<?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>S0016-71692017000100071</article-id>
<article-id pub-id-type="doi">10.19155/geofint.2017.056.1.6</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Estimation of source; path and site effects at MASE array stations: a comprehensive study]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ortiz-Alemán]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Olvera]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Iglesias-Mendoza]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco-Del-Castillo]]></surname>
<given-names><![CDATA[M.G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Gómez]]></surname>
<given-names><![CDATA[J.J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Mexicano del Petroleo  ]]></institution>
<addr-line><![CDATA[ CDMX]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Geofísica ]]></institution>
<addr-line><![CDATA[CDMX México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="A03">
<institution><![CDATA[,Instituto Politécnico Nacional Centro de Desarrollo Aeroespacial ]]></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>71</fpage>
<lpage>85</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-71692017000100071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-71692017000100071&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-71692017000100071&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: A parameterized source and path effects inversion method based on the use of global optimization techniques is presented. We applied this method on velocity data from various seismic events collected between August, 2005 and April, 2007 in Mexico by the regional MesoAmerican Subduction Experiment (MASE) seismic network and other stations from the permanent Mexican Seismological Survey Network (SSN). The source, path and site parameters corresponding to the S wave amplitude spectra of 219 velocity seismic records (162 from MASE and 57 from SSN) were estimated by means of a generalized inversion approach. The simultaneously inverted parameters from the records of 55 stations shows a significant agreement between the observed and calculated spectra, which supports their realiability. Nakamura&#8217;s method was used to compute an initial guess for the generalized inversion. Comparisons between Nakamura&#8217;s technique and parameterized source and path effects inversion by using simulated annealing method were also established. Finally, a frecuency dependent attenuation relationship for the study area was computed by using a genetic algorithm inversion approach.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En este trabajo se presenta una técnica de inversión parametrizada de los efectos de la fuente y el trayecto, basada en el empleo de métodos de optimización global. Se aplica esta técnica a los datos de velocidad correspondientes a varios eventos sísmicos registrados entre agosto de 2005 y abril de 2007 en México, por la red sísmica regional MASE (Meso American Subduction Experiment) así como por otras estaciones pertenecientes a la red permanente del Servicio Sismológico Nacional (SSN). Los parámetros de la fuente, el trayecto y el efecto de sitio, correspondientes a los espectros de amplitud para ondas S de 219 registros sísmicos de velocidad (162 pertenecientes a la red MASE y 57 a la red SSN), fueron estimados por medio de este esquema de inversión generalizada. Los parámetros invertidos simultáneamente a partir de los registros de 55 estaciones muestran un acuerdo significativo entre los espectros observados y calculados, lo cual apoya la confiabilidad de tales estimaciones. Se empleó la técnica de Nakamura para calcular una estimación inicial para la inversión generalizada. Se establecieron comparaciones entre la técnica de Nakamura y la inversión parametrizada de los efectos de la fuente y el trayecto, utilizando el método de simulated annealing. Finalmente, se calculó una nueva relación de atenuación dependiente de la frecuencia para el área de estudio, empleando un esquema de inversión basado en algoritmos genéticos.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Efectos de sitio]]></kwd>
<kwd lng="es"><![CDATA[inversion,fuente]]></kwd>
<kwd lng="es"><![CDATA[trayecto]]></kwd>
<kwd lng="es"><![CDATA[atenuación]]></kwd>
<kwd lng="es"><![CDATA[peligro sísmico]]></kwd>
<kwd lng="en"><![CDATA[Site-effects]]></kwd>
<kwd lng="en"><![CDATA[inversion]]></kwd>
<kwd lng="en"><![CDATA[source]]></kwd>
<kwd lng="en"><![CDATA[path]]></kwd>
<kwd lng="en"><![CDATA[attenuation]]></kwd>
<kwd lng="en"><![CDATA[seismic hazard]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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