Print Email Facebook Twitter An assessment of transport timescales and return coefficient in adjacent tropical estuaries Title An assessment of transport timescales and return coefficient in adjacent tropical estuaries Author Andutta, Fernando P. (Griffith University; Universidade de São Paulo) Helfer, Fernanda (Griffith University) de Miranda, Luiz Bruner (Universidade de São Paulo) Deleersnijder, E.L.C. (TU Delft Mathematical Physics; Université Catholique de Louvain) Thomas, Christopher (Université Catholique de Louvain) Lemckert, Charles (Griffith University) Date 2016 Abstract Transport timescales (TTS), namely residence time and exposure time, were computed for adjacent shallow meso-tidal tropical estuarines system using the Lagrangian model D-Waq Part coupled with the hydrodynamic model Delft3D-Flow, and the Constituent-oriented Age and Residence time Theory, CART. The main results are threefold: (a) The TTS differs more between releases at high or low tide than between those at spring and neap tides. The exposure time was also calculated and found to be larger than the residence time by a few days. (b) The exposure and residence times were used to evaluate the return coefficient (r) for different scenarios. As with residence and exposure times, the return coefficient was found to differ more between releases at high or low tide than between those at spring and neap tides. (c) For the Caravelas Estuary, where the river inflow was low (~4 m3 s-1), the residence time was found to be much larger than for the Peruípe Estuary, where the river discharge was greater and nearly constant during the sampling period (~20 m3 s-1). These results shows the importance of advection in decreasing TTS in the Peruípe Estuary compared to the Caravelas Estuary. The influence of the advection and dispersion agrees with previous simple estimates obtained using the newly modified Land Ocean Interaction Coastal Zone (LOICZ) model by Andutta et al. (2014). Subject Exposure timeHydrodynamicsNumerical modelResidence timeReturn coefficientTropical estuary To reference this document use: http://resolver.tudelft.nl/uuid:d69ec3aa-5d15-498f-ba5b-cba3f492b227 DOI https://doi.org/10.1016/j.csr.2016.05.006 Embargo date 2018-05-26 ISSN 0278-4343 Source Continental Shelf Research, 124, 49-62 Bibliographical note Accepted author manuscript Part of collection Institutional Repository Document type journal article Rights © 2016 Fernando P. Andutta, Fernanda Helfer, Luiz Bruner de Miranda, E.L.C. Deleersnijder, Christopher Thomas, Charles Lemckert Files PDF AnduttaEtAl_CSR_Accepted.pdf 1.69 MB Close viewer /islandora/object/uuid:d69ec3aa-5d15-498f-ba5b-cba3f492b227/datastream/OBJ/view