<?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>S0016-71692023000100403</article-id>
<article-id pub-id-type="doi">10.22201/igeof.2954436xe.2023.62.1.1448</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Reconstrucción de Imágenes Sísmicas Virtuales con Técnicas de Interferometría en Datos de Sísmica Pasiva]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Solano Bahena]]></surname>
<given-names><![CDATA[René]]></given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre González]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ávila-Carrera]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Granados Chavarría]]></surname>
<given-names><![CDATA[Iván]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ingeniería ]]></institution>
<addr-line><![CDATA[Ciudad Universitaria Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Mexicano del Petróleo  ]]></institution>
<addr-line><![CDATA[San Bartolo Atepehuacan Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geofísica ]]></institution>
<addr-line><![CDATA[Ciudad Universitaria Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2023</year>
</pub-date>
<volume>62</volume>
<numero>1</numero>
<fpage>403</fpage>
<lpage>418</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-71692023000100403&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-71692023000100403&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-71692023000100403&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El objetivo de este trabajo es obtener secciones sísmicas para delimitar estructuras geológicas asociadas a yacimientos de hidrocarburos. Utilizamos datos de sísmica pasiva de un arreglo rectangular localizado al noreste de la República Mexicana y el método de Interferometría Sísmica (IS), el cual permite extraer la función de Green mediante el uso de correlaciones cruzadas (CC(t)) de trazas de ruido sísmico. Procesamos 6 líneas de 8 km de longitud aproximadamente, con 159 geófonos cada una. Las CC(t) obtenidas (también llamadas pseudo-secciones sísmicas de tiros virtuales) fueron procesadas para la extracción de información estructural y de velocidad subsuperficial, con los algoritmos que usualmente son utilizados en la industria de la sismología de exploración. Los resultados los reagrupamos en grupos de offset común (Common Offset Gathers, por sus siglas en ingles COG), para generar imágenes del campo de velocidades en el subsuelo en términos de secciones sísmicas de offset cero. Realizamos un procesamiento que consistió en aplicar el método de la transformada de ondícula, para descomponer y reconstruir las CC(t) a partir de la ondícula de Meyer, mejorando la calidad de las CC(t). Posteriormente, generamos nuevas pseudo-secciones sísmicas considerando un offset en común y varias longitudes entre fuente-receptor. En este caso los resultados mejoraron substancialmente, mostrando los reflectores esperados. Observamos que, con un offset mayor, la profundidad de investigación aumentaba, aunque la resolución superficial disminuía. Finalmente, las secciones obtenidas fueron comparadas con una sección sísmica convencional (también llamadas secciones de sísmica &#8220;activa&#8221;) migrada en profundidad.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract This paper aims to obtain compressional body waves (seismic sections) to delimit geological structures associated with hydrocarbon reservoirs. We used a passive seismic dataset from a rectangular array located at northeast of Mexico. Seismic Interferometry (IS) method, which allows extracting the Green&#8217;s function by using cross-correlations (CC(t)) of seismic traces was applied. We processed six lines of approximately 8 km length, with 159 geophones each. The obtained CC(t) (also called virtual shots pseudo-sections) were processed with the algorithms that generally are used in the seismic exploration industry to extract the structural and sub-surface velocity information. We regrouped the results of the pseudo-sections of virtual shots by common offset gathers (COG) to generate subsurface images in terms of a zero-offset seismic section. Although, alternative processing algorithms were performed, which consists in applying the wavelet transform method to decompose and reconstruct the CC(t) by means of the Meyer wavelet, improving the quality of the CC(t) . Subsequently, new seismic sections were generated considering a common offset. We use offsets of 100, 500, 900, 1300, 1700, and 2100 m among source-receiver virtual arrays. In this case, results were improved substantially, clearly showing the expected reflectors. We observed that the depth of investigation increases for higher offsets, meanwhile the surface resolution decreases. The sections were stacked with the different offsets mentioned above for each line, resulting in a total common offset section. Finally, the obtained sections were compared versus a conventional seismic section (also called &#8220;active&#8221; seismic sections) migrated in depth.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Sísmica pasiva]]></kwd>
<kwd lng="es"><![CDATA[interferometría sísmica]]></kwd>
<kwd lng="es"><![CDATA[Función de Green]]></kwd>
<kwd lng="es"><![CDATA[Pseudo-secciones sísmicas de tiros virtuales]]></kwd>
<kwd lng="es"><![CDATA[Transformada de ondícula]]></kwd>
<kwd lng="en"><![CDATA[Passive seismic]]></kwd>
<kwd lng="en"><![CDATA[seismic interferometry]]></kwd>
<kwd lng="en"><![CDATA[Green&#8217;s function]]></kwd>
<kwd lng="en"><![CDATA[Pseudo-sections of virtual shots]]></kwd>
<kwd lng="en"><![CDATA[Wavelet transform]]></kwd>
</kwd-group>
</article-meta>
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