Estimation of tidal constituents from sea level registrations in BAB "St. Kliment Ohridski", Livingston Island

Abstract

The report presents the first results of the tidal analysis from sea level records obtained from TG installed in the aquatory of the Bulgarian Antarctic base "St. Kliment Ohridski” (BAB) on Livingston Island, Antarctica. Sea level data are available from two Antarctic Expeditions, 26-st during 2017/2018 with more than 83-daily 15-minutes records and 28-th in the period January-December 2019. The tides in the aquatory of the BAB vary in the range of 2.4 m, and about 30 tidal constituents are determined to be significant using UTide software. The obtained results show that tides are mixed with semi-diurnal behaviour and a daily inequality between high and low waters. Comparisons have been made with the results of tidal regime analyzes from other studies for the Livingston Island area. The planned geodetic research activities in the area of BAB are briefly described.