<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0122-9761</journal-id>
<journal-title><![CDATA[Boletín de Investigaciones Marinas y Costeras - INVEMAR]]></journal-title>
<abbrev-journal-title><![CDATA[Bol. Invest. Mar. Cost.]]></abbrev-journal-title>
<issn>0122-9761</issn>
<publisher>
<publisher-name><![CDATA[INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS "JOSE BENITO VIVES DE ANDRÉIS" (INVEMAR)    INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS -JOSE BENITO VIVES DE ANDRÉIS- (INVEMAR)]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0122-97612023000100117</article-id>
<article-id pub-id-type="doi">10.25268/bimc.invemar.2023.52.1.1144</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Sandy beach area estimation through open access satellite information: A calibration for the coast of Montevideo, Uruguay]]></article-title>
<article-title xml:lang="es"><![CDATA[Estimación del área de playa a través de información satelital de libre acceso: calibración para la costa de Montevideo, Uruguay]]></article-title>
<article-title xml:lang="es"><![CDATA[Estimación del área de playa a través de información satelital de libre acceso: calibración para la costa de Montevideo, Uruguay]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orlando]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,UNDECIMAR  ]]></institution>
<addr-line><![CDATA[Montevideo 11400 ]]></addr-line>
<country>Uruguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2023</year>
</pub-date>
<volume>52</volume>
<numero>1</numero>
<fpage>117</fpage>
<lpage>134</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0122-97612023000100117&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0122-97612023000100117&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0122-97612023000100117&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT S andy beaches provide a variety of ecosystem services that support human well-being at coastal areas. These ecosystems are highly dynamic and primarily defined by the interaction between waves, tides and wind regimes. High variability makes beaches vulnerable to physical modifications and climate change, jeopardizing ecosystems functions. This has resulted in accelerated erosion rates and ecological degradation with widespread socioeconomic implications. Coastal dynamic analysis is a data demanding process that requires long term monitoring programs; this study applies an open access methodology to the Landsat collection in order to estimate beach area. This informative variable can help elucidate coastal dynamics, ecosystem attributes and touristic potential. Sand (through Random forest classification) and vegetation (through a threshold of the normalized difference vegetation index) were considered as components of the beach ecosystem. The method was calibrated for the Montevideo coast by testing results against independent estimations of beach area, the area of 20 beaches of the Montevideo coast was estimated for a 35 years&#8217; period. This methodology can be applied anywhere at a very low operational cost, potentially multiplying the available information and allowing better management on the pressing matters of coastal dynamics and sandy beach use.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN L as playas arenosas brindan gran variedad de servicios ecosistémicos sosteniendo el bienestar humano en áreas costeras. Estos ecosistemas dinámicos dependen de la interacción entre: el oleaje, las mareas y los regímenes de viento. Su alta variabilidad los hace vulnerables a las modificaciones físicas y el cambio climático, amenazando la estabilidad de las funciones ecosistémicas. El análisis de la dinámica costera requiere una gran cantidad de información, este estudio utiliza una metodología de acceso libre para estimar el área de playa a través de imágenes satelitales de la colección Landsat. El área de las playas es una variable relevante para dilucidar la dinámica costera, los atributos ecosistémicos y el potencial turístico. La arena (mediante Random Forest) y la cobertura vegetal (mediante el índice de diferencias normalizadas de vegetación) se consideraron como componentes del ecosistema de playa. Se validó el método para la costa de Montevideo, comparando los resultados con medidas independientes, y se estimó el área de 20 playas de para un período de 35 años. Esta metodología está disponible para su aplicación a un costo operativo bajo, representado una oportunidad para aumentar la información disponible y mejorar el manejo en materia de dinámica costera y uso de las playas arenosas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[coastal erosion]]></kwd>
<kwd lng="en"><![CDATA[ecosystem management]]></kwd>
<kwd lng="en"><![CDATA[Landsat]]></kwd>
<kwd lng="en"><![CDATA[open access]]></kwd>
<kwd lng="en"><![CDATA[sandy beach.]]></kwd>
<kwd lng="es"><![CDATA[erosión costera]]></kwd>
<kwd lng="es"><![CDATA[manejo ecosistémico]]></kwd>
<kwd lng="es"><![CDATA[Landsat]]></kwd>
<kwd lng="es"><![CDATA[acceso libre]]></kwd>
<kwd lng="es"><![CDATA[playas arenosas.]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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