<?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>0188-4611</journal-id>
<journal-title><![CDATA[Investigaciones geográficas]]></journal-title>
<abbrev-journal-title><![CDATA[Invest. Geog]]></abbrev-journal-title>
<issn>0188-4611</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional Autónoma de México, Instituto de Geografía]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0188-46112021000200103</article-id>
<article-id pub-id-type="doi">10.14350/rig.60315</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Zonificación de la amenaza por dispersión y caída de ceniza del volcán Guagua Pichincha, Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Zoning of the Threat by Dispersion and Fall of Ash From The Guagua Pichincha Volcano, Ecuador]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pavón]]></surname>
<given-names><![CDATA[Fernando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Contreras]]></surname>
<given-names><![CDATA[Diana]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Escuela Politécnica Nacional  ]]></institution>
<addr-line><![CDATA[Quito ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Instituto Panamericano de Geografía e Historia  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Newcastle University School of Engineering ]]></institution>
<addr-line><![CDATA[Newcastle ]]></addr-line>
<country>United Kingdom</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2021</year>
</pub-date>
<numero>105</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0188-46112021000200103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0188-46112021000200103&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0188-46112021000200103&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El volcán Guagua Pichincha es considerando el tercer volcán más peligroso en el Ecuador continental, y representa una amenaza potencial para la población expuesta. En esta investigación se modela, mediante un análisis estadístico de simulaciones numéricas, la dispersión y caída de ceniza al 75% de probabilidad de ocurrencia para zonificar la amenaza volcánica a través de escenarios eruptivos y datos censales con ayuda de herramientas computacionales. Así, se estimó la cantidad de población rural-urbana y categorías de uso de suelo que se verían afectadas. Estos escenarios de impacto tendrían diferentes efectos en función de los espesores máximos esperados, que van desde los 5 mm para el escenario con un índice de explosividad volcánica 2 (VEI, por sus siglas en inglés) y de 150 mm de acumulación de ceniza para el escenario con un VEI5; incrementando significativamente el número de poblados, zonas urbanas y categoría de uso de suelo afectados en cada escenario planteado. Los mapas obtenidos muestran, para el evento VEI2 (menor), siete parroquias con un impacto bajo, mientras que para el escenario VEI5 (extenso-muy extenso) se tendría un impacto alto en 33 parroquias, incluida la capital del Ecuador.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Volcanic activity in the equator is concentrated in the continental volcanic arc of the central-north portion of the Andes resulting from the subduction of the Nazca plate underneath the South American plate. This produces a high risk, evidenced in recent decades as an increased volcanic activity and a high impact on the population - especially those in poverty and extreme poverty - and on the country&#8217;s economy. The Guagua Pichincha volcano developed in three periods during the late Pleistocene and Holocene; together with the Rucu Pichincha, it forms the Pichincha volcanic complex. This complex recorded its latest eruption between 1999 and 2001 through the Crystal Dome with vulcanian-subplinian explosions. Guagua Pichincha is considered the third most dangerous volcano in continental Ecuador, posing a threat mainly to vulnerable rural population settled in areas close to the volcano and dedicated to agriculture and livestock raising. This research has used general parameters such as height of the eruptive column, duration of the eruption, volume of magma, and a statistical distribution of wind profiles. We obtained four eruption events that are consistent with events that occurred in the past recorded by several authors. Using a statistical analysis, we modeled 120 numerical simulations per event with the Ash 3D code. Using algorithms produced with digital tools, the dispersal and fall of ash was defined under a 75% probability of occurrence for the period 2008 - 2017, for zoning volcanic threat through the eruptive scenarios suggested. Census data of the 15 indicators (eight for vulnerability and seven for resilience) for the year 2010 were processed separately. As a result, we obtained a cover with parochial disaggregation at country level using the weights assigned in the Index for Risk Management (INFORM) methodology. Following this procedure, we estimated the magnitudes of rural-urban population and land-use categories that would be affected by using spatial analysis and automation processes through Phyton programming. Impact scenarios would have different effects according to the maximum expected thickness values estimated. The lower limit of the range is 5 mm assuming the most frequent scenario within the yearly eruptive cycle, with a volcanic explosiveness index (VEI) of 2; the upper limit is 150 mm of ash accumulation in a scenario with a VEI5, which occurs every 25 eruptive cycles and has been recorded every 2,500-21,250 years; the latter involves a significant increase in the number of villages, urban areas and, land-use categories affected. The maps obtained show the following. 