S. Hossain et al., Suspended sediment transport dynamics in the sub-tropical micro-tidal Richmond River estuary, Australia, EST COAST S, 52(5), 2001, pp. 529-541
Suspended sediment transport and sedimentation dynamics in the sub-tropical
Richmond River estuary were investigated between July 1994 and June 1996.
During low flow months the estuary received net sediment inputs from the co
ntinental shelf; during high flow the estuary exported sediment to the cont
inental shelf depending on the magnitude of floods. Flow-weighted sampling
along with a one-dimensional unsteady flow hydrodynamic model of the estuar
y estimated that about fifty percent of the flood-borne suspended sediment
was transported through the estuary to the continental shelf during two min
or floods (with a 2-year return period), whereas, one hundred percent of th
e flood-borne sediment was transported to the continental shelf during a mo
derate flood (with a 5-year return period). Marker horizons confirmed a net
accumulation of sediment in the Richmond River estuary at the salt-fresh w
ater interface during all post flood recovery stages. (C) 2001 Academic Pre
ss.