Abstract

A hydrographic survey, comprising 85 stations with measurements of temperature, salinity and turbidity, was performed in the semi-enclosed margin of the Sporades Basin (northwestern Aegean Sea) in June 1987. The data have been used to investigate the shelf-slope suspended matter exchanges in relation to the hydrology. The circulation, derived from hydrographic data, produces complex eddy patterns. The suspended matter distribution, determined from light scattering measurements, indicate a relationship between the suspended matter and the density-related flow field. Transport of suspended matter, supplied by rivers, is traced through the bottom nepheloid layer, mostly over the inner shelf and along the western coastline. There is however some evidence of transfer of suspended matter from the shelf towards the upper slope. The mid-depth nepheloid layer along the slope is thought to relate to advection of terrigenous material by topographically-controlled currents, and its seaward extension is inhibited by a strong anticyclonic circulation in the deep basin.

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