1) For the VEI2 (minor) event, some 23,435 hectares dedicated to agriculture would be directly affected by the different ash thicknesses, representing one parish with moderate impact and seven parishes with low impact; for this scenario, the experience derived from the latest activity event recorded may be used to quantify the potential impact of the Guagua Pichincha volcano in the country. 2) A VEI3 (moderate) event, which occurs with a frequency between one and two events within an eruptive cycle, would result in 1,101,847 ha of farming land directly affected by ash fall, with thicknesses reaching 45 mm; 20 parishes would have a high impact, 119 parishes a moderate impact, and 78 parishes a low impact. 3) For a major event (VEI4) of the Guagua Pichincha volcano, which occurs every three to five eruptive cycles, recorded every 300-4,250 years, the expected ash thicknesses would range between 0.01 mm and 90 mm, affecting 1,130,405 ha of farmland; 98 parishes would suffer moderate impact and 66 low impact; a total of 4,240,559 inhabitants would be directly affected. 4) For scenario VEI5, 1,899,861 ha of farming land would be directly affected, including 33 parishes with a high impact, 235 parishes with moderate impact and 139 with a low impact. A VEI5 event would affect 30% of the population of Ecuador.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Guagua Pichincha]]></kwd>
<kwd lng="es"><![CDATA[depósitos de caída de ceniza]]></kwd>
<kwd lng="es"><![CDATA[zonificación de amenaza]]></kwd>
<kwd lng="es"><![CDATA[SIG]]></kwd>
<kwd lng="es"><![CDATA[Ecuador]]></kwd>
<kwd lng="en"><![CDATA[Guagua Pichincha]]></kwd>
<kwd lng="en"><![CDATA[ash deposits]]></kwd>
<kwd lng="en"><![CDATA[threat zoning]]></kwd>
<kwd lng="en"><![CDATA[GIS]]></kwd>
<kwd lng="en"><![CDATA[Ecuador]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Andrade]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Hall]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Mothes]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Troncoso]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Eissen]]></surname>
<given-names><![CDATA[J.-P.]]></given-names>
</name>
<name>
<surname><![CDATA[Samaniego]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Egred]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Ramón]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Rivero]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Yepes]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[Los peligros volcánicos asociados con el Cotopaxi]]></source>
<year>2005</year>
<publisher-loc><![CDATA[Quito ]]></publisher-loc>
<publisher-name><![CDATA[Corporación Editora Nacional, CEN / Escuela Politécnica Nacional. Instituto Geofísico, IG / Institut de Recherche pour le Développement, IRD]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bernard]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Andrade]]></surname>
<given-names><![CDATA[S. D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Volcanes Cuaternarios del Ecuador Continental-Instituto Geofísico-EPN]]></source>
<year>2011</year>
<publisher-name><![CDATA[IRD-IGEPN]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bernard]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Pavón]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Samaniego]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Encalada]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Vásconez]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Andrade]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<source><![CDATA[Actualización del mapa de peligros por caída piroclástica para el volcán Cayambe]]></source>
<year>2017</year>
<publisher-name><![CDATA[Instituto Geofísico de la Escuela Politécnica Nacional]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Bernard]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Santamaría]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Encalada]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Telenchana]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
</person-group>
<source><![CDATA[Estudio técnico para la construcción de escenarios de impacto y territorialización de la amenaza ante dispersión y caída de ceniza en el Ecuador]]></source>
<year>2018</year>
<publisher-name><![CDATA[Instituto Geofísico de la Escuela Politécnica Nacional]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carey]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Modeling of Tephra Fallout from Explosive Eruptions]]></source>
<year>1996</year>
<page-range>429-61</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carey]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Sigurdsson]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Influence of particle aggregation on deposition of distal tephra from the May 18, 1980, eruption of Mount St. Helens volcano]]></article-title>
<source><![CDATA[Journal of Geophysical Research: Solid Earth]]></source>
<year>1982</year>
<volume>87</volume>
<numero>B8</numero>
<issue>B8</issue>
