Avaliação Do Potencial De Geração Eólica Offshore Na Região Costeira Dos Municípios De Cabo Frio E Arraial Do Cabo, Estado Do Rio De Janeiro

Vinhoza, Amanda; Cataldi, Márcio; Dragaud, Ian Cunha D'amato Viana

doi:10.5151/engpro-eneeamb2016-er-010-4816

Cited by 1 publication

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“…During cold front systems and extratropical cyclones, the occurrence of storm surges and destructive waves from southwest-south quadrant is recorded (Dias et al, 2014;Quadros et al, 2016). According to Silva (2009) the tide is asymmetrical and semi-diurnal, with an amplitude of approximately 1.0 meter in spring tide.…”

Section: Study Areamentioning

confidence: 99%

Satellite-Derived Bathymetry Models from Sentinel-2A and 2B in the Coastal Clear Waters of Arraial do Cabo, Rio de Janeiro, Brazil

Vargas¹,

Wasserman²,

Silva

et al. 2021

Rev. Bras. Geog. Fis.

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Mapping coastal environments is a challenging task, as field surveys and favorable oceanographic conditions are required. Remote sensing offers a practical alternative for extracting depth information, obtaining a fast, repetitive and low-cost mapping over large areas to optimize and minimize field work. This study aims to generate and evaluate Satellite-Derived Bathymetric (SDB) models from Sentinel-2A and 2B images on Praia dos Anjos, Brazil. The log-transform band ratio model was applied in this study. Two images from Sentinel-2 were used, from April 6, 2019 and June 20, 2019. For calibration and validation of SDB, depths were measured in the field with an echosounder on April 4, 2019. Different intervals of depths were tested, and the red wavelength to estimate depths up to 4 m. The statistical correlation between the image and control points on April 6, was r2 = 0.927 for 1-13 m depth interval and between SDB and check points was r2 = 0.893 with a Root Mean Square Error (RMSE) = 1.095. On June 20, the correlation between image and control points was r2 = 0.938 for 1-13 m depth interval, and between SDB and check points was r2 = 0.919 with a RMSE = 0.98. This study showed that remote sensing can be applied to estimate depths on Praia dos Anjos. Bathymetric information is essential for environmental monitoring and coastal engineering works. Further tests in the area are recommended to improve the models and an assessment of the calibrated equations for future applications with new measured check points.

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Section: Study Areamentioning

confidence: 99%