Berm Recession of the Icelandic-type Berm Breakwater

The purpose of this paper is to analyse the recession of the Icelandic-type berm breakwater. This limits the interest from the whole profile in dynamic structures, like reshaping berm breakwaters or single beaches, to the start of and early stages of reshaping. A large part of the PIANC (2003) recession data is found to be irrelevant to the Icelandic-type berm breakwaters. Design specifications for the Icelandic-type berm breakwater with respect to the berm are outlined. Requirements for the type of data needed are defined and three data sets are identified. A new formula for the recession of the Icelandic-type berm breakwater is presented, where the recession is a function of HoTop with much less scatter than the earlier formula