<?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>S0256-70242021000200396</article-id>
<article-id pub-id-type="doi">10.15517/rgac.v0i65.46881</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cambios geomorfológicos e hidrológicos inducidos por el terremoto (Mw 7,7) del 22 de abril de 1991 en la provincia de Limón, Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[Geomorphological and hydrological changes induced by the April 22, 1991 Limón, Costa Rica earthquake (Mw 7.7)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Barrantes]]></surname>
<given-names><![CDATA[Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vahrson]]></surname>
<given-names><![CDATA[Wilhelm G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mora]]></surname>
<given-names><![CDATA[Sergio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Escuela de Ciencias Geográficas ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Costa Rica</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Eberswalde University for Sustainable Development  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Germany</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,ARX Consultorías  ]]></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>396</fpage>
<lpage>415</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0256-70242021000200396&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0256-70242021000200396&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0256-70242021000200396&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El Terremoto de Limón indujo cambios en la geodinámica externa como: levantamiento cortical, licuación de suelos, asentamientos del terreno e inestabilidad de laderas. Esta investigación se concentra en los cambios hidrológicos y geomorfológicos provocados. La metodología seguida parte de la observación de campo, la cartografía de inestabilidad de laderas, la concentración de materiales sólidos y el análisis comparativo de imágenes satelitales y fotografías aéreas. Se determinó que fueron destruidos alrededor de 140 km2 de cubierta vegetal, lo cual intensificó la escorrentía superficial y la erosión. Aproximadamente 210 millones de m3 de materiales sólidos fueron transportados por los sistemas fluviales. Estos procesos afectaron las cuencas altas y medias primero y luego los abanicos aluviales de piedemonte, con la acumulación de sedimentos y subsecuentemente su remoción hacia aguas abajo, lo cual produjo un proceso de progradación acelerado entre 1992 y 1998.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The Limón Earthquake induced changes in external geodynamics processes such as: crustal uplift, soil liquefaction, land settlement and slope instability. This research focuses on the hydrological and geomorphological changes. The methodology followed starts from field observation, landslide mapping, concentration of solid materials, and comparative analysis of satellite images and aerial photographs. It was determined that around 140 km2 of vegetation cover were destroyed, which intensified surface runoff and soil erosion. Approximately 210 million m3 of solid materials were transported by fluvial systems. These processes affected the upper and middle basins first and then the alluvial fans at the foothills, with the accumulation of sediments and subsequently their removal downstream, which produced an accelerated progradation process between 1992 and 1998.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Limón Earthquake]]></kwd>
<kwd lng="en"><![CDATA[External Geodynamics]]></kwd>
<kwd lng="en"><![CDATA[Fluvial Geomorphology]]></kwd>
<kwd lng="en"><![CDATA[Landslides]]></kwd>
<kwd lng="en"><![CDATA[Slope Instability]]></kwd>
<kwd lng="en"><![CDATA[Caribbean Slope]]></kwd>
<kwd lng="es"><![CDATA[terremoto de Limón]]></kwd>
<kwd lng="es"><![CDATA[geodinámica externa]]></kwd>
<kwd lng="es"><![CDATA[geomorfología fluvial]]></kwd>
<kwd lng="es"><![CDATA[inestabilidad de laderas]]></kwd>
<kwd lng="es"><![CDATA[deslizamientos]]></kwd>
<kwd lng="es"><![CDATA[vertiente Caribe]]></kwd>
</kwd-group>
</article-meta>
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