Quantification of Coastal Erosion Rates Using Landsat 5, 7, and 8 and Sentinel-2 Satellite Images from 1986–2022—Case Study: Cartagena Bay, Valparaíso, Chile

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dc.catalogadordfo
dc.contributor.authorBriceño de Urbaneja, Idania
dc.contributor.authorPérez-Martínez, Waldo
dc.contributor.authorMartínez Reyes, Carolina Del Pilar
dc.contributor.authorPardo-Pascual, Josep
dc.contributor.authorPalomar-Vázquez, Jesús
dc.contributor.authorAguirre, Catalina
dc.contributor.authorDonoso-Garcés, Raimundo
dc.date.accessioned2025-01-08T14:46:39Z
dc.date.available2025-01-08T14:46:39Z
dc.date.issued2023
dc.description.abstractCoastal erosion has become one of the many natural hazards affecting Chile’s sandy coastlines. Currently, more than 90% of the sandy coasts of Valparaíso show high erosion rates. Cartagena Bay is one of the coastal areas with the greatest transformations caused by extreme events and anthropogenic activities. Satellite imagery is seen as an invaluable resource for following these coastal changes. This study combines optical satellite imagery, a simulation-derived wave climate, in situ data, the SHOREX system developed in Python, and GIS-based tools such as DSAS to quantify rates of change in the Bay from 1986 to 2022. Satellite-derived shorelines were used to identify erosion hotspot areas in the Bay, differentiating the impact of erosive processes associated with ENSO hydrometeorological phenomena, the 27-F 2010 earthquake, and tidal waves from 2015–2022, which led to major transformations in the morphodynamics of the beach. The results show that the Bay is currently undergoing high erosional processes in 20% of the coastline with values <− 1.5 m/year and 60% with erosion rates ranging from [−0.2 to −1.5 m/year]. Since 2015, these processes have been accentuated, due to increased swells throughout the year.
dc.fechaingreso.objetodigital2025-01-08
dc.fuente.origenORCID
dc.identifier.doi10.3390/ECRS2023-16300
dc.identifier.urihttps://doi.org/10.3390/ECRS2023-16300
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/89564
dc.information.autorucInstituto de Geografía; Martinez Reyes Carolina Del Pilar; 0000-0002-7631-5311; 249883
dc.language.isoen
dc.nota.accesoContenido completo
dc.relation.ispartofInternational Electronic Conference on Remote Sensing (5a. : 2023)
dc.rightsacceso abierto
dc.rights.licenseAtribución/Reconocimiento 4.0 Internacional
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/deed.es
dc.subject.ddc550
dc.subject.deweyCiencias de la tierraes_ES
dc.subject.ods15 Life on land
dc.subject.odspa15 Vida de ecosistemas terrestres
dc.titleQuantification of Coastal Erosion Rates Using Landsat 5, 7, and 8 and Sentinel-2 Satellite Images from 1986–2022—Case Study: Cartagena Bay, Valparaíso, Chile
dc.typecomunicación de congreso
sipa.codpersvinculados249883
sipa.trazabilidadORCID;2025-01-06
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