Back to Search
Start Over
Spatial patterns in coastal lagoons related to the hydrodynamics of seawater intrusion.
- Source :
- Marine Pollution Bulletin; Jun2017, Vol. 119 Issue 1, p132-144, 13p
- Publication Year :
- 2017
-
Abstract
- Marine intrusion was simulated in a choked and in a restricted coastal lagoon by using a 3D-hydrodynamic model. To study the spatiotemporal progression of seawater intrusion and its mixing efficiency with lagoon waters we define Marine Mixed Volume (V MM ) as a new hydrodynamic indicator. Spatial patterns in both lagoons were described by studying the time series and maps of V MM taking into account the meteorological conditions encountered during a water year. The patterns comprised well-mixed zones (WMZ) and physical barrier zones (PBZ) that act as hydrodynamic boundaries. The choked Bages-Sigean lagoon comprises four sub-basins: a PBZ at the inlet, and two WMZ's separated by another PBZ corresponding to a constriction zone. The volumes of the PBZ were 2.1 and 5.4 millions m 3 with characteristic mixing timescale of 68 and 84 days, respectively. The WMZ were 12.3 and 43.3 millions m 3 with characteristics mixing timescale of 70 and 39 days, respectively. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 0025326X
- Volume :
- 119
- Issue :
- 1
- Database :
- Supplemental Index
- Journal :
- Marine Pollution Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 123269520
- Full Text :
- https://doi.org/10.1016/j.marpolbul.2017.03.006