<?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>0256-7024</journal-id>
<journal-title><![CDATA[Revista Geológica de América Central]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Geol. Amér. Central]]></abbrev-journal-title>
<issn>0256-7024</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0256-70242017000200097</article-id>
<article-id pub-id-type="doi">10.15517/rgac.v0i57.30150</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio de denudación en piroclastos Tierra Blanca joven dentro El Área Metropolitana de San Salvador]]></article-title>
<article-title xml:lang="en"><![CDATA[Denudation study in Tierra Blanca joven pyroclasts within The Metropolitan Area of San Salvador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vásquez]]></surname>
<given-names><![CDATA[Mauricio E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chavez]]></surname>
<given-names><![CDATA[José A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gracias]]></surname>
<given-names><![CDATA[Fabio E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Oficina de Planificación del Área Metropolitana de San Salvador  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2017</year>
</pub-date>
<numero>57</numero>
<fpage>97</fpage>
<lpage>120</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0256-70242017000200097&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0256-70242017000200097&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0256-70242017000200097&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[ResumenProblemas severos de denudación se observan en los piroclastos Tierra Blanca Joven dentro del Área Metropolitana de San Salvador, afectando infraestructura y proyectos urbanísticos. Esto conlleva a que sean necesarias obras de mitigación de manera constante. Para conocer el comportamiento y características de este material, se inicio un monitoreo por reconocimiento de cambios de erosión y sedimentación, instalando en algunos sectores de la cuenca del Río las Cañas varillas de 3/8 de pulgadas. Con la ayuda de sensores remotos se identificaron cambios históricos en los drenajes. Para esta zona se obtuvo un mapa de susceptibilidad de erosión con la Ecuación Universal de la Perdida de Suelo. Los resultados muestran la importancia e influencia de factores climáticos, tectónicos, acciones antrópicas y cambios del nivel base de los drenajes. Esto puede servir para criterios de estudios y zonas de protección. El monitoreo probo ser una herramienta útil que tiene que ser reforzada.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[AbstractSevere problems of denudation are happening in Tierra Blanca Joven pyroclasts within the Metropolitan Area of San Salvador, affecting infrastructure and housing projects. This leads to necessary and constant mitigation works. To understand the behavior and characteristics of these pyroclasts a monitoring program began. This was made through the installation in some sectors of 3/8 inch rods to recognize changes of erosion and sedimentation. With the help of remote sensors, historical changes were identified in the drainages. For this area a map of erodibility with the Universal Equation of Soil Loss was obtained. The results show the importance and influence of climatic factors, tectonic, human actions and changes of the base level of drainage. This can be used to build criteria for research and propose protection zones in the river drainage system. The monitoring probes to be useful and is necessary to improve it.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[piroclastos]]></kwd>
<kwd lng="es"><![CDATA[erosión]]></kwd>
<kwd lng="es"><![CDATA[movimientos de ladera]]></kwd>
<kwd lng="es"><![CDATA[monitoreo]]></kwd>
<kwd lng="es"><![CDATA[sensor remoto]]></kwd>
<kwd lng="es"><![CDATA[cárcava]]></kwd>
<kwd lng="en"><![CDATA[pyroclasts]]></kwd>
<kwd lng="en"><![CDATA[erosion]]></kwd>
<kwd lng="en"><![CDATA[landslide]]></kwd>
<kwd lng="en"><![CDATA[monitoring]]></kwd>
<kwd lng="en"><![CDATA[remote sensor]]></kwd>
<kwd lng="en"><![CDATA[gully]]></kwd>
</kwd-group>
</article-meta>
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