<?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>S0016-71692026000101847</article-id>
<article-id pub-id-type="doi">10.22201/igeof.00167169p.2026.65.1.1895</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Ground Motion at the World Heritage Archaeological Site of Monte Albán, Oaxaca, Mexico during Recent Damaging Earthquakes]]></article-title>
<article-title xml:lang="es"><![CDATA[Movimiento del suelo en el sitio arqueológico Patrimonio Mundial de Monte Albán, Oaxaca, México durante terremotos recientes dañinos]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[Shri Krishna]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Iglesias Mendoza]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arroyo]]></surname>
<given-names><![CDATA[Danny]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ordaz]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alcántara]]></surname>
<given-names><![CDATA[Leonardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Almora]]></surname>
<given-names><![CDATA[David]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geofísica ]]></institution>
<addr-line><![CDATA[Ciudad Universitaria ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Metropolitana Azcapotzalco Departamento de Materiales ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>México</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ingeniería ]]></institution>
<addr-line><![CDATA[Mexico City ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2026</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2026</year>
</pub-date>
<volume>65</volume>
<numero>1</numero>
<fpage>1847</fpage>
<lpage>1861</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-71692026000101847&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-71692026000101847&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-71692026000101847&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Archaeological site of Monte Albán, Oaxaca, a testimony to the grandeur of Zapotec civilization, suffered significant damage during the earthquakes of 30 September 1999 (Mw 7.5, R=130 km) near Puerto Escondido, and 8 September 2017 (Mw 8.2, R=383 km) offshore Chiapas. As large subduction thrust earthquakes along the Pacific coast of Oaxaca and intraslab events in the subducted Cocos plate below the continent are relatively frequent, it follows that the archeological zone has been subjected to severe ground motion a large number of times. To adequately strengthen the monument against damage during future events, it is most desirable to know the ground motion at Monte Albán during previous large earthquakes, especially those of 1999 and 2017. Unfortunately, there is no on-site recording of these events. There is, however, an accelerographic station, OXLC, 7 km from the site, which recorded six large earthquakes of interest since 1999. If we know the spectral amplification of ground motion at sites in Monte Albán with respect to OXLC then the recordings at OXLC can be used to estimate the ground motion at Monte Albán through the application of random vibration theory.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El sitio arqueológico de Monte Albán, Oaxaca, testimonio de la grandeza de la civilización zapoteca, sufrió daños significativos durante los terremotos del 30 de septiembre de 1999 (Mw 7.5, R=130 km) cerca de Puerto Escondido, y del 8 de septiembre de 2017 (Mw 8.2, R=383 km) frente a las costas de Chiapas. Dado que los grandes terremotos de subducción a lo largo de la costa del Pacífico de Oaxaca y los eventos intralosa en la placa de Cocos subducida debajo del continente son relativamente frecuentes, se deduce que la zona arqueológica ha sido sometida a un movimiento del suelo severo en numerosas ocasiones. Para fortalecer adecuadamente el monumento contra daños durante eventos futuros, es muy deseable conocer el movimiento del suelo en Monte Albán durante terremotos grandes anteriores, especialmente los de 1999 y 2017. Desafortunadamente, no existe un registro in situ de estos eventos. Sin embargo, hay una estación acelerográfica, OXLC, a 7 km del sitio, que registró seis grandes terremotos de interés desde 1999. Si conocemos la amplificación espectral del movimiento del suelo en sitios de Monte Albán con respecto a OXLC, entonces los registros en OXLC pueden usarse para estimar el movimiento del suelo en Monte Albán mediante la aplicación de la teoría de vibración aleatoria.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Ground motion amplification]]></kwd>
<kwd lng="en"><![CDATA[Archaeological heritage preservation]]></kwd>
<kwd lng="en"><![CDATA[Spectral ratios]]></kwd>
<kwd lng="en"><![CDATA[Strong motion records]]></kwd>
<kwd lng="en"><![CDATA[Seismic hazard assessment]]></kwd>
<kwd lng="es"><![CDATA[Amplificación del movimiento del suelo]]></kwd>
<kwd lng="es"><![CDATA[Preservación del patrimonio arqueológico]]></kwd>
<kwd lng="es"><![CDATA[Cocientes espectrales]]></kwd>
<kwd lng="es"><![CDATA[Registros de movimiento fuerte]]></kwd>
<kwd lng="es"><![CDATA[Evaluación del peligro sísmico]]></kwd>
</kwd-group>
</article-meta>
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