Τίτλος:
Grain-Size Trend Analysis for the Determination of Non-Biogenic Sediment
Transport Pathways on the Kwinte Bank (southern North Sea), in Relation
to Sand Dredging
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
Grain size trend analysis is applied to the determination of sediment
transport pathways over the Kwinte Bank southern North Sea which had
been subjected to intensive dredging within the context of the
environmental impact of dredging activities On the basis of the results
of grain size trend analysis focused mainly upon the transportation of
the non biogenic sedimentary material (<2 mm) it appears that (1) there
is a main sediment pathway over the western (bank crest) and central
(dredged area) part of the bank directed toward the NE whilst a
secondary pathway is established over its eastern gently sloping flank h
wing a SE direction Further the present analysis shows that the area of
the central (dredged) depression acts more as a by passing zone rather
than as a depo-centre for the non biogenic sediments Comparison
undertaken with the results of an earlier investigation for a
non-dredged area at the northern end of the same bank reveals that the
depression due to dredging modifies significantly the sediment transport
pathways this may be attributed to a change in the seabed morphology
which in turn modifies the near bed hydrodynamics (related to tide
and/or storm events)
Συγγραφείς:
Poulos, Serafim E.
Ballay, Arnaud
Περιοδικό:
Journal of Coastal Research
Εκδότης:
Coastal Education Research Foundation Inc
Λέξεις-κλειδιά:
linear sandbank; dredging effects; grain size trend analysts; southern
North Sea