<page-range>7061-72</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Contreras]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Volcán Galeras Hábitat en Riesgo]]></article-title>
<source><![CDATA[Revista de Arquitectura El Cable]]></source>
<year>2006</year>
<volume>5</volume>
<page-range>90 a 94-90 94</page-range></nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Contreras]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Chamorro]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Wilkinson]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Review article: The spatial dimension in the assessment of urban socio-economic vulnerability related to geohazards]]></article-title>
<source><![CDATA[Natural Hazards and Earth System Sciences]]></source>
<year>2020</year>
<volume>20</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>1663-87</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[D&#8217;Ercole]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Metzger]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[La vulnérabilité de Quito (Equateur) face à l&#8217;activité du Guagua Pichincha. Les premières leçons d&#8217;une crise volcanique durable]]></article-title>
<source><![CDATA[Cahiers Savoisiens de Géographie]]></source>
<year>2000</year>
<volume>1</volume>
<page-range>39-52</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="book">
<collab>EIRD</collab>
<collab>ONU</collab>
<collab>Naciones Unidas</collab>
<source><![CDATA[Vivir con el riesgo: Informe mundial sobre iniciativas para la reducción de desastres]]></source>
<year>2004</year>
<publisher-name><![CDATA[Naciones Unidas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B11">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Eychenne]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Le Pennec]]></surname>
<given-names><![CDATA[J.-L.]]></given-names>
</name>
<name>
<surname><![CDATA[Troncoso]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Gouhier]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Nedelec]]></surname>
<given-names><![CDATA[J.-M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Causes and consequences of bimodal grain-size distribution of tephra fall deposited during the August 2006 Tungurahua eruption (Ecuador)]]></article-title>
<source><![CDATA[Bulletin of Volcanology]]></source>
<year>2011</year>
<volume>74</volume>
<page-range>187-205</page-range></nlm-citation>
</ref>
<ref id="B12">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Gaunt]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Bernard]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Hidalgo]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Proaño]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Wright]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<name>
<surname><![CDATA[Mothes]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Criollo]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Kueppers]]></surname>
<given-names><![CDATA[U.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Juvenile magma recognition and eruptive dynamics inferred from the analysis of ash time series: The 2015 reawakening of Cotopaxi volcano]]></article-title>
<source><![CDATA[Journal of Volcanology and Geothermal Research]]></source>
<year>2016</year>
<volume>328</volume>
</nlm-citation>
</ref>
<ref id="B13">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hall]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Robin]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Mothes]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Monzier]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Tungurahua Volcano, Ecuador: Structure, eruptive history and hazards]]></article-title>
<source><![CDATA[Journal of Volcanology and Geothermal Research]]></source>
<year>1999</year>
<volume>91</volume>
<page-range>1-21</page-range></nlm-citation>
</ref>
<ref id="B14">
<nlm-citation citation-type="">
<collab>IGEPN</collab>
<collab>E. P. N.</collab>
<source><![CDATA[Volcán Guagua Pichincha Resumen Anual de Actividad 2003]]></source>
<year>2003</year>
</nlm-citation>
</ref>
<ref id="B15">
<nlm-citation citation-type="">
<collab>IGEPN</collab>
<collab>E. P. N.</collab>
<source><![CDATA[Informe Especial del Volcán El Reventador N° 1-2007]]></source>
<year>2007</year>
</nlm-citation>
</ref>
<ref id="B16">
<nlm-citation citation-type="">
<collab>IGEPN</collab>
<collab>E. P. N.</collab>
<source><![CDATA[Informe Especial del Volcán Cotopaxi N° 3-2015]]></source>
<year>2015</year>
</nlm-citation>
</ref>
<ref id="B17">
<nlm-citation citation-type="">
<collab>IGEPN</collab>
<collab>E. P. N.</collab>
<source><![CDATA[Informe Especial del Volcán Guagua Pichincha N° 6-2015]]></source>
<year>2015</year>
</nlm-citation>
</ref>
<ref id="B18">
<nlm-citation citation-type="">
<collab>IGEPN</collab>
<collab>E. P. N.</collab>
<source><![CDATA[Informe Especial del Volcán El Reventador N° 1-2020]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B19">
<nlm-citation citation-type="">
<collab>IGEPN</collab>
<collab>E. P. N.</collab>
<source><![CDATA[Informe Especial del Volcán Sangay N° 3-2020]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B20">
<nlm-citation citation-type="">
<collab>IGEPN</collab>
<collab>IGM</collab>
<collab>IRD</collab>
<source><![CDATA[Mapa de Peligros Volcánicos Potenciales del Volcán Guagua Pichincha]]></source>
<year>2019</year>
<edition>3</edition>
</nlm-citation>
</ref>
<ref id="B21">
