TY - GEN
T1 - CASE STUDIES OF DELAWARE'S TIDAL INLETS
T2 - 16th International Conference on Coastal Engineering 1978
AU - Dennis, W. A.
AU - Lanan, G. A.
AU - Dalrymple, R. A.
N1 - Publisher Copyright:
© 1978 American Society of Civil Engineers (ASCE). All rights reserved.
PY - 1978
Y1 - 1978
N2 - Studies were undertaken to document the past and present characteristics and trends of Delaware's two major tidal inlets, Roosevelt and Indian River Inlets. It was found that both inlet complexes are effective sediment traps causing considerable downdrift erosion. The major mechanism by which sand enters Indian River Inlet is by overtopping the impounded south jetty. At Roosevelt Inlet sediments are readily transported past the severed steel sheet pile jetties. The results of a one-dimensional hydraulic model, as well as field measurements, predict the presence of a mean southerly flow through the canal and bay system which connects these two inlets. This flow is shown to have a substantial effect on the behavior and stability of these entranceways, causing major assymmetries on the depositional patterns at each location. Roosevelt Inlet was found to have a strong tendency to trap sediment within its throat; whereas, Indian River Inlet, on the opposite end of the system, was found to retain large quantities of sand on its developing ebb tidal shoal.
AB - Studies were undertaken to document the past and present characteristics and trends of Delaware's two major tidal inlets, Roosevelt and Indian River Inlets. It was found that both inlet complexes are effective sediment traps causing considerable downdrift erosion. The major mechanism by which sand enters Indian River Inlet is by overtopping the impounded south jetty. At Roosevelt Inlet sediments are readily transported past the severed steel sheet pile jetties. The results of a one-dimensional hydraulic model, as well as field measurements, predict the presence of a mean southerly flow through the canal and bay system which connects these two inlets. This flow is shown to have a substantial effect on the behavior and stability of these entranceways, causing major assymmetries on the depositional patterns at each location. Roosevelt Inlet was found to have a strong tendency to trap sediment within its throat; whereas, Indian River Inlet, on the opposite end of the system, was found to retain large quantities of sand on its developing ebb tidal shoal.
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U2 - 10.1061/9780872621909.077
DO - 10.1061/9780872621909.077
M3 - Conference contribution
AN - SCOPUS:85187780408
T3 - Proceedings of the Coastal Engineering Conference
SP - 1282
EP - 1301
BT - Proceedings of the 16th Coastal Engineering Conference 1978
PB - American Society of Civil Engineers (ASCE)
Y2 - 27 August 1978 through 3 September 1978
ER -