Development of methods for satellite shoreline detection and monitoring of megacusp undulations

Coastal zones, particularly sandy beaches, are highly dynamic environments subject to a variety of natural and anthropogenic forcings. Instantaneous shoreline is a widely used indicator of beach changes in image-based applications, and it can display undulations at different spatial and temporal sca...

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Authors: Angelini, Riccardo, Angelats, Eduard, Luzi, Guido, Masiero, Andrea, Simarro Grande, Gonzalo, Ribas Prats, Francesca|||0000-0003-4701-5982
Format: article
Publication Date:2024
Country:España
Institution:Universitat Politècnica de Catalunya (UPC)
Repository:UPCommons. Portal del coneixement obert de la UPC
Language:English
OAI Identifier:oai:upcommons.upc.edu:2117/427215
Online Access:https://hdl.handle.net/2117/427215
https://dx.doi.org/10.3390/rs16234553
Access Level:Open access
Keyword:Shoreline extraction
Megacusps
Sentinel-2
PlanetScope
Multispectral imagery
Àrees temàtiques de la UPC::Física
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spelling Development of methods for satellite shoreline detection and monitoring of megacusp undulationsAngelini, RiccardoAngelats, EduardLuzi, GuidoMasiero, AndreaSimarro Grande, GonzaloRibas Prats, Francesca|||0000-0003-4701-5982Shoreline extractionMegacuspsSentinel-2PlanetScopeMultispectral imageryÀrees temàtiques de la UPC::FísicaCoastal zones, particularly sandy beaches, are highly dynamic environments subject to a variety of natural and anthropogenic forcings. Instantaneous shoreline is a widely used indicator of beach changes in image-based applications, and it can display undulations at different spatial and temporal scales. Megacusps, periodic seaward and landward shoreline perturbations, are an example of such undulations that can significantly modify beach width and impact its usability. Traditionally, the study of these phenomena relied on video monitoring systems, which provide high-frequency imagery but limited spatial coverage. Instead, this study explored the potential of employing multispectral satellite-derived shorelines, specifically from Sentinel-2 (S2) and PlanetScope (PLN) platforms, for characterizing and monitoring megacusps’ formation and their dynamics over time. First, a tool was developed and validated to guarantee accurate shoreline detection, based on a combination of spectral indices, along with both thresholding and unsupervised clustering techniques. Validation of this shoreline detection phase was performed on three micro-tidal Mediterranean beaches, comparing with high-resolution orthomosaics and in-situ GNSS data, obtaining a good subpixel accuracy (with a mean absolute deviation of 1.5–5.5 m depending on the satellite type). Second, a tool for megacusp characterization was implemented and subsequent validation with reference data proved that satellite-derived shorelines could be used to robustly and accurately describe megacusps. The methodology could not only capture their amplitude and wavelength (of the order of 10 and 100 m, respectively) but also monitor their weekly–daily evolution using different potential metrics, thanks to combining S2 and PLN imagery. Our findings demonstrate that multispectral satellite imagery provides a viable and scalable solution for monitoring shoreline megacusp undulations, enhancing our understanding and offering an interesting option for coastal management.Objectius de Desenvolupament Sostenible::13 - Acció per al ClimaMultidisciplinary Digital Publishing Institute (MDPI)20242024-12-0420252025-03-27journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/427215https://dx.doi.org/10.3390/rs16234553reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengAgencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2021-124272OB-C22 RESOLVIENDO CARENCIAS DE CONOCIMIENTO CRITICAS PARA MEJORAR LAS PROYECCIONES MORFODINAMICAS DE COSTAS BAJAS EN EL SIGLO XXI: MODELADOopen accesshttp://purl.org/coar/access_right/c_abf2Attribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/4272152026-05-27T15:37:01Z
dc.title.none.fl_str_mv Development of methods for satellite shoreline detection and monitoring of megacusp undulations
title Development of methods for satellite shoreline detection and monitoring of megacusp undulations
spellingShingle Development of methods for satellite shoreline detection and monitoring of megacusp undulations