<nlm-citation citation-type="">
<collab>IGM</collab>
<collab>I. G. M.</collab>
<source><![CDATA[Cartografía básica oficial escala 1: 5 000]]></source>
<year>2016</year>
</nlm-citation>
</ref>
<ref id="B22">
<nlm-citation citation-type="">
<collab>IGM</collab>
<collab>I. G. M.</collab>
<source><![CDATA[Ortofoto 1: 5 000 del volcán Guagua Pichincha]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B23">
<nlm-citation citation-type="">
<collab>INEC</collab>
<source><![CDATA[VII Censo de Población y VI de Vivienda]]></source>
<year>2010</year>
</nlm-citation>
</ref>
<ref id="B24">
<nlm-citation citation-type="">
<collab>INFORM</collab>
<source><![CDATA[INFORM Risk Index 2021]]></source>
<year>2020</year>
</nlm-citation>
</ref>
<ref id="B25">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Jenkins]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Wilson]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
<name>
<surname><![CDATA[Magill]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Miller]]></surname>
<given-names><![CDATA[V.]]></given-names>
</name>
<name>
<surname><![CDATA[Stewart]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Blong]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Marzocchi]]></surname>
<given-names><![CDATA[W.]]></given-names>
</name>
<name>
<surname><![CDATA[Boulton]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Bonadonna]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<source><![CDATA[Volcanic ash fall hazard and risk]]></source>
<year>2015</year>
<page-range>173-221</page-range></nlm-citation>
</ref>
<ref id="B26">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Le Pennec]]></surname>
<given-names><![CDATA[J.-L.]]></given-names>
</name>
<name>
<surname><![CDATA[de Saulieu]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Samaniego]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Gailler]]></surname>
<given-names><![CDATA[L.-S.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A devastating plinian eruption at Tungurahua volcano reveals formative occupation at similar to 1100 CAL BC in Central Equador]]></article-title>
<source><![CDATA[Radiocarbon]]></source>
<year>2013</year>
<volume>55</volume>
<page-range>1199-214</page-range></nlm-citation>
</ref>
<ref id="B27">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Longley]]></surname>
<given-names><![CDATA[P. A.]]></given-names>
</name>
<name>
<surname><![CDATA[Goodchild]]></surname>
<given-names><![CDATA[M. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Maguire]]></surname>
<given-names><![CDATA[D. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Rhind]]></surname>
<given-names><![CDATA[D. W.]]></given-names>
</name>
</person-group>
<source><![CDATA[Geographic Information Systems and Science]]></source>
<year>2005</year>
<publisher-name><![CDATA[John Wiley &amp; Sons, Ltd]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B28">
<nlm-citation citation-type="">
<collab>M. de A., Ganadería, Acuacultura y Pesca</collab>
<source><![CDATA[Cobertura y uso de la Tierra de Ecuador Continental 1: 100 000]]></source>
<year>2014</year>
</nlm-citation>
</ref>
<ref id="B29">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mastin]]></surname>
<given-names><![CDATA[L. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Guffanti]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Servranckx]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Webley]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Barsotti]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Dean]]></surname>
<given-names><![CDATA[K.]]></given-names>
</name>
<name>
<surname><![CDATA[Durant]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Ewert]]></surname>
<given-names><![CDATA[J. W.]]></given-names>
</name>
<name>
<surname><![CDATA[Neri]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Rose]]></surname>
<given-names><![CDATA[W. I.]]></given-names>
</name>
<name>
<surname><![CDATA[Schneider]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Siebert]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
<name>
<surname><![CDATA[Stunder]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Swanson]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Tupper]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Volentik]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<name>
<surname><![CDATA[Waythomas]]></surname>
<given-names><![CDATA[C. F.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[A multidisciplinary effort to assign realistic source parameters to models of volcanic ash-cloud transport and dispersion during eruptions]]></article-title>
<source><![CDATA[Journal of Volcanology and Geothermal Research]]></source>
<year>2009</year>
<volume>186</volume>
<numero>1-2</numero>
<issue>1-2</issue>
<page-range>10-21</page-range></nlm-citation>
</ref>
<ref id="B30">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Mastin]]></surname>
<given-names><![CDATA[L. G.]]></given-names>
</name>
<name>
<surname><![CDATA[Randall]]></surname>
<given-names><![CDATA[M. J.]]></given-names>
</name>
<name>
<surname><![CDATA[Schwaiger]]></surname>
<given-names><![CDATA[H. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Denlinger]]></surname>
<given-names><![CDATA[R. P.]]></given-names>
</name>
</person-group>
<source><![CDATA[User&#8217;s guide and reference to Ash3d-A three-dimensional model for Eulerian atmospheric tephra transport and deposition: U.S. Geological Survey Open-File Report 2013-1122]]></source>
