Projections of Beach Erosion and Associated Costs in Chile

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dc.article.number5883
dc.catalogadoraba
dc.contributor.authorWinckler, Patricio
dc.contributor.authorAgredano Martín, Roberto
dc.contributor.authorEsparza Acuña, César Antonio
dc.contributor.authorMelo Contreras, Óscar
dc.contributor.authorSactic, María Isabel
dc.contributor.authorMartínez, Carolina
dc.date.accessioned2023-07-10T13:33:12Z
dc.date.available2023-07-10T13:33:12Z
dc.date.issued2023
dc.description.abstractEconomic costs associated to coastal erosion are projected in 45 sandy beaches in Chilean coasts. We compare mid-century (2026–2045) and end-of-century projections (2081–2100) of wave climate and sea-level rise (SLR) with a historical period (1985–2004) using several General Circulation Models for the RCP 8.5 scenario. Offshore wave data are then downscaled to each site, where shoreline retreat is assessed with Bruun rule for various berm heights and sediment diameters. Results indicate that mid-century retreat would be moderate (>13 m) while larger end-of-century projections (>53 m) are explained by SLR (0.58 ± 0.25 m). A small counterclockwise rotation of long beaches is also expected. To assess the costs of shoreline retreat, we use the benefit transfer methodology by using adjusted values from a previous study to the sites of interest. Results show that, by mid-century, beach width reduction would be between 2.0% and 68.2%, implying a total annual loss of USD 5.6 [5.1–6.1] million. For end-the-century projections, beach width reduction is more significant (8.4–100%), involving a total annual loss of USD 10.5 [8.1–11.8] million. Additionally, by the end-of-century, 13–25 beaches could disappear. These costs should be reduced with coastal management practices which are nevertheless inexistent in the country.
dc.fechaingreso.objetodigital2023-07-11
dc.fuente.origenORCID
dc.identifier.doi10.3390/su15075883
dc.identifier.eissn2071-1050
dc.identifier.urihttp://doi.org/10.3390/su15075883
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/74129
dc.information.autorucEscuela de Ingeniería; Esparza Acuña, César Antonio; S/I; 1092162
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Melo Contreras, Óscar; 0000-0002-9136-5413; 77463
dc.information.autorucFacultad de Agronomía e Ingenieria Forestal; Sactic Chacón, María Isabel; S/I; 070612
dc.information.autorucInstituto de Geografía; Martínez Reyes, Carolina Del Pilar; 0000-0002-7631-5311; 249883
dc.issue.numero7
dc.language.isoen
dc.nota.accesoContenido completo
dc.pagina.final23
dc.pagina.inicio1
dc.revistaSustainabilityes_ES
dc.rightsacceso abierto
dc.rights.licenseAtribución 4.0 Internacional (CC BY 4.0)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectWave climatees_ES
dc.subjectSea level risees_ES
dc.subjectShoreline changees_ES
dc.subjectEconomic losseses_ES
dc.subject.ddc550
dc.subject.deweyCiencias de la tierraes_ES
dc.titleProjections of Beach Erosion and Associated Costs in Chile
dc.typeartículo
dc.volumen15
sipa.codpersvinculados1092162
sipa.codpersvinculados77463
sipa.codpersvinculados070612
sipa.codpersvinculados249883
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