Hydrographic Measurements in the Strait of Gibraltar, June 1986

Abstract : The data from this June 1986 hydrographic survey form part of a broad study of the dynamics and kinematics of the Strait of Gibraltar. The station plan was chosen to resolve the hydrographic structure within the strait and approaches, as well as the variably induced by the semidiurnal and diurnal tides. To resolve small differences in water mass properties within the Mediterranean Water, all stations extended within 10 m of the bottom. Vertical profiles and temperature-salinity correlations are given for each of the 319 casts obtained during the period 17-29 June 1986. The details of the salinity calibration are discussed. The profile show many small-scale (several meters) features, including density inversions, for stations taken near the sill. The time series stations show the large-amplitude internal tide with both semidiurnal and diurnal periodicity. Keywords: Ocean tides; Diurnal variations; Oceanographic data; Sea water temperature; Salinity; Sills(Ocean Bottom Topography).