Dinâmica da linha de costa de Tibau-RN no período de 1984 a 2024

Authors

DOI:

https://doi.org/10.26848/rbgf.v19.02.p641-656

Keywords:

Erosão costeira, DSAS, Dinâmica Costeira

Abstract

Coastal erosion is one of the main problems faced in several beaches of the Brazilian coast, being also evidenced in Tibau-RN. Despite this, there is a lack of studies on coastal dynamics in Tibau. Given this, the present paper aimed to analyze the shoreline evolution in Tibau-RN between 1984 and 2024. For this, digital image processing, coastline extraction, coastline variation calculations, classification, and interpretation of results were performed. In the analysis of the period from 1984 to 1992, progradation prevailed in 62% of the shoreline; in the period from 1992 to 2000, erosion predominated with 35.3%; progradation again prevailed for the period between 2000 and 2008, with 60.6%; in the period from 2008 to 2016, a widespread retrogradation occurred on the Tibau coast, with erosion of 73.7%, and retrogradation again predominated for the interval 2016 to 2024, with 67.1%. The linear regression for the period 1984 to 2024 pointed to the prevalence of stability with 78%. The causes of erosion are pointed out as: i) reduction of sedimentary contribution and ii) coastal intervention works. For the municipality, continuous monitoring at different spatial and temporal scales is necessary for a better understanding of the dynamics.

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Author Biographies

Rodrigo Guimarães Carvalho, Universidade do Estado do Rio Grande do Norte

Associate Professor at the State University of Rio Grande do Norte - UERN working alongside the Bachelor's degree in Environmental Management. He is Coordinator of the Postgraduate Program in Geography and professor of the Postgraduate Program in Natural Sciences and the Doctorate in Network of PRODEMA at UFERSA. He is a Collaborating Professor in the Professional Master's Degree in Water Resources Management and Regulation at UFERSA. Completed his Post-Doctorate from the Postgraduate Program in Geography (Grade 6) at the Federal University of Ceará (2018). He is Coordinator of LECAP (Laboratory of Coastal Studies and Protected Areas - UERN) and Leader of the Study and Research Group in Environmental Management. Develops research and extension in the following areas: political ecology and environmental justice; socio-environmental analysis of the Coastal Zone; socio-environmental dynamics in river basins and water resources governance; socio-environmental studies for the creation and management of protected areas; environmental zoning and territorial planning. He is a researcher at the Wind Energy Observatory (International Research Network). He was President of the Apodi-Mossoró River Basin Committee from 2018 to 2022 and Vice-President from 2022 - 2024. He was a full member between 2018 and 2022 and an alternate member of the State Water Resources Council from 2022 - 2024. He was a full member of the Management Council of the Ponta do Tubarão State Sustainable Development Reserve from 2018 to 2023. Between 2014 and 2016 he was Head of the Researcher Support Department of the Dean of Research and Postgraduate Studies at UERN. He was a Productivity Fellow at UERN between 2013 and 2015. He coordinated the Management Plan for the Ponta do Tubarão State Sustainable Development Reserve between 2015 and 2018.

Maykon Targino da Silva, Universidade do Estado do Rio Grande do Norte

Bachelor in Environmental Management (UERN), Master in Natural Sciences (UERN) and PhD in Geology (UFC). Member of the Ceará Geoprocessing Laboratory (GEOCE - UFC) and collaborator of the Center for Socio-Environmental and Territorial Studies (NESAT - UERN).

Alfredo Marcelo Grigio, Universidade do Estado do Rio Grande do Norte

He has a degree in Geography from the Federal University of Paraná (2000), a master's degree in Geodynamics from the Federal University of Rio Grande do Norte (2003) and a doctorate in Geodynamics from the Federal University of Rio Grande do Norte (2008). He is currently Adjunct Professor IV at the State University of Rio Grande do Norte and permanent professor in the Postgraduate Program in Geography and the Postgraduate Program in Natural Sciences at UERN. He has experience in the area of ​​Geosciences, with an emphasis on Geography Information System and Remote Sensing, working mainly on the following topics: geographic information system, Environmental Management, Watershed, Remote Sensing, Multitemporal Analysis, Diagnostics, Zoning, Environmental Vulnerability and Fragility, Natural Resources and environmental planning

Antônio Inácio Neto, Universidade do Estado do Rio Grande do Norte

Master's student (Postgraduate Program in Geography).

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Published

2026-05-23

How to Cite

Nolasco, S., Rodrigo Guimarães Carvalho, Maykon Targino da Silva, Alfredo Marcelo Grigio, & Antônio Inácio Neto. (2026). Dinâmica da linha de costa de Tibau-RN no período de 1984 a 2024. Brazilian Journal of Physical Geography, 19(02), 641–656. https://doi.org/10.26848/rbgf.v19.02.p641-656

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