ON THE OCCURRENCE OF ABNORMAL STORMS AND ITS IMPLICATIONS ON DESIGN PARAMETERS (STATISTICAL ANALYSIS OF STORMS)

The assessment of design parameters has a fundamental importance for port planning and design of coastal structures. Special emphasis has to be put on the importance of the occurrence of abnormal storms. The authors' experience from investigations of port projects has revealed that on many sites it is storms with unusual tracks or otherwise unusual behaviour that are determinant for the design events. This experience is documented by two case stories. The importance of unusual weather systems is discussed and statistical methods for investigation of such phenomena are discussed.