Angelini, Riccardo
Shoreline extraction
Megacusps
Sentinel-2
PlanetScope
Multispectral imagery
Àrees temàtiques de la UPC::Física
title_short Development of methods for satellite shoreline detection and monitoring of megacusp undulations
title_full Development of methods for satellite shoreline detection and monitoring of megacusp undulations
title_fullStr Development of methods for satellite shoreline detection and monitoring of megacusp undulations
title_full_unstemmed Development of methods for satellite shoreline detection and monitoring of megacusp undulations
title_sort Development of methods for satellite shoreline detection and monitoring of megacusp undulations
dc.creator.none.fl_str_mv Angelini, Riccardo
Angelats, Eduard
Luzi, Guido
Masiero, Andrea
Simarro Grande, Gonzalo
Ribas Prats, Francesca|||0000-0003-4701-5982
author Angelini, Riccardo
author_facet Angelini, Riccardo
Angelats, Eduard
Luzi, Guido
Masiero, Andrea
Simarro Grande, Gonzalo
Ribas Prats, Francesca|||0000-0003-4701-5982
author_role author
author2 Angelats, Eduard
Luzi, Guido
Masiero, Andrea
Simarro Grande, Gonzalo
Ribas Prats, Francesca|||0000-0003-4701-5982
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Shoreline extraction
Megacusps
Sentinel-2
PlanetScope
Multispectral imagery
Àrees temàtiques de la UPC::Física
topic Shoreline extraction
Megacusps
Sentinel-2
PlanetScope
Multispectral imagery
Àrees temàtiques de la UPC::Física
description Coastal zones, particularly sandy beaches, are highly dynamic environments subject to a variety of natural and anthropogenic forcings. Instantaneous shoreline is a widely used indicator of beach changes in image-based applications, and it can display undulations at different spatial and temporal scales. Megacusps, periodic seaward and landward shoreline perturbations, are an example of such undulations that can significantly modify beach width and impact its usability. Traditionally, the study of these phenomena relied on video monitoring systems, which provide high-frequency imagery but limited spatial coverage. Instead, this study explored the potential of employing multispectral satellite-derived shorelines, specifically from Sentinel-2 (S2) and PlanetScope (PLN) platforms, for characterizing and monitoring megacusps’ formation and their dynamics over time. First, a tool was developed and validated to guarantee accurate shoreline detection, based on a combination of spectral indices, along with both thresholding and unsupervised clustering techniques. Validation of this shoreline detection phase was performed on three micro-tidal Mediterranean beaches, comparing with high-resolution orthomosaics and in-situ GNSS data, obtaining a good subpixel accuracy (with a mean absolute deviation of 1.5–5.5 m depending on the satellite type). Second, a tool for megacusp characterization was implemented and subsequent validation with reference data proved that satellite-derived shorelines could be used to robustly and accurately describe megacusps. The methodology could not only capture their amplitude and wavelength (of the order of 10 and 100 m, respectively) but also monitor their weekly–daily evolution using different potential metrics, thanks to combining S2 and PLN imagery. Our findings demonstrate that multispectral satellite imagery provides a viable and scalable solution for monitoring shoreline megacusp undulations, enhancing our understanding and offering an interesting option for coastal management.
publishDate 2024
dc.date.none.fl_str_mv 2024
2024-12-04
2025
2025-03-27
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/427215
https://dx.doi.org/10.3390/rs16234553
url https://hdl.handle.net/2117/427215
https://dx.doi.org/10.3390/rs16234553
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Agencia Estatal de Investigación http://doi.org/10.13039/501100011033 Plan Estatal de Investigación Científica y Técnica y de Innovación 2021-2023 PID2021-124272OB-C22 RESOLVIENDO CARENCIAS DE CONOCIMIENTO CRITICAS PARA MEJORAR LAS PROYECCIONES MORFODINAMICAS DE COSTAS BAJAS EN EL SIGLO XXI: MODELADO
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution 4.0 International
http://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
publisher.none.fl_str_mv Multidisciplinary Digital Publishing Institute (MDPI)
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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