Author(s): Jose Carlos Santas Lopez; Maria Jesus Soldevilla; Cristina Benito Guinea

Linked Author(s): José Carlos Santás López

Keywords: No Keywords

Abstract: The movement of ships docked within a harbour can be dangerous for the ships,as well as for the wharfand the mooring(1).These oscillations are provoked by various causes.One of these causes,perhaps the mostsignificant for big ships,is the existence of Surf-Beat,which affects the basin in question and which is amplifiedby the response of the basin itself if the surf-beat period is near the resonance period. The presence of surf-beat in the period intervals,40s.to 400s.,has been proven.The surf-beat can begenerated from the incident waves in various ways(3).One of the mechanisms(4)involves the releasing of aFree Long Wave,FLW,when a Bounded Long Wave,BLW,strikes a beach. The amplitude of the oscillation has a correlation with the amplification of the basin itself and,consequently,with the harbour geometry.It also has a correlation with the amplitude and the period of the surf-beat,which,in turn,is a function of deep water waves(5).The quantifying of dangerous oscillation in terms ofperiod and amplitude and its relation with the parameters of the inciden waves enables one to predict dangeroussituations and thus reduce damage.

DOI:

Year: 1993