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首页> 外文期刊>Marine geodesy >Effects of Offsets and Outliers on the Sea Level Trend at Antalya 2 Tide Gauge within the Eastern Mediterranean Sea
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Effects of Offsets and Outliers on the Sea Level Trend at Antalya 2 Tide Gauge within the Eastern Mediterranean Sea

机译：Effects of Offsets and Outliers on the Sea Level Trend at Antalya 2 Tide Gauge within the Eastern Mediterranean Sea

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Abstract Antalya 2 tide gauge (TG) station is located on the coast of Turkey within the Eastern Mediterranean Sea. Relative sea level trends 6.0?±?1.5 and 6.44?±?0.45?mm/year over 1985–2009 at Antalya 2 TG are different from the trend (1.6?±?1.5?mm/year over 1935–1977) at Antalya TG within 10?km. In order to investigate this trend discrepancy, the monthly mean series at Antalya 2 TG is re-analyzed for offsets, outliers and trend estimation. The Zivot-Andrews method and the outlier test result in one offset at 1994.0417?year with magnitude of 71.24?±?13.48?mm and nine outliers. The series, corrected for the offset and outliers, de-seasonalized and filled for missed points, is identified as trend-stationary process and analyzed for trend estimation by various models. The optimal model providing the lowest Akaike Information Criteria is polynomial linear trend with multiplicative seasonal Autoregressive Moving Average (ARMA(2,0)x(1,0)12). The estimated relative sea level trend by the optimal model is 1.77?±?0.65?mm/year. The large trend discrepancy at Antalya 2 TG is accounted for by one offset primarily (～71%) and nine outliers (～3%).

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