<?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>1794-6190</journal-id>
<journal-title><![CDATA[Earth Sciences Research Journal]]></journal-title>
<abbrev-journal-title><![CDATA[Earth Sci. Res. J.]]></abbrev-journal-title>
<issn>1794-6190</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1794-61902021000300297</article-id>
<article-id pub-id-type="doi">10.15446/esrj.v25n3.95782</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Electrical and magnetic data time series' observations as an approach to identify the seismic activity of non-anthropic origin]]></article-title>
<article-title xml:lang="es"><![CDATA[Observaciones de series de tiempo de datos eléctricos y magnéticos como una aproximación para identificar actividad sísmica de origen no antrópico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solano Fino]]></surname>
<given-names><![CDATA[Juan Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Caneva]]></surname>
<given-names><![CDATA[Alexander]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vargas]]></surname>
<given-names><![CDATA[Carlos Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa]]></surname>
<given-names><![CDATA[Luis Hernán]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Colombia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>25</volume>
<numero>3</numero>
<fpage>297</fpage>
<lpage>307</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1794-61902021000300297&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1794-61902021000300297&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1794-61902021000300297&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT In this study, the authors worked on identifying a possible relationship between electromagnetic signals (EM) and seismic events in the lithospheric system in the central region of Colombia. The data, both seismic records and electromagnetic signals, were taken from the catalog of the Seismological Network of the National University of Colombia (RSUNAL) and the catalog of the National Seismological Network of Colombia (RSNC). The project included the design and instrument testing phases for recording seismic signals, electrical potential variations, and magnetic field variations to try to identify possible relationships between these signals. Possible electromagnetic precursors for seismic events were observed, mainly magnetic disturbances, but it was not possible to locate evident electrical anomalies (Seismic Electric Signals - SES). Thus, although the results are not conclusive, the magnetic disturbances identified deserve further long-term analysis.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN En este trabajo, los autores buscaron identificar la existencia de una posible relación entre señales electromagnéticas (EM) y eventos sísmicos que ocurren en el sistema litosférico en la región central de Colombia. Los datos, tanto de registros sísmicos como de señales electromagnéticas, fueron tomados del catálogo de la Red Sismológica de la Universidad Nacional de Colombia (RSUNAL) y del catálogo de la Red Sismológica Nacional de Colombia (RSNC). El proyecto contempló las fases de diseño y prueba de instrumentos para el registro de señales sísmicas, variaciones del potencial eléctrico y variaciones del campo magnético, para luego tratar de identificar posibles relaciones entre estas señales. Se observaron posibles precursores electromagnéticos de eventos sísmicos, principalmente perturbaciones magnéticas, pero no fue posible identificar anomalías eléctricas claras (Señales Eléctricas Sísmicas - SES). Por lo tanto, aunque los resultados no son concluyentes, las perturbaciones magnéticas identificadas merecen un análisis adicional a largo plazo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[3Earthquake]]></kwd>
<kwd lng="en"><![CDATA[Precursor]]></kwd>
<kwd lng="en"><![CDATA[Electromagnetic signal]]></kwd>
<kwd lng="en"><![CDATA[SES]]></kwd>
<kwd lng="en"><![CDATA[Colombia]]></kwd>
<kwd lng="es"><![CDATA[Sismo]]></kwd>
<kwd lng="es"><![CDATA[Precursor]]></kwd>
<kwd lng="es"><![CDATA[Señal electromagnética]]></kwd>
<kwd lng="es"><![CDATA[SES]]></kwd>
<kwd lng="es"><![CDATA[Colombia]]></kwd>
</kwd-group>
</article-meta>
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