The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars
Abstract The Capibaribe Estuary is a water body that crosses the Recife Metropolitan Area (RMA), one of the largest population centers in Brazil, and causes large pollutant loads and poor water quality. The fresh water inflow of wastewater from the RMA can account for three times the volume of the r...
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| Format: | Article |
| Language: | English |
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Universidade de São Paulo
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| Series: | Brazilian Journal of Oceanography |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592016000300263&lng=en&tlng=en |
| _version_ | 1818663164047261696 |
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| author | Carlos Augusto França Schettini Josineide B. de Miranda Arnoldo Valle-Levinson Eliane C. Truccolo Ernesto C. Domingues |
| author_facet | Carlos Augusto França Schettini Josineide B. de Miranda Arnoldo Valle-Levinson Eliane C. Truccolo Ernesto C. Domingues |
| author_sort | Carlos Augusto França Schettini |
| collection | DOAJ |
| description | Abstract The Capibaribe Estuary is a water body that crosses the Recife Metropolitan Area (RMA), one of the largest population centers in Brazil, and causes large pollutant loads and poor water quality. The fresh water inflow of wastewater from the RMA can account for three times the volume of the river discharge during the low discharge period. This article assesses the hydrodynamics and potential transport of particulate and dissolved scalars in this estuary. A field experiment was conducted to record the water level, current velocity, salinity, temperature and suspended particulate matter (SPM) contents during a full semi-diurnal tidal cycle. This experiment was performed during low river discharge and spring tide conditions. The estuary showed a partially mixed circulation pattern. The residual transport of water and salt were up estuary, while the SPM residual transport was down estuary. The former were understood as the effect of the residual circulation around the islands, while the latter was interpreted as a morphological factor inducing greater resuspension during the ebb, despite the symmetrical ebb and flood currents. This mechanism may transport SPM to the inner shelf, even under tide-dominated conditions when the opposite would be expected. |
| first_indexed | 2024-12-17T05:12:29Z |
| format | Article |
| id | doaj.art-59a3609cc64a445c94e06fc219d09e8e |
| institution | Directory Open Access Journal |
| issn | 1982-436X |
| language | English |
| last_indexed | 2024-12-17T05:12:29Z |
| publisher | Universidade de São Paulo |
| record_format | Article |
| series | Brazilian Journal of Oceanography |
| spelling | doaj.art-59a3609cc64a445c94e06fc219d09e8e2022-12-21T22:02:13ZengUniversidade de São PauloBrazilian Journal of Oceanography1982-436X64326327610.1590/S1679-87592016119106403S1679-87592016000300263The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalarsCarlos Augusto França SchettiniJosineide B. de MirandaArnoldo Valle-LevinsonEliane C. TruccoloErnesto C. DominguesAbstract The Capibaribe Estuary is a water body that crosses the Recife Metropolitan Area (RMA), one of the largest population centers in Brazil, and causes large pollutant loads and poor water quality. The fresh water inflow of wastewater from the RMA can account for three times the volume of the river discharge during the low discharge period. This article assesses the hydrodynamics and potential transport of particulate and dissolved scalars in this estuary. A field experiment was conducted to record the water level, current velocity, salinity, temperature and suspended particulate matter (SPM) contents during a full semi-diurnal tidal cycle. This experiment was performed during low river discharge and spring tide conditions. The estuary showed a partially mixed circulation pattern. The residual transport of water and salt were up estuary, while the SPM residual transport was down estuary. The former were understood as the effect of the residual circulation around the islands, while the latter was interpreted as a morphological factor inducing greater resuspension during the ebb, despite the symmetrical ebb and flood currents. This mechanism may transport SPM to the inner shelf, even under tide-dominated conditions when the opposite would be expected.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592016000300263&lng=en&tlng=enHydrodynamicsHydrologyWater qualitySalinitySuspended particulate matter |
| spellingShingle | Carlos Augusto França Schettini Josineide B. de Miranda Arnoldo Valle-Levinson Eliane C. Truccolo Ernesto C. Domingues The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars Brazilian Journal of Oceanography Hydrodynamics Hydrology Water quality Salinity Suspended particulate matter |
| title | The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars |
| title_full | The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars |
| title_fullStr | The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars |
| title_full_unstemmed | The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars |
| title_short | The circulation of the lower Capibaribe Estuary (Brazil) and its implications for the transport of scalars |
| title_sort | circulation of the lower capibaribe estuary brazil and its implications for the transport of scalars |
| topic | Hydrodynamics Hydrology Water quality Salinity Suspended particulate matter |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592016000300263&lng=en&tlng=en |
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