engleski

Monitoring sea level in Croatia

The eastern Adriatic coast is the part of the Mediterranean most densely covered with long, continuous, high-quality sea-level observations. Systematic sea-level measurements in Croatia were started in December 1929, when Geophysical Institute installed a tide gauge in Bakar. It has been operating ever since, except for a break around the Second World War, providing an uninterrupted record since 1949. The backbone of Croatian tide-gauge network was formed around 1950s, when four new float-operated tide gauges were installed along the coast: at Split (Harbour, in 1947 and Marjan, in 1952), Dubrovnik (1954) and Rovinj (1955), and they have been continuously operating in the entire period, except at Dubrovnik, where the measurements had to cease for 3 months in the winter of 1991/1992, during the period of the heaviest shelling. The tide-gauge network was modernized in 2003 when all the stations were upgraded with analog/digital converters and GSM (Global System for Mobile Communications) modems for near-real time acquisition of data. A new technology in sea-level measurements was introduced in the Adriatic in 2004, with the installation of a radar tide-gauge at Bakar. In the same year a CGPS (Continuous Global Positioning System) antenna was installed at the tide-gauge in Split, which enabled the measurement of absolute sea-level displacements. Long, high-quality time series of tide-gauge measurements provide a valuable basis for the study of mean sea-level changes and climate fluctuations. On the other hand, the installation of digital instruments enabled a close study of high-frequency phenomena (e.g., storm surges, abiki/meteotsunamis) which sometimes cause great damages to the coastal area.

sea level; Bakar; tide gauge

nije evidentirano