插值理论及其在海啸潮汐问题中的应用

Interpolation theory and its application in tsunami tide problemsAbstract Due to the continuous development of science and technology,the tidal powergeneration function provides the power and potential for human development.Not only the use ofelectricity is satisfied,but also the use of non-renewable energy can be reduced such as the fossilfuel,which plays an important role in environmental protection.However,the most importantproblem is to develop new environmental protection power plants.Although the developmentprospect of tidal energy is very broad,but in China,the development amount of tidal energy is lessthan 1%0,so this is an urgent problem to be solved in China.According to the main tidal components of the observation points under the stars,the leastsquare method and Chebyshev polynomial method are used to solve the tidal harmonic constantsof the observation points under the stars,and the relevant data of the main tidal components areobtained.However,the error of the harmonic constants obtained at this time is large,so theamplitude and the late angle are re interpolated and fitted by the cubic spline fitting function andKriging interpolation method,and the results are drawn.Then we get the synoptic chart.Based on the interpolation theory,this paper studies how to extract the harmonic constants oftides,how to use cubic spline interpolation and Kriging difference to draw the same tide map onthe tide station data matlab.In the process of describing the characteristics of tidal current,theacquisition of tidal harmonic constant is an important scientific research,which has a direct impacton the drawing of ocean tide chart.The drawing of the tide chart can help people to grasp theamplitude and the law of the tide distribution,and provide information reference for all-roundocean development and utilization.KEY WORDS Tidal harmonic constant,Cubic spline interpolation,Chebyshev polynomialinterpolation,Kriging interpolation