Show simple item record

dc.contributor.authorAndutta, Fernando Pinheiro
dc.contributor.authorde Miranda, Luiz Bruner
dc.contributor.authorFranca Schettini, Carlos Augusto
dc.contributor.authorSiegle, Eduardo
dc.contributor.authorda Silva, Mario Pereira
dc.contributor.authorIzumi, Vitor Massaki
dc.contributor.authorChagas, Felipe Murai
dc.date.accessioned2017-11-10T00:16:57Z
dc.date.available2017-11-10T00:16:57Z
dc.date.issued2013
dc.identifier.issn0278-4343
dc.identifier.doi10.1016/j.csr.2013.03.013
dc.identifier.urihttp://hdl.handle.net/10072/351678
dc.description.abstractEulerian profiles of thermohaline properties and currents have been sampled in the Peruípe River Estuary (Nova Viçosa, BA), southern region of the Caravelas-Peruípe Rivers Estuarine System. One station was located near the mouth (C) and other one up the estuary (E). The Hansen–Rattray diagram classification of the upper reaches of the Peruípe river estuary in the wet season changed from Type 2b (partially mixed and highly stratified—ν=0.88) to Type 1b (highly stratified—ν∼1.00) due to the fortnightly tidal modulation. This region was mainly forced by river discharge (RiE=5.7 and RiE=4.1) and characterized by high (RiL>20) and low stabilities (RiL<20) in the neap and spring tidal cycles. However, near the mouth stratification was strongly modulated by the tide, and its classification alternates from being highly stratified (Type 2b—ν=0.92) in the neap tide to being well mixed with low stratification (Type 1a—ν=1.00); the mouth was dominated by fresh water discharge (RiE=12.9) and tidal stirring (RiE=0.6) in the neap and spring tide, respectively, and were associated with high and low stabilities. The classical steady-state salinity and velocity profiles show good agreement (Skill∼1.0) with the corresponding observational profiles when simulated with a classical analytical model. The main characteristics of the nearly steady-state bidirectional (with a weak barolinic signal) and unidirectional velocity profiles were in good agreement with the estuarine quantitative classifications (Types 2b, 1a and 1b). The rate of change of the potential energy due to fortnightly tidal modulation was slightly higher near the mouth (6.1 J m−3 s−1) than in the upper reaches of the estuary (5.2 J m−3 s−1). However, this was not strong enough to generate halocline erosion in the transitional neap to spring tidal cycle, and the estuary classification remained Type 1b. The main conclusions are summarized as follows: (i) Two stations sampled along the Peruípe river estuary gave reasonable insight into its main thermohaline, circulation and salt transport characteristics; (ii) The well-known changes in classification along an estuarine channel were confirmed for the Peruípe estuary; (iii) During the fortnightly tidal modulation (neap to the spring tidal cycle) an increase in the salt transport down the estuary was observed; (iv) Data fitting showed that the best results of the analytical model were obtained using the time-depth mean velocity, instead of the estimated velocity generated by the fresh water discharge.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofpagefrom36
dc.relation.ispartofpageto45
dc.relation.ispartofjournalContinental Shelf Research
dc.relation.ispartofvolume70
dc.subject.fieldofresearchEarth sciences
dc.subject.fieldofresearchOceanography not elsewhere classified
dc.subject.fieldofresearchBiological sciences
dc.subject.fieldofresearchcode37
dc.subject.fieldofresearchcode370899
dc.subject.fieldofresearchcode31
dc.titleTemporal variations of temperature, salinity and circulation in the Peruípe river estuary (nova Viçosa, BA)
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.versionAccepted Manuscript (AM)
gro.rights.copyright© 2013 Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence (http://creativecommons.org/licenses/by-nc-nd/4.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
gro.hasfulltextFull Text
gro.griffith.authorPinheiro Andutta, Fernando


Files in this item

This item appears in the following Collection(s)

  • Journal articles
    Contains articles published by Griffith authors in scholarly journals.

Show simple item record