EN
The analysis of thermohaline conditions in the Gdansk Basin in the period 1989-1993 is presented against the background of long-term changes.The assessment is based on daily measurements of temperature and salinity at shore stations (Gdynia, Hel, Wladyslawowo) and the results from observations during monthly research cruises.The most characteristic feature of this period was deep stagnetion from 1979 onwards, with declining tendencies in salinity and density reported in all layers of the water column; the negative trend in water temperature was retarded, however, in January and December 1993 and March 1994 substantial inflows of saline water from the North Sea caused a temporary increase in salinity in the Gdansk Basin, at the same time raising and strengthening the halocine.