Análisis multitemporal de la línea de Costa en el sector Playa Salguero (Santa Marta), entre el periodo 2016 al 2025.
Fecha
2025-08
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Universidad de Manizales
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Resumen
La erosión costera es un problema ambiental y socioeconómico que afecta diversas regiones del mundo, y Colombia no es ajena a esta problemática. Playa Salguero, en Santa Marta, ha evidenciado cambios significativos en su línea de costa debido a factores naturales y antrópicos. Este estudio tuvo como objetivo analizar la dinámica costera de esta zona mediante un análisis multitemporal utilizando los SIG, con el fin de comprender mejor los patrones de erosión y acreción y proponer recomendaciones de gestión costera acordes a las condiciones locales. La metodología empleó imágenes satelitales y las líneas de costa desde 2016 a 2025, procesados y analizados con herramientas de geoprocesamiento como ArcGIS Pro y DSAS. Se aplicaron indicadores como la LRR, NSM y SCE, para cuantificar las variaciones espaciales y temporales. Se identificaron las zonas más susceptibles a procesos erosivos y de acreción. En promedio la tasa erosión costera de Playa Salguero es de 26 cm por año y la acreción de 182 cm por año. El movimiento neto de la línea es de 6,23m con desplazamiento negativo y 16,21 m movimiento positivo. A partir de los resultados obtenidos se dieron recomendaciones de gestión costera, priorizando las Soluciones Basadas en la Naturaleza (SbN), sobre las medidas de mitigación de obras duras. De esta manera, este estudio contribuye al monitoreo y manejo sostenible del litoral, proporcionando información fundamental para las instituciones ambientales y autoridades locales encargadas de la planificación territorial en Playa Salguero.
Coastal erosion is an environmental and socioeconomic problem that affects various regions of the world, and Colombia is no stranger to this problem. Playa Salguero, in Santa Marta, has shown significant changes in its coastline due to natural and anthropogenic factors. The objective of this study was to analyze the coastal dynamics of this area through a multitemporal analysis using GIS, in order to better understand erosion and accretion patterns and propose coastal management recommendations according to local conditions. The methodology used satellite images and coastlines from 2016 to 2025, processed and analyzed with geoprocessing tools such as ArcGIS Pro and DSAS. Indicators such as LRR, NSM y SCE were applied to quantify spatial and temporal variations. The areas most susceptible to erosion and accretion processes were identified. On average, the coastal erosion rate of Playa Salguero is 26 cm per year and accretion is 182 cm per year. The net movement of the line is 6.23 m with negative displacement and 16.21 m with positive movement. Based on the results obtained, coastal management recommendations were given, prioritizing Nature Based Solutions (NBS) over hard works mitigation measures. In this way, this study contributes to the monitoring and sustainable management of the coastline, providing fundamental information for environmental institutions and local authorities in charge of territorial planning in Playa Salguero
Coastal erosion is an environmental and socioeconomic problem that affects various regions of the world, and Colombia is no stranger to this problem. Playa Salguero, in Santa Marta, has shown significant changes in its coastline due to natural and anthropogenic factors. The objective of this study was to analyze the coastal dynamics of this area through a multitemporal analysis using GIS, in order to better understand erosion and accretion patterns and propose coastal management recommendations according to local conditions. The methodology used satellite images and coastlines from 2016 to 2025, processed and analyzed with geoprocessing tools such as ArcGIS Pro and DSAS. Indicators such as LRR, NSM y SCE were applied to quantify spatial and temporal variations. The areas most susceptible to erosion and accretion processes were identified. On average, the coastal erosion rate of Playa Salguero is 26 cm per year and accretion is 182 cm per year. The net movement of the line is 6.23 m with negative displacement and 16.21 m with positive movement. Based on the results obtained, coastal management recommendations were given, prioritizing Nature Based Solutions (NBS) over hard works mitigation measures. In this way, this study contributes to the monitoring and sustainable management of the coastline, providing fundamental information for environmental institutions and local authorities in charge of territorial planning in Playa Salguero
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Sistema de Información Geográfica (SIG), Análisis Multitemporal, Erosión costera, Análisis Geoespacial
