Homogeneity aspects in statisticl analysis of coastal engineerign data

摘要

In this paper, the problem of (in)homogeneous data in coastal engineerign applications is studied. Statistical analysis of coastal engineerign data such as flood data, wind data, wave height data, etc., is essentially a problem of information scarcity. Records are usually too short to ensure relable estimates of lowexceedance probability quanties in many practical problems. Determination of quantiles is needed for the desing, construction and operation of hydraulic structures, insurance studies and protection of populated areas. To perform a frequency analysis of data from coastal engineering practice, the data first has to be tested for homogeneity. Non-homogeneous data may lead to wrong quantiles. A homogeneity test must be able to separate data sets that do not come from the same distribution. In this paper statistical and physical-based homogeneity tests will be presented.