出版社：Instituto Oceanográfico da Universidade de São Paulo
摘要：The circulation and transport of suspended particulate matter in the Caravelas Estuary are assessed.Nearly-synoptic hourly hydrographic, current (ADCP velocity and volume transport) and suspended particulate matter data were collected during a full semidiurnal spring tide, on the two transects Boca do Tomba and Barra Velha and on longitudinal sections at low and high tide.On the first transect the peak ebb currents (-1.5 ms-1) were almost twice as strong as those of the wider and shallow Barra Velha inlet (-0.80 ms-1) and the peak flood currents were 0.75 and 0.60 ms-1, respectively.Due to the strong tidal currents both inlets had weak vertical salinity stratification and were classified with the Stratification-circulation Diagram as Type 2a (partially mixed-weakly stratified) and Type 1a (well mixed).Volume transports were very close, ranging from -3,500 to 3,100 m³s-1 at the ebb and flood, respectively, with a residual -630 m³s-1.The concentration of the suspended particulate matter was closely related to the tidal variation and decreased landwards from 50 mg.L-1 at the estuary mouth, to 10 mg.L-1 at distances of 9 and 16 km for the low and high tide experiments, respectively.The total residual SPM transport was out of the estuary at rates of -18 tons per tidal cycle.
关键词：Estuário de Caravelas;características hidrodinâmicas;transporte de volume e balanço de material particulado em suspensão
其他关键词：Caravelas Estuary;hydrodynamic characteristics;volume transport and suspended particulate matter balance
