Extreme Wave-height And Extreme Water-level Joint Designing Parameter Derivation

In this paper, through 1999-2009, all total 11 years ocean disaster bulletins, made a detailed description to the hazard losses and frequency about nearly 11 years storm surges. Through the real-measured data, the damage of ocean utility causing by storm surges is very serious, dire treating the lives and property of coastal people and making huge damage to seacoast utility, then, improving accuracy of storm surges disaster defense forecast is integrant.For wave height and water level are more intuitive and important to ocean utility, in this paper, considering the effect extreme wave height and extreme water level bring on ocean utility design parameters, recently, single factor analysis means are used continually in ocean utility designing criterion risk predictive analytics, such as: a-hundred-year return period wave height, fifty years return period water level, especially under the effect of storm surges, wave height and water level always arise at the same time; Mean while, traditional ocean data risk analysis methods need Artificial selection distribution curve, this brings some subjectivity obstruction to risk analysis.For traditional methods'subjectivity and don't consider the combined action ocean essential factor bring to ocean utility, setting up two-dimensional joint entropy model by deriving extreme wave height and water level joint distribution function under the two-dimensional joint maximum entropy principle, and applying the new model in extreme wave height and extreme water level joint new model has the merit of Minimum Interference and considers the relevance of wave height and water level which traditional models doesn't have, it is more adaptability in ocean utility designing parameter.