<?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>0256-7024</journal-id>
<journal-title><![CDATA[Revista Geológica de América Central]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Geol. Amér. Central]]></abbrev-journal-title>
<issn>0256-7024</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0256-70242021000200305</article-id>
<article-id pub-id-type="doi">10.15517/rgac.v0i65.46696</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Modelo unidimensional de velocidades sísmicas y características tomográficas tridimensionales del Caribe Sur de Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[One-dimensional seismic velocity model and 3D tomographic features of the Southern Caribbean of Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arroyo]]></surname>
<given-names><![CDATA[Ivonne G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Linkimer]]></surname>
<given-names><![CDATA[Lepolt]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica Escuela Centroamericana de Geología (ECG) ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<numero>65</numero>
<fpage>305</fpage>
<lpage>320</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0256-70242021000200305&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0256-70242021000200305&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0256-70242021000200305&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El Caribe Sur de Costa Rica fue en 1991 el escenario del último gran terremoto (Mw 7,7) entre la placa Caribe y la microplaca de Panamá. Pese a la alta sismicidad y avances en la cobertura de las redes sísmicas, esa zona carece de imágenes tomográficas detalladas. Usando los paquetes VELEST y SIMULPS, presentamos los modelos de velocidad unidimensional y tridimensional resultantes de la inversión de 1208 sismos registrados entre 1998 y 2020 por la Red Sismológica Nacional (RSN). Esta nueva tomografía muestra una franja de bajas velocidades que se inclina desde el Caribe hacia el suroeste hasta los 50 km de profundidad debajo de Talamanca, incluyendo el hipocentro del terremoto de Limón y sismicidad hasta los 30 km. Se interpreta esta configuración como la subducción de la placa Caribe debajo de la microplaca de Panamá y el terremoto de Limón como un evento de zona sismogénica interplacas. La geometría determinada proporciona un nuevo marco para interpretar la compleja tectónica del sureste de Costa Rica.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract In 1991, the Southern Caribbean of Costa Rica was the setting of the latest large earthquake (Mw 7.7) between the Caribbean plate and the Panama microplate. Despite the high seismicity and advances in seismic network coverage, this area lacks detailed tomographic images. Using the VELEST and SIMULPS packages, we derive the one-dimensional and three-dimensional velocity models resulting from the inversion of 1208 earthquakes recorded between 1998 and 2020 by the National Seismological Network (RSN). This new tomography shows a band of low velocities that inclines towards the southwest down to depths of 50 km below Talamanca, including the hypocenter of the Limon earthquake and seismicity down to 30 km. This configuration is interpreted as the subduction of the Caribbean plate under the Panama microplate and the Limon earthquake as an interplate seismogenic zone event. The determined geometry provides a new framework for interpreting the complex tectonics of southeastern Costa Rica.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[tomografía sísmica]]></kwd>
<kwd lng="es"><![CDATA[subducción]]></kwd>
<kwd lng="es"><![CDATA[sismicidad de Costa Rica]]></kwd>
<kwd lng="es"><![CDATA[Cinturón Deformado del Norte de Panamá]]></kwd>
<kwd lng="es"><![CDATA[terremoto de Limón.]]></kwd>
<kwd lng="en"><![CDATA[Seismic Tomography]]></kwd>
<kwd lng="en"><![CDATA[Subduction]]></kwd>
<kwd lng="en"><![CDATA[Seismicity in Costa Rica]]></kwd>
<kwd lng="en"><![CDATA[North Panama Deformed Belt]]></kwd>
<kwd lng="en"><![CDATA[Limon Earthquake]]></kwd>
</kwd-group>
</article-meta>
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