THE INTENSITY OF VARIATIONS OF THE KARA SEA LEVEL ON DIFFERENT TIME SCALES

E. A. Zakharchuk

Based on direct observations of the Kara Sea level from 20 coastal points the mean contributions of processes on different time scales (nontidal mesoscale oscillations, semidiurnal and diurnal tides, synoptic-scale oscillations, long-term tides, seasonal and long-term variations) to the total variance of sea level variations are estimated and maximum nontidal oscillations on different time scales are determined. It was found that synoptic-scale sea level variations prevailed at most points of the Kara Sea. Their mean contribution to the total variance ranges from 26 to 71%. Maximum variations reach 88 cm in the north of the sea, increasing up to 300 cm in Yenisei Bay. The most intensive synoptic-scale sea level variations are generated at intervals from 52 to 122 days and from 7 to 16 days.

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