Kings Bay Coastal Processes Numerical Model.
Abstract
St. Mary's Inlet is the main ocean entrance to the Naval Submarine Base, Kings Bay, Georgia. In order to accomodate Trident submarines at the base, it became necessary to modify the exterior navigation channel. This report describes details of a numerical modeling effort performed to study the effect of channel modifications on coastal processes near the inlet, especially channel shoaling rates. A system of numerical models, which included models for tides, waves, wave-induced currents, and noncohesive sediment (sand) transport, was used in the study. The system, together with two computational grids, was called Model B. It was used to study existing (base) as well as planned conditions. Plan 1 is to widen the navigation channel by 100 ft, deepen the channel to -49 ft mlw (46-ft project depth plus 3-ft advance maintenance), and extend the channel on the ocean side with a 20-deg bend to the south. Model B considered the simultaneous sand-tightening of a 1,000-ft segment of the south jetty. While all four models were run for base conditions, only the tidal model and the sediment transport model were run for Plan 1 conditions to meet the urgent need for model results. Based on the model results and available information, recommendations on advance maintenance dredging are made for various reaches of the navigation channel.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1988
- Accession Number
- ADA194389
Entities
People
- Norman W. Scheffner
- S. R. Vemulakonda
Organizations
- Coastal Engineering Research Center