Dynamics and storm records on sheltered beaches: Paraty, southeast coast of Brazil

Pinheiro, Ana Beatriz; Silva, André Luiz Carvalho da; Neto, José Antônio Baptista

doi:10.1007/s43217-021-00075-2

Cited by 3 publications

(4 citation statements)

References 43 publications

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“…The Costa Verde region is characterized by a drowned coastline with numerous islands and a succession of small inlets, with many sheltered beaches separated by crystalline basement outcrops (Muehe, 2001). It has several small rivers and channels that bring sediment from the steep slopes of Serra do Mar and deposit it on the beaches (Pinheiro et al, 2021a). These rivers and channels are fed by a tropical rain regime concentrated in the summer months, with annual rainfall greater than 2,000 mm (Salgado et al, 2007).…”

Section: Costa Verdementioning

confidence: 99%

“…Waves formed under good weather conditions predominate most of the year, coming from the south quadrant and, mainly, from the southeast (Godoi et al, 2011;Silva et al, 2020). Storm waves, almost always coming from the southwest, are caused by the occasional passage of cold fronts, reaching regions that are usually protected (Godoi et al 2011;Pinheiro et al, 2021a). According to Belo et al (2002), the marine relief of Ilha Grande Bay contributes to gradually decrease the energy of waves and currents along the bay, varying from east (higher energy) to west (lower energy).…”

Section: Costa Verdementioning

confidence: 99%

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Subtidal benthic marine litter off the coast of Rio de Janeiro, Brazil

Araújo,

Videla,

Masi

et al. 2024

Ocean Coast. Res.

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Several studies have reported on the presence of litter on beaches and in the oceans, but this represents the smallest part of the litter that ends up in the sea. Little is known about the litter that settles on the ocean floor, especially near coastal regions. Thus, this study quantified, classified and determined possible sources of subtidal benthic marine litter input off the coast of Rio de Janeiro, Brazil. Different sites were selected in Guanabara Bay, an area with the greatest industrial and population concentration in the state of Rio de Janeiro, and on the coasts of Costa do Sol and Costa Verde, where tourism represents the main economic activity. Material was collected by scuba diving at depths of between 5 and 15 meters at 31 sites distributed among the study areas. A total of 1,209 items was found, with Guanabara Bay having the highest average concentration (92.40 items/km 2 ), followed by Costa do Sol and Costa Verde (14.15 items/km 2 and 9.91 items/km 2 , respectively). Plastic materials are the most representative solid waste (55.08%), followed by metals (14.97%) and fishing gear (12.48%). Results indicated that local activities affected the composition of the marine litter on Costa do Sol and Costa Verde, whereas in Guanabara Bay, anthropogenic material carried by rivers influenced the marine litter composition at certain locations in addition to local activities. Environmental education actions associated with tourism and fishing activities and better waste management are necessary to minimize the presence of litter in subtidal benthic environments.

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Section: Costa Verdementioning

confidence: 99%

Section: Costa Verdementioning

confidence: 99%

Subtidal benthic marine litter off the coast of Rio de Janeiro, Brazil

Araújo,

Videla,

Masi

et al. 2024

Ocean Coast. Res.

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“…Variability in wave direction and intensity due to seasonal climate changes can amplify erosion and accretion processes in the area, especially during extreme events like storms or hurricanes. During these events, high-energy wave surges impact the coast, eroding the beach profile and prolonging its recovery time (Mulcahy et al, 2016;Rangel-Buitrago et al, 2020;Pinheiro et al, 2021). Additionally, during years when the El Niño-Southern Oscillation (ENSO) occurs, greater severity in coastal erosion has been observed due to its influence on the coastal climate of the region (Martínez et al, 2022;Vallarino-Castillo et al, 2022).…”

Section: Oceanographic and Climatic Factorsmentioning

confidence: 99%

“…In the Bay of Ilha Grande, erosion has been observed in places such as Frontiers in Environmental Science frontiersin.org São Gonçalo, Taquari, Prainha, and Jabaquará, due to the combination of storm waves, tides, and a low sediment transport rate. These areas are less exposed to wave action but experience severe effects during high-energy wave events, such as flooding, dune retreat, and loss of urban and coastal infrastructure (Pinheiro et al, 2021).…”

Section: Brazilmentioning

confidence: 99%

Understanding the impact of hydrodynamics on coastal erosion in Latin America: a systematic review

Vallarino Castillo,

Negro Valdecantos,

del Campo

2023

Front. Environ. Sci.

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Coastal zones in Latin America support a significant regional population and are vital for providing essential ecosystem services that underpin crucial socio economic activities. However, these zones face pressing challenges, with coastal erosion being a prominent concern. Coastal erosion not only jeopardizes coastal stability but also leads to occasional loss of natural habitats. This is particularly worrisome for sandy beaches due to the consistent shoreline retreat in specific regions. Short term adverse effects of coastal erosion are often attributed to human activities. Nonetheless, the influence of hydrodynamic processes, intensified by extreme events, is gaining prominence. This is due to the combined impact of tides, waves, currents, and other factors, resulting in accelerated shoreline retreat and significant losses of infrastructure and beach areas across Latin America. This article conducts a comprehensive analysis of case studies in Latin America related to coastal erosion due to hydrodynamic processes. Employing a systematic review approach, data is extracted from Scopus and Web of Science databases. From an initial dataset of 701 records, 62 records meet strict eligibility criteria. Case studies present evidence of how hydrodynamic processes interact with various factors, encompassing oceanic climatic conditions, atmospheric climatic conditions, anthropogenic influences, geomorphological and bathymetric characteristics, geological and tectonic factors, and climate change related aspects. These interactions have an immediate and significant impact on sandy beaches, emphasizing the necessity of comprehensively addressing these linkages when analyzing shoreline changes. This approach aids in identifying key erosion mechanisms and developing effective mitigation measures. Furthermore, the article provides a concise overview of data sources, tools, and methodologies identified in the case studies, spanning from field investigations to the utilization of geographic information systems and numerical models. Underscores the crucial role of international academic collaboration in coastal erosion research, facilitating the adoption of innovative methodologies from other regions, potentially offering a more comprehensive perspective in the formulation of mitigation and adaptation strategies. Finally, potential areas for future research in Latin America are explored, including the assessment of extreme event variability and its impacts on local and regional hydrodynamic processes. This aspect holds critical importance in steering future research towards scenarios that encompass economic and social considerations.

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