<?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>2007-2422</journal-id>
<journal-title><![CDATA[Tecnología y ciencias del agua]]></journal-title>
<abbrev-journal-title><![CDATA[Tecnol. cienc. agua]]></abbrev-journal-title>
<issn>2007-2422</issn>
<publisher>
<publisher-name><![CDATA[Instituto Mexicano de Tecnología del Agua, Coordinación de Comunicación, Participación e Información]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-24222017000100035</article-id>
<article-id pub-id-type="doi">10.24850/j-tyca-2017-01-03</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Análisis de sequías meteorológicas en la cuenca del río Fuerte, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Analysis of meteorological drought in the Fuerte River Basin, Mexico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castillo-Castillo]]></surname>
<given-names><![CDATA[Mónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ibáñez-Castillo]]></surname>
<given-names><![CDATA[Laura A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Valdés]]></surname>
<given-names><![CDATA[Juan B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arteaga-Ramírez]]></surname>
<given-names><![CDATA[Ramón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-Peña]]></surname>
<given-names><![CDATA[Mario A.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Chapingo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,The University of Arizona  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>USA</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Autónoma Chapingo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>02</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>02</month>
<year>2017</year>
</pub-date>
<volume>8</volume>
<numero>1</numero>
<fpage>35</fpage>
<lpage>52</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-24222017000100035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-24222017000100035&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-24222017000100035&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: En este trabajo se realiza un análisis temporal y espacial de la sequía en la cuenca del río Fuerte para el periodo de 1961 a 2012. La cuenca del río Fuerte se ubica al noroeste de México, en la zona de baja presión, donde coinciden en latitud los grandes desiertos del mundo; en la parte alta de la cuenca viven diversos grupos indígenas en condiciones de pobreza y en la parte baja se ubica una zona agrícola bajo riego muy importante. Se calcularon dos índices de sequía: (1) el Índice Estandarizado de Precipitación (SPI) y (2) el Índice Estandarizado de Precipitación-Evapotranspiración (SPEI); ambos índices fueron calculados en 14 estaciones del área de estudio para escalas de 3, 6, 12 y 24 meses. Se utilizaron datos de precipitación, y temperatura mínima y máxima para el cálculo. Los índices fueron calculados y analizados temporal y espacialmente. Los resultados mostraron que las sequías han alterado su patrón de ocurrencia y se presentan con mayor frecuencia, intensidad y duración en las últimas décadas. Se encontraron dos periodos de sequías extremas: de 1999 a 2004 y de 2011 en adelante. El SPEI define mejor los periodos secos y presenta un comportamiento más estable que el SPI, además muestra una tendencia más clara del aumento en la intensidad de la sequía en los últimos años, producto de la reducción de la precipitación y el aumento de las temperaturas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: In this research is presented a temporal and spatial analysis of drought in the Fuerte River Basin for the period 1961 to 2012. The Fuerte River Basin is located Northwest of México, in the area of low pressure which match the great deserts of the world; in the high basin several Indian populations are located and in the low part is located an important irrigation farming area. Two index were calculated: (1) the Standardized Precipitation Index (SPI), and, (2) Standardized Precipitation Evapotranspiration Index (SPEI); both index were calculated in 14 stations of the study area for scales of 3, 6, 12 and 24 months. Data of precipitation, minimum and maximum temperatures were used for the index calculation. The indices were calculated and analyzed in time and space. Results showed that droughts have altered its occurrence patterns and presents with more frequency, intensity and duration in the last decades. It was found two periods with extremes droughts, from 1999 to 2004 and from 2011 onwards. SPEI defines drought periods better and presents a behavior more stable than SPI, moreover shows a clear trend of increase in drought intensity in recent years as a result of reduction on precipitation and increase of temperatures.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[SPI]]></kwd>
<kwd lng="es"><![CDATA[SPEI]]></kwd>
<kwd lng="es"><![CDATA[escala temporal]]></kwd>
<kwd lng="es"><![CDATA[análisis temporal y espacial de sequías]]></kwd>
<kwd lng="en"><![CDATA[SPI]]></kwd>
<kwd lng="en"><![CDATA[SPEI]]></kwd>
<kwd lng="en"><![CDATA[temporal and spatial drought analysis]]></kwd>
</kwd-group>
</article-meta>
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