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Publications
Hidalgo, O.S., Nieto Borge, J.C., Cunha, C. and Guedes Soares, C. (1995), “Filling Missing Observations in Time Series of Significant Wave Height", Proceedings of the 14th International Conference on Offshore Mechanics and Arctic Engineering (OMAE’95), Guedes Soares, C. (Ed.), ASME, New York, Vol. II, pp. 9-17
Missing values are frequently encountered in time series of wave measurements and this presents difficulties in the continuos application of autoregressive models to the series. In this paper, the use of autoregressive models to describe the time series of significant wave height is described and different methods are presented to fill missing values in the series. For small gaps it is possible to forecast from models adjusted to partial series, but for large gaps a method is proposed to account for spatial correlation of the data. Application examples are provided for the time series of Figueira da Foz in Portugal and its correlation with data from Sines in Portugal and La Coruña in Spain.
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