 |
| Titel |
Improving the parameterisation of horizontal density gradient in one-dimensional water column models for estuarine circulation |
| VerfasserIn |
S. Blaise, E. Deleersnijder |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1812-0784
|
| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 4, no. 4 ; Nr. 4, no. 4 (2008-11-19), S.239-246 |
| Datensatznummer |
250001888
|
| Publikation (Nr.) |
 copernicus.org/os-4-239-2008.pdf |
|
|
|
|
|
| Zusammenfassung |
| A new parameterisation of horizontal density gradient for a one-dimensional
water column estuarine model, inspired by the first-order finite-difference
upwind scheme, is presented. This parameterisation prevents stratification
from growing indefinitely, a deficiency usually referred to as "runaway
stratification". It is seen that, using this upwind-like parameterisation,
the salinity must remain comprised between upper and lower bounds set a
priori and that any initial over- or under-shooting is progressively
eliminated. Simulations of idealised and realistic estuarine regimes indicate
that the new parameterisation lead to results that are devoid of the runaway
stratification phenomenon, as opposed to previously used models. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|