Sea extremes (annual maximum sea levels significant wave heights over a certain threshold etc) will be modelled with a temporal trend and they may be also governed by the climate factors e.g. Southern Oscillation Index (SOI). The fitting becomes better in general when any explanatory variable is added in the regression model. The sensitivity for the residuals should be examined to avoid the over-fitting. The outliers detection for extreme values can be firstly discussed by the degree of experience which we proposed in the previous study. It will conduct to the robustness of estimation. The judgements for the removal of outliers are demonstrated in a diagram of leverage and residual of extremes.
PROCEEDINGS OF COASTAL ENGINEERING, JSCE
PROCEEDINGS OF THE JAPANESE CONFERENCE ON COASTAL ENGINEERING