Kings Bay, Cumberland Sound, Georgia part II : numerical modeling
Kings Bay, Cumberland Sound, Georgia part II : numerical modeling
Date
1987-03
Authors
Aubrey, David G.
Fry, Virginia A.
Lynch, Daniel R.
Fry, Virginia A.
Lynch, Daniel R.
Linked Authors
Files
Alternative Title
Citable URI
As Published
Date Created
Location
Kings Bay, Cumberland Sound, Georgia
DOI
10.1575/1912/7556
Related Materials
Replaces
Replaced By
Keywords
Estuarine oceanography
Mathematical models
Mathematical models
Abstract
As a complement to field measurements of waves, surface tides, currents, and sediment transport,
numerical modeling of King's Bay/ Cumberland Sound was initiated. Diagnostic numerical models 1 (both 1- and 2-dimensional) were applied to determine their applicability to estuaries of the same
scale as King's Bay. One-dimensional models showed the estuarine system to be ebb-dominant,
in accord with observations. This model did not reveal any extreme system sensitivity to changes
in channel geometry on the scale expected from maintenance dredging. The two-dimensional
model (a finite element model having a moving boundary formulation) was run to examine its applicability
for diagnostic modeling of these systems. Preliminary results indicate the method is
promising, but some model developments are indicated. Suggested model developments include:
semi-implicit algorithm to reduce run-time: mass-conserving boundary conditions at tidal boundaries:
implementation of a two-level momentum equation: algorithm development to extend the
deforming element concept for smaller estuarine space scales: and formulation of a comprehensive
interactive graphical package to facilitate model formulation, boundary and domain gridding,
and presentation of results. This latter graphical task is essential for successful application of
these numerical models. Results from these studies suggest that diagnostic models of shallow
estuaries will be a valuable tool to be used in conjunction with more expensive "predictive" models,
to understand circulation and transport processes under natural and impacted conditions.
Description
Embargo Date
Citation
Aubrey, D. G., Fry, V. A., & Lynch, D. R. (1987). Kings Bay, Cumberland Sound, Georgia part II: numerical modeling. Woods Hole Oceanographic Institution. https://doi.org/10.1575/1912/7556