Variability of Salinity in Pará River Estuary: 2D Analysis with Flexible Mesh Model

• DOI: 10.2112/si75-026.1
• Publication Date: 2016-08-22T14:39:29Z
• Authors: Renan P. Rosário; Thaís A.C. Borba; Arthur S. Santos; Marcelo Rollnic
• Keywords: Discharge; River regime; Saltwater intrusion

Rosário, R.P., Borba, T.A.C., Santos, A.S., and Rollnic, M., 2016. Variability of Salinity in Pará River Estuary: 2D Analysis with Flexible Mesh Model. In: Vila-Concejo, A.; Bruce, E.; Kennedy, D.M., McCarroll, R.J. (eds.), Proceedings the 14th International Coastal Symposium (Sydney, Australia). Journal Research, Special Issue, No. 75, pp. 128–132. Coconut Creek (Florida), ISSN 0749-0208.This research aims to study spatial temporal variability salinity Estuary. The estuary is among largest Brazil, a mouth approximately 60 km wide. not true river because it does have spring, but hydrographic mesh that receives outflow several water bodies. There an ingestion salt Estuary, different what occurs within Amazon River, leads estuarine characteristics onto continental shelf. model was implemented based on flexible area basin for one-year simulation. software D-Flow FM used perform hydrodynamic and, D3D-D-Waq quality model. These experiments support conceptual description haline dynamics this system produce information regarding scenarios region. Fieldworks were made (25h - three points estuary) low, high, transitional rivers discharge order evaluate performance. main conclusions are: numerical modeling showed upstream saline intrusion about 130 dry period (October December) 70 rainy (January May). barotropic condition shows as most important force control variation due reduction freshwater flow system.