<?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>2215-3470</journal-id>
<journal-title><![CDATA[Uniciencia]]></journal-title>
<abbrev-journal-title><![CDATA[Uniciencia]]></abbrev-journal-title>
<issn>2215-3470</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional, Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2215-34702020000100001</article-id>
<article-id pub-id-type="doi">10.15359/ru.34-1.1</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio del efecto de un terremoto sobre un marco geodésico de referencia]]></article-title>
<article-title xml:lang=""><![CDATA[Study of the effects of an earthquake on a geodetic reference frame]]></article-title>
<article-title xml:lang=""><![CDATA[Estudo do efeito de um terremoto sobre um sistema geodésico de referência]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valverde-Calderón]]></surname>
<given-names><![CDATA[Jose]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Escuela de Topografía, Catastro y Geodesia ]]></institution>
<addr-line><![CDATA[ Heredia]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2020</year>
</pub-date>
<volume>34</volume>
<numero>1</numero>
<fpage>1</fpage>
<lpage>19</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S2215-34702020000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S2215-34702020000100001&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S2215-34702020000100001&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de esta investigación es determinar el impacto en un conjunto de dieciséis estaciones GNSS localizadas en Costa Rica, tras el terremoto del 05 de septiembre de 2012. La investigación es de tipo explicativa y el enfoque que se utilizó es el cálculo de soluciones semanales libres, las cuales fueron luego combinadas para estimar la solución final. Basado en esta, se generaron series temporales que muestran la variación en el tiempo de la posición de las estaciones. Como resultado, se observa que las estaciones GNSS, localizadas a una distancia máxima de 140 km con respecto al epicentro del evento, sufrieron cambios tanto en su ubicación como en la dirección del movimiento y en la magnitud de su velocidad, siendo las estaciones ubicadas en la península de Nicoya las que presentan los mayores cambios. Se concluye que el evento estudiado modificó de forma significativa la posición de trece de las estaciones analizadas, mientras que tres no fueron afectadas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The principal objective of this research is to analyze the impact of the earthquake of September 05, 2012 on a set of sixteen Global Navigation Satellite System (GNSS) stations located in Costa Rica. This is an explanatory investigation based on the calculation of weekly free solutions, which were later combined to obtain a final solution which was in turn used to generate time series that show variations in the position of the stations. It was observed that GNSS stations located at a maximum distance of 140 km from the epicenter of the earthquake experienced changes in both their position and in the magnitude of their speed, with the stations located in the Peninsula de Nicoya being the most affected. It is concluded that the event studied produced significant changes in the position of thirteen of the analyzed stations, while three stations were not affected by the earthquake.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo O principal objetivo desta pesquisa é determinar o impacto sobre um conjunto de dezesseis estações GNSS localizados na Costa Rica, após o terramoto de 05 de setembro de 2012. A investigação é do tipo explicativa e o enfoque utilizado é o cálculo de soluções semanais livre, que foram então combinados para estimar a solução final. Com base nisso, foram geradas séries temporais que mostram a variação no tempo da posição das estações. Como resultado, observa-se que as estações GNSS, localizadas a uma distância máxima de 140 km em relação ao epicentro do evento, sofreram alterações tanto em sua localização quanto na direção de movimento e na magnitude de sua velocidade, sendo as estações localizadas na península de Nicoya as que apresentam as maiores alterações. Conclui-se que o evento estudado modificou significativamente a posição de treze das estações analisadas, enquanto três não foram afetadas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Geodesia]]></kwd>
<kwd lng="es"><![CDATA[terremoto]]></kwd>
<kwd lng="es"><![CDATA[deformación]]></kwd>
<kwd lng="es"><![CDATA[GNSS]]></kwd>
<kwd lng="en"><![CDATA[Geodesy]]></kwd>
<kwd lng="en"><![CDATA[earthquake]]></kwd>
<kwd lng="en"><![CDATA[deformation]]></kwd>
<kwd lng="en"><![CDATA[GNSS]]></kwd>
<kwd lng="pt"><![CDATA[Geodésia]]></kwd>
<kwd lng="pt"><![CDATA[Terremoto Deformação]]></kwd>
<kwd lng="pt"><![CDATA[GNSS]]></kwd>
</kwd-group>
</article-meta>
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