{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T02:04:02Z","timestamp":1775009042270,"version":"3.50.1"},"reference-count":47,"publisher":"MDPI AG","issue":"22","license":[{"start":{"date-parts":[[2021,11,16]],"date-time":"2021-11-16T00:00:00Z","timestamp":1637020800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007142","name":"Deltares","doi-asserted-by":"publisher","award":["Deltares Strategic Research Programme \"Seas and Coastal Zones\""],"award-info":[{"award-number":["Deltares Strategic Research Programme \"Seas and Coastal Zones\""]}],"id":[{"id":"10.13039\/501100007142","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Remote Sensing"],"abstract":"<jats:p>In recent years, satellite imagery has shown its potential to support the sustainable management of land, water, and natural resources. In particular, it can provide key information about the properties and behavior of sandy beaches and the surrounding vegetation, improving the ecomorphological understanding and modeling of coastal dynamics. Although satellite image processing usually demands high memory and computational resources, free online platforms such as Google Earth Engine (GEE) have recently enabled their users to leverage cloud-based tools and handle big satellite data. In this technical note, we describe an algorithm to classify the coastal land cover and retrieve relevant information from Sentinel-2 and Landsat image collections at specific times or in a multitemporal way: the extent of the beach and vegetation strips, the statistics of the grass cover, and the position of the shoreline and the vegetation\u2013sand interface. Furthermore, we validate the algorithm through both quantitative and qualitative methods, demonstrating the goodness of the derived classification (accuracy of approximately 90%) and showing some examples about the use of the algorithm\u2019s output to study coastal physical and ecological dynamics. Finally, we discuss the algorithm\u2019s limitations and potentialities in light of its scaling for global analyses.<\/jats:p>","DOI":"10.3390\/rs13224613","type":"journal-article","created":{"date-parts":[[2021,11,17]],"date-time":"2021-11-17T02:42:28Z","timestamp":1637116948000},"page":"4613","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":15,"title":["Satellite Image Processing for the Coarse-Scale Investigation of Sandy Coastal Areas"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3678-6992","authenticated-orcid":false,"given":"Melissa","family":"Latella","sequence":"first","affiliation":[{"name":"Department of Environmental, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Turin, Italy"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0292-2351","authenticated-orcid":false,"given":"Arjen","family":"Luijendijk","sequence":"additional","affiliation":[{"name":"Department of Hydraulic Engineering, Deltares, Boussinesqweg 1, 2629 HV Delft, The Netherlands"},{"name":"Department of Hydraulic Engineering, Faculty of Civil Engineering and Geosciences, Delft University of Technology, P.O. Box 5048, 2600 GA Delft, The Netherlands"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4428-3324","authenticated-orcid":false,"given":"Antonio M.","family":"Moreno-Rodenas","sequence":"additional","affiliation":[{"name":"Department of Hydraulic Engineering, Deltares, Boussinesqweg 1, 2629 HV Delft, The Netherlands"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7311-6018","authenticated-orcid":false,"given":"Carlo","family":"Camporeale","sequence":"additional","affiliation":[{"name":"Department of Environmental, Land and Infrastructure Engineering, Politecnico di Torino, 10129 Turin, Italy"}]}],"member":"1968","published-online":{"date-parts":[[2021,11,16]]},"reference":[{"key":"ref_1","first-page":"584","article-title":"A Global Analysis of Human Settlement in Coastal Zones","volume":"19","author":"Small","year":"2003","journal-title":"J. Coast. 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