<?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>S0256-70242021000100104</article-id>
<article-id pub-id-type="doi">10.15517/rgac.v0i64.46623</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Sismicidad y ruido sísmico en Costa Rica durante la pandemia del año 2020]]></article-title>
<article-title xml:lang="en"><![CDATA[Seismicity and seismic noise in Costa Rica during the pandemic of 2020]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Linkimer]]></surname>
<given-names><![CDATA[Lepolt]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arroyo-Solórzano]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<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-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de Costa Rica (UCR) Red Sismológica Nacional (RSN) Escuela Centroamericana de Geología (ECG)]]></institution>
<addr-line><![CDATA[San Pedro San José]]></addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2021</year>
</pub-date>
<numero>64</numero>
<fpage>104</fpage>
<lpage>122</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0256-70242021000100104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0256-70242021000100104&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0256-70242021000100104&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Durante el 2020, la Red Sismológica Nacional (RSN) localizó 3480 sismos locales, equivalente a la energía sísmica liberada por un evento de magnitud (Mw) 6,5. La sismicidad se concentró principalmente en seis zonas con 100-350 temblores. Un total de 232 sismos (~7%) fueron sentidos por la población, incluyendo 17 con Mw entre 5,0 y 6,0. La mayoría de los eventos percibidos fueron superficiales (~85% &lt; 30 km) y con Mw baja (~56% &lt; 3,9). Las fallas en las placas cabalgantes provocaron 140 de los sismos sentidos, mientras que la zona sismogénica interplacas de la subducción ocasionó 61, incluyendo el evento más significativo cerca de Jacó en agosto (Mw 6,0). Este sismo y el de Boruca en marzo (Mw 5,6) provocaron las intensidades más altas observadas (VI). Durante el 2020, el nivel de ruido sísmico bajó de 200 a 50 nm debido a las medidas de confinamiento por la pandemia del COVID-19.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract During 2020, the National Seismological Network (RSN) located 3,480 local earthquakes, equivalent to the seismic energy released by an earthquake of magnitude (Mw) 6.5. The seismicity was mainly concentrated in six zones with 100-350 tremors. A total of 232 earthquakes (~ 7%) were felt by the population, including 17 with Mw between 5.0 and 6.0. Most of the felt earthquakes were shallow (~85% &lt;30 km) and small (~56% Mw &lt;3.9). Faulting in the overriding plates caused 140 of the felt earthquakes, while the interplate seismogenic zone caused 61, including the most significant event near Jaco in August (Mw 6.0). This earthquake and the Boruca event in March (Mw 5.6) caused the highest intensities observed (VI). During 2020, the seismic noise level dropped from 200 to 50 nm due to confinement measures of the COVID-19 pandemic.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[estadística sísmica]]></kwd>
<kwd lng="es"><![CDATA[energía sísmica]]></kwd>
<kwd lng="es"><![CDATA[escala de intensidad Mercalli Modificada (IMM)]]></kwd>
<kwd lng="es"><![CDATA[Magnitud momento (Mw)]]></kwd>
<kwd lng="es"><![CDATA[subducción]]></kwd>
<kwd lng="en"><![CDATA[Earthquake Statistics]]></kwd>
<kwd lng="en"><![CDATA[Seismic Energy]]></kwd>
<kwd lng="en"><![CDATA[Modified Mercalli Intensity (MMI)]]></kwd>
<kwd lng="en"><![CDATA[Moment Magnitude (Mw)]]></kwd>
<kwd lng="en"><![CDATA[Subduction.]]></kwd>
</kwd-group>
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