<?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>0016-7169</journal-id>
<journal-title><![CDATA[Geofísica internacional]]></journal-title>
<abbrev-journal-title><![CDATA[Geofís. Intl]]></abbrev-journal-title>
<issn>0016-7169</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Geofísica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-71692017000100027</article-id>
<article-id pub-id-type="doi">10.19155/geofint.2017.056.1.3</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Evaluation of macroseismic intensities in Mexico from recent earthquakes using ¿Sintió un sismo? (Did you feel it?)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montalvo-Arrieta]]></surname>
<given-names><![CDATA[Juan C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sosa-Ramírez]]></surname>
<given-names><![CDATA[Rocío L.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Campos]]></surname>
<given-names><![CDATA[Xyoli]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ciencias de la Tierra ]]></institution>
<addr-line><![CDATA[ N.L.]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geofísica Departamento de Sismología]]></institution>
<addr-line><![CDATA[ CDMX]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<volume>56</volume>
<numero>1</numero>
<fpage>27</fpage>
<lpage>36</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-71692017000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-71692017000100027&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-71692017000100027&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Macroseismic investigations with data collected through online surveys has acquired relevance in recent years. Its easy access and low cost allow assessments of the severity of an earthquake from its effects as observed by the population. Furthermore, it is possible to generate attenuation curves for a particular region, visualize the condition of the buildings from a zip code-averaged distribution map, and estimate possible site effects. In regions without a good coverage of seismic networks, macroseismic intensities have proved to be a substitute for instrumental data. In this paper intensity maps for four earthquakes in different regions of Mexico are presented, based on data from the database of ¿Sintió un sismo? program, an online survey implemented in 2014. Less attenuation was found in areas considered tectonically stable than in those considered as active regions.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: Las investigaciones macrosísmicas utilizando datos recolectados a partir de encuestas en línea han adquirido un gran auge en los últimos años. Su fácil acceso y bajo costo permiten realizar evaluaciones de la severidad del sismo a partir de los efectos observados por la población. Además es posible generar curvas de atenuación para una región en particular, visualizar el estado de las construcciones y los posibles efectos de sitio. En regiones donde no se tiene una buena cobertura de redes sísmicas, las intensidades macrosísmicas han demostrado ser un gran sustituto de datos instrumentales. En este trabajo se presentan mapas de intensidades macrosísmicas para cuatro sismos en distintos puntos del país. Los datos se obtuvieron de la base de datos del programa ¿Sintió un sismo?, una encuesta en línea implementada en el 2014. Encontramos que la atenuación es menor en zonas consideradas tectónicamente estables que en regiones activas.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Mapas de distribución de intensidades]]></kwd>
<kwd lng="es"><![CDATA[curvas de atenuación de la intensidad]]></kwd>
<kwd lng="es"><![CDATA[intensidad comunitaria de internet]]></kwd>
<kwd lng="es"><![CDATA[sacudida del terreno]]></kwd>
<kwd lng="es"><![CDATA[efectos de sitio]]></kwd>
<kwd lng="en"><![CDATA[Intensity distributions maps]]></kwd>
<kwd lng="en"><![CDATA[attenuation intensity curves]]></kwd>
<kwd lng="en"><![CDATA[community internet intensity]]></kwd>
<kwd lng="en"><![CDATA[ground shaking]]></kwd>
<kwd lng="en"><![CDATA[site effects]]></kwd>
</kwd-group>
</article-meta>
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