Characteristics of Long Period Waves by Field Observation and Statistical Analysis of It's Propagation in Harbor

Abstract

Long period waves sometimes cause the termination of cargo handling and break of mooring ropes in Tomakomai-port.Characteristics of long period waves in the port are discribed from the statistical analysis of field observation.The long period waves are mainly induced by the set-down waves bounded with grouping waves for the case of large wind waves. An occurrence probability table for long period waves is proposed by employing continuous observation data in the port.