Journal cover Journal topic
Ocean Science An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 2.289 IF 2.289
  • IF 5-year value: 2.756 IF 5-year 2.756
  • CiteScore value: 2.76 CiteScore 2.76
  • SNIP value: 1.050 SNIP 1.050
  • SJR value: 1.554 SJR 1.554
  • IPP value: 2.65 IPP 2.65
  • h5-index value: 30 h5-index 30
  • Scimago H index value: 41 Scimago H index 41
Discussion papers
https://doi.org/10.5194/os-2018-105
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-2018-105
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 23 Oct 2018

Research article | 23 Oct 2018

Review status
This discussion paper is a preprint. It is a manuscript under review for the journal Ocean Science (OS).

Use of a hydrodynamic model for the management of the water renovation in a coastal system

Pablo Cerralbo1,2, Marta F.-Pedrera Balsells1, Marc Mestres1,2, Margarita Fernandez3, Manuel Espino1,2, Manel Grifoll1, and Agustin Sanchez-Arcilla1,2 Pablo Cerralbo et al.
  • 1Maritime Engineering Laboratory Polytechnic University of Catalonia (LIM/UPC) , 08034 Barcelona, Spain
  • 2International Centre of Coastal Resources Research (CIIRC), 08034 Barcelona, Spain
  • 3Institute of Agriculture and Food Research and Technology (IRTA), Carretera del Poblenou Km 5.5, 43540 Sant Carles de la Ràpita, Spain

Abstract. In this contribution we investigate the hydrodynamic response in Alfacs Bay (Delta Ebro, NW Mediterranean Sea) to different anthropogenic modifications in freshwater flows and inner bay-open sea connections. The fresh water, coming from rice field irrigation, contains nutrients and pesticides and therefore affects in multiple ways the productivity and water quality of the bay. The application of a nested oceanographic circulation modelling suite within the bay provides objective information to solve water quality problems that are becoming more acute due to temperature and phytoplankton concentration peaks during the summer period, when sea water may exceed 28˚C leading high rates of mussels mortality and therefore a significant impact on the local economy. The effects of different management solutions (like a connection channel between the inner bay and open sea) are hydro-dynamically modelled in order to diminish residence times (e-flushing time) and water temperatures. The modelling system, based on the Regional Ocean Modelling System (ROMS), consists in a set of nested domains using data from CMEMS-IBI for the initial and open boundary conditions (coarser domain). One full year (2014) of simulation is used to validate the results showing low errors with SST and good agreement with surface currents. Finally, a set of twin numerical experiments during the summer period (when water temperature reaches 28˚C) are used to analyse the effects of proposed nature-based interventions. Although these actions modify water temperature in the water column, the decrease in SST is not high enough to avoid high temperatures during some days preventing eventual mussel mortality during summer in the shallowest regions. However, the proposed management actions reveal their effectiveness in diminishing water residence times along the entire bay, thus preventing the inner areas to have low renovation and the corresponding ecological problems.

Pablo Cerralbo et al.
Interactive discussion
Status: open (until 18 Dec 2018)
Status: open (until 18 Dec 2018)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
[Subscribe to comment alert] Printer-friendly Version - Printer-friendly version Supplement - Supplement
Pablo Cerralbo et al.
Pablo Cerralbo et al.
Viewed
Total article views: 207 (including HTML, PDF, and XML)
HTML PDF XML Total BibTeX EndNote
190 15 2 207 6 8
  • HTML: 190
  • PDF: 15
  • XML: 2
  • Total: 207
  • BibTeX: 6
  • EndNote: 8
Views and downloads (calculated since 23 Oct 2018)
Cumulative views and downloads (calculated since 23 Oct 2018)
Viewed (geographical distribution)
Total article views: 207 (including HTML, PDF, and XML) Thereof 207 with geography defined and 0 with unknown origin.
Country # Views %
  • 1
1
 
 
 
 
Cited
Saved
No saved metrics found.
Discussed
No discussed metrics found.
Latest update: 15 Nov 2018
Publications Copernicus
Special issue
Download
Short summary
In this contribution we investigate the hydrodynamic response in Alfacs Bay (Delta Ebro, NW Mediterranean Sea) to freshwater flows and inner bay-open sea connections. The numerical model ROMS is applied nested to Copernicus models, and validated with in-situ data. Considering the results only the modification of freshwater flows is recommended due to its lower impact on the environment and associated economic costs. None of the proposed solutions solve the problem related to warm waters.
In this contribution we investigate the hydrodynamic response in Alfacs Bay (Delta Ebro, NW...
Citation
Share