FLUORESCENT DYE MEASUREMENTS OF THE MIXING AND TRANSPORT OF WASTE-WATER DISCHARGE IN THE BOSPORUS

The performance of the wastewater discharge of Istanbul is evaluated b ased on fluorescent dye technique, supported by hydrographic and curre nt measurements. Under the normal exchange flows, as well as during ex treme events of blocking, the dye essentially remained confined in the lower layer. The maximum upper layer average dye concentration in the Bosphorus was close to the background levels, while the interfacial l ayer values were larger. Good agreement is found between the observati ons and simple models of longitudinal dispersion in the lower layer of the Bosphorus.