Extreme Sea Level Estimation Combining Systematic Observed Skew Surges and Historical Record Sea Levels

The estimation of sea levels corresponding to high return periods is crucial for coastal planning and the design defenses. This paper deals with use historical observations, that is, events occurred before beginning systematic tide gauge recordings, improve levels. Most recent publications dealing statistical analyses applied suggest astronomical skew surges should be analyzed modeled separately. Historical samples generally consist observed record Some extreme can easily remain unnoticed if they occur at low or moderate tides do not generate exhaustiveness surge series, which an essential criterion unbiased inference, therefore guaranteed. study proposes a model combining, in single Bayesian inference procedure, information two different natures calibration distribution surges: measured period period. A data-based comparison proposed previously published approaches presented based on large number Monte Carlo simulations. four locations French Atlantic Channel coasts. Results indicate more reliable accurate than methods aim integration records level analyses.