| Abstract: | A two-dimensional, depth-integrated, hydrodynamic/transport model of the Potomac Estuary between Indian Head and Morgantown, Md., has been extended to include treatment of baroclinic forcing due to horizontal density gradients. The finite-difference model numerically integrates equations of mass and momentum conservation in conjunction with a transport equation for heat, salt, and constituent fluxes. Lateral and longitudinal density gradients are determined from salinity distributions computed from the convection-diffusion equation and an equation of state that expresses density as a function of temperature and salinity; thus, the hydrodynamic and transport computations are directly coupled. Horizontal density variations are shown to contribute significantly to momentum fluxes determined in the hydrodynamic computation. These fluxes lead to enchanced tidal pumping, and consequently greater dispersion, as is evidenced by numerical simulations. Density gradient effects on tidal propagation and transport behavior are discussed and demonstrated. |
| Genre: | Conference Paper |
| ProdID: | 70015936 |
| Citation Author: | Schaffranek, Raymond, W.; Baltzer, Robert, A. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | Chang Howard H.Hill Joseph C. |
| Citation End Page: | 1256 |
| Citation Issue: | |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Hydraulic Engineering - Proceedings of the 1990 National Conference |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | 6 |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | Publ by ASCE |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Horizontal density-gradient effects on simulation of flow and transport in the Potomac Estuary; 1990; Conference Paper; Hydraulic Engineering - Proceedings of the 1990 National Conference; Schaffranek, Raymond, W.; Baltzer, Robert, A. |
| Citation Start Page: | 1251 |
| Citation Volume: | |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Horizontal density-gradient effects on simulation of flow and transport in the Potomac Estuary; 1990; Conference Paper; Hydraulic Engineering - Proceedings of the 1990 National Conference; Schaffranek, Raymond, W.; Baltzer, Robert, A. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1990 00:00 -0600 |
| Publisher: | Publ by ASCE |
