TY - GEN

T1 - Measuring tidal hydrodynamics and bedform evolution in the Dee estuary

AU - Bolaños, Rudolfo

AU - Souza, A.J.

AU - Bell, Paul

AU - Malarkey, Jonathan

PY - 2009

Y1 - 2009

N2 - Bed features have an important effect on frictional characteristics and turbulence in the flow and have a direct effect on sediment transport. Observations of hydrodynamics and bedform evolution are presented at 2 locations in the Dee estuary. Hydrodynamics and turbulence are controlled by tides which has a range of about 10 m. Some wave events were mainly recorded at the western location because of a higher exposure to western waves. In the Hilbre channel (STABLEIII tripod), the bed evolution is dominated by scour under the frame and ripple formation is not evident. This could be also attributed to the high concentration of cohesive material and large tidal velocities. In the Welsh channel, velocities were lower and no evidence of scour was found.

AB - Bed features have an important effect on frictional characteristics and turbulence in the flow and have a direct effect on sediment transport. Observations of hydrodynamics and bedform evolution are presented at 2 locations in the Dee estuary. Hydrodynamics and turbulence are controlled by tides which has a range of about 10 m. Some wave events were mainly recorded at the western location because of a higher exposure to western waves. In the Hilbre channel (STABLEIII tripod), the bed evolution is dominated by scour under the frame and ripple formation is not evident. This could be also attributed to the high concentration of cohesive material and large tidal velocities. In the Welsh channel, velocities were lower and no evidence of scour was found.

M3 - Conference contribution

VL - 2

SP - 709

EP - 714

BT - Proceedings of the 6th Symposium on River, Coastal and Estuarine Morphodynamics (RCEM 2009)

PB - CRC Press/Balkema

ER -