 distinctly shows are measured fluctuations of sea levels at the
occurrence of port standing waves in the period of three days which is the
result of the topography of the entire bay of the port of Ploèe and
unhomogeneous activities of atmospheric pressure disturbances. According to
this it can be estimated that the period of standing waves in the port of Ploèe
is about thirty minutes, which is far above own frequencies of all motions of
any vessels which will move or be berthed to the quay (7) and there is no
danger of resonant effects.
Sea currents
Sea currents, along with the changes in sea level or as their consequence,
are an important cause of sea dynamics which causes cleaning, bringing or
distribution of various types of pollutants on one side and the spatial sea
change which affects flora and fauna of a particular aquatorium, on the other
side.
The investor has provided data based on measurements of Hydrographic
Institute about basic directions of sea currents in the aquatorium between the
Pelješac peninsula and the mainland, consequently in the neighbourhood of
the project for Quay 7 of the port of Ploèe.
Figure 16 shows the basic directions of surface currents in the Neretva
channel during winter and spring. They are qualitative for the whole year,
because it is evident that the surface currents in the wider neighbourhood of
the project are under the impact of the Neretva river confluence. More detailed
and quantified these surface currents are shown in the sea aquatorium in front
of the project in figure 17 where it can be seen that surface currents in the
immediate neighbourhood of the project are significant and amount to about
25 cm/s (about 0.9 km/h). This can be attributed to the circulation from the
Neretva, Vlaška channel and the bay of the port of Ploèe itself.
RIJEKAPROJEKT d.o.o.