T. Drago et al., SOME EVIDENCES OF NORTHWARD FINE SEDIMENT TRANSPORT IN THE NORTHERN PORTUGUESE CONTINENTAL-SHELF, Oceanologica acta, 21(2), 1998, pp. 223-231
On the basis of sedimentological and oceanographical data, a transport
scheme for fine-grained material is proposed in order to explain the
location of a muddy deposit present in the northern Portuguese contine
ntal shelf, north-west off the Douro River mouth. This mid-shelf depos
it is recent, active and its main source is apparently the Douro River
. The sediment supply can be related with the oceanographic conditions
in winter regime, characterised by a poleward along shelf current wit
h a bottom westward component, as a consequence of a south-west wind.
The resulting fine sediment transport, essentially made in the bottom
nepheloid layer is believed to have a north-west direction. (C) Elsevi
er, Paris.