Impacts of climate change on coastal erosion and marine flooding in Rio de Janeiro city, Brazil

IF 1.5 4区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY

Journal of South American Earth Sciences Pub Date : 2025-07-09 DOI:10.1016/j.jsames.2025.105680

João Wagner Alencar Castro , Willian Cruz Gouvea Junior , Daniel Fernandes , Caique Lima Cabral , Guilherme Tenorio Smith da Costa , Frederico Maciel Pinheiro Sampaio de Miranda , Julia Sales Serrano , Karem Moreno Carvalho , Sergio Bezerra Lima Junior

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引用次数: 0

Abstract

The environmental impact of climate change on shoreline erosion and marine flooding pose major challenges for public managers, especially in large coastal cities in Brazil. A significant portion of coastal cities have been protected by riprap structures against natural disasters and also by human action. Increasing storm surges observed in virtually all seasons of the year will allow higher waves to reach avenues and urban areas more frequently, requiring public managers to expand coastal protection structures. This article identifies and quantifies areas subject to beach retreat (coastal erosion) on open-ocean beaches in Rio de Janeiro city. The procedures consisted of acquiring images with moderate spatial resolution of 30.0 m from the sensors of the Landsat 5 (TM), Landsat 7 (ETM+), Landsat 8 (OLI) and Landsat 9 (OLI-2) satellites, referring to the years 1984, 1994, 2004, 2014, and 2023, supplemented by information on tides and wave climate obtained at the time of satellite passage. Results obtained suggest varied granulometric patterns, an increase in the number of storm waves and processes of stability and erosion shoreline in the last 40 yrs. The adoption of measures to replenishment the sediment stock on eroding beaches is necessary due to ongoing climate change.

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气候变化对巴西里约热内卢市海岸侵蚀和海洋洪水的影响

气候变化对海岸线侵蚀和海洋洪水的环境影响对公共管理人员构成了重大挑战，特别是在巴西的沿海大城市。很大一部分沿海城市受到抛石结构的保护，免受自然灾害和人类活动的影响。实际上，一年中所有季节都能观测到越来越多的风暴潮，这将使更高的海浪更频繁地到达道路和城市地区，要求公共管理者扩大海岸保护结构。本文确定并量化了里约热内卢市开放海洋海滩上受海滩退缩（海岸侵蚀）影响的区域。程序包括从Landsat 5 （TM）、Landsat 7 （ETM+）、Landsat 8 （OLI）和Landsat 9 （OLI-2）卫星传感器获取1984年、1994年、2004年、2014年和2023年的空间分辨率为30.0 m的图像，并补充卫星通过时的潮汐和波浪气候信息。结果表明，在过去40年中，粒度模式发生了变化，风暴波的数量增加，海岸线的稳定性和侵蚀过程也有所增加。由于持续的气候变化，有必要采取措施补充受到侵蚀的海滩上的沉积物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of South American Earth Sciences 地学-地球科学综合

CiteScore

3.70

自引率

22.20%

发文量

364

审稿时长

6-12 weeks

期刊介绍： Papers must have a regional appeal and should present work of more than local significance. Research papers dealing with the regional geology of South American cratons and mobile belts, within the following research fields: -Economic geology, metallogenesis and hydrocarbon genesis and reservoirs. -Geophysics, geochemistry, volcanology, igneous and metamorphic petrology. -Tectonics, neo- and seismotectonics and geodynamic modeling. -Geomorphology, geological hazards, environmental geology, climate change in America and Antarctica, and soil research. -Stratigraphy, sedimentology, structure and basin evolution. -Paleontology, paleoecology, paleoclimatology and Quaternary geology. New developments in already established regional projects and new initiatives dealing with the geology of the continent will be summarized and presented on a regular basis. Short notes, discussions, book reviews and conference and workshop reports will also be included when relevant.