Effects of Tidal Range Variability and Local Morphology on Hydrodynamic Behavior and Salinity Structure in the Caeté River Estuary, North Brazil
Joint Authors
Kjerfve, Björn
Cavalcante, Geórgenes H.
Feary, David A.
Source
International Journal of Oceanography
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-09-08
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Earth Science , Water and Environment
History and Geography
Science
Abstract EN
Tidal influence and local morphology on circulation and salt transport are investigated in the Caeté river estuary, a well-mixed estuary along the north coast of Brazil.
Velocity, temperature, and salinity data were collected in three different locations along the estuary’s main channel, over three single, 13 h tidal cycles.
The aim of this study was to investigate the relationship between tidal distortion and salinity by using classical methods of comparison of three cross-channel circulation characteristics, as well as computation of salt flux and vertical mixing.
Findings indicate a flood-ebb asymmetry in currents, due to the distinct funneling morphology of the estuary, with shallow marginal areas being dominant towards the estuary head, while both stratification and shear dominate near the estuary mouth.
The tidal currents enhanced vertical diffusion in the mid- and lower reaches, explaining the prevailing weakly stratified conditions, while the dominant well-mixed conditions in the upper estuary are a result of a combination of stronger flood currents and negligible vertical saline gradient.
The predominant downstream salt transport supports the conclusion that there is little accumulation of salt in the Caeté river estuary.
In addition, findings indicate that tidal correlation and Stokes drift are important components in the upper estuary, while tidal correlation played an important role in the middle estuary, with fluvial discharge most important in the lower estuary.
American Psychological Association (APA)
Cavalcante, Geórgenes H.& Feary, David A.& Kjerfve, Björn. 2013. Effects of Tidal Range Variability and Local Morphology on Hydrodynamic Behavior and Salinity Structure in the Caeté River Estuary, North Brazil. International Journal of Oceanography،Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-462804
Modern Language Association (MLA)
Cavalcante, Geórgenes H.…[et al.]. Effects of Tidal Range Variability and Local Morphology on Hydrodynamic Behavior and Salinity Structure in the Caeté River Estuary, North Brazil. International Journal of Oceanography No. 2013 (2013), pp.1-10.
https://search.emarefa.net/detail/BIM-462804
American Medical Association (AMA)
Cavalcante, Geórgenes H.& Feary, David A.& Kjerfve, Björn. Effects of Tidal Range Variability and Local Morphology on Hydrodynamic Behavior and Salinity Structure in the Caeté River Estuary, North Brazil. International Journal of Oceanography. 2013. Vol. 2013, no. 2013, pp.1-10.
https://search.emarefa.net/detail/BIM-462804
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-462804