<year>2013</year>
</nlm-citation>
</ref>
<ref id="B31">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Monzier]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Samaniego]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Robin]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Beate]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Cotten]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
<name>
<surname><![CDATA[Hall]]></surname>
<given-names><![CDATA[M. L.]]></given-names>
</name>
<name>
<surname><![CDATA[Mothes]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Andrade]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Bourdon]]></surname>
<given-names><![CDATA[E.]]></given-names>
</name>
<name>
<surname><![CDATA[Eissen]]></surname>
<given-names><![CDATA[J.-P.]]></given-names>
</name>
<name>
<surname><![CDATA[Le Pennec]]></surname>
<given-names><![CDATA[J.-L.]]></given-names>
</name>
<name>
<surname><![CDATA[Ruiz]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<name>
<surname><![CDATA[Toulkeridis]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[Evolution of the Pichincha volcanic complex (Ecuador)]]></source>
<year>2002</year>
</nlm-citation>
</ref>
<ref id="B32">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Parra]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<name>
<surname><![CDATA[Bernard]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Narváez]]></surname>
<given-names><![CDATA[D. F.]]></given-names>
</name>
<name>
<surname><![CDATA[Le Pennec]]></surname>
<given-names><![CDATA[J.-L.]]></given-names>
</name>
<name>
<surname><![CDATA[Hasselle]]></surname>
<given-names><![CDATA[N.]]></given-names>
</name>
<name>
<surname><![CDATA[Folch]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Eruption Source Parameters for forecasting ash dispersion and deposition from vulcanian eruptions at Tungurahua volcano: Insights from field data from the July 2013 eruption]]></article-title>
<source><![CDATA[Journal of Volcanology and Geothermal Research]]></source>
<year>2016</year>
<volume>309</volume>
<page-range>1-13</page-range></nlm-citation>
</ref>
<ref id="B33">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pavón]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
</person-group>
<source><![CDATA[Análisis del impacto socioeconómico de los lahares y caída de ceniza ante una eventual erupción del volcán Cayambe en la actividad florícola en los cantones de Cayambe y Pedro Moncayo]]></source>
<year>2017</year>
<publisher-name><![CDATA[Escuela Politécnica Nacional]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B34">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Pavón]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<name>
<surname><![CDATA[Andrade]]></surname>
<given-names><![CDATA[S. D.]]></given-names>
</name>
<name>
<surname><![CDATA[Bernard]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Contreras]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Impacto socioeconómico por lahares y caída de ceniza ante la erupción del volcán Cayambe en la actividad florícola en Cayambe y Pedro Moncayo]]></article-title>
<source><![CDATA[Revista Cartográfica]]></source>
<year>2019</year>
<volume>98</volume>
<page-range>123-43</page-range></nlm-citation>
</ref>
<ref id="B35">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Robin]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Samaniego]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Le Pennec]]></surname>
<given-names><![CDATA[J.-L.]]></given-names>
</name>
<name>
<surname><![CDATA[Fornari]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<name>
<surname><![CDATA[Mothes]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Plicht]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[New radiometric and petrological constraints on the evolution of the Pichincha volcanic complex (Ecuador)]]></article-title>
<source><![CDATA[Bulletin of Volcanology]]></source>
<year>2010</year>
<volume>72</volume>
<page-range>1109-29</page-range></nlm-citation>
</ref>
<ref id="B36">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Robin]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<name>
<surname><![CDATA[Samaniego]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[Le Pennec]]></surname>
<given-names><![CDATA[J.-L.]]></given-names>
</name>
<name>
<surname><![CDATA[Mothes]]></surname>
<given-names><![CDATA[P.]]></given-names>
</name>
<name>
<surname><![CDATA[van der Plicht]]></surname>
<given-names><![CDATA[J.]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Late Holocene phases of dome growth and Plinian activity at Guagua Pichincha volcano (Ecuador)]]></article-title>
<source><![CDATA[Journal of Volcanology and Geothermal Research]]></source>
<year>2008</year>
<volume>176</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>7-15</page-range></nlm-citation>
</ref>
<ref id="B37">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Santamaría]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
<name>
<surname><![CDATA[Bernard]]></surname>
<given-names><![CDATA[B.]]></given-names>
</name>
<name>
<surname><![CDATA[Hidalgo]]></surname>
<given-names><![CDATA[S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Análisis de la frecuencia de erupciones explosivas en el arco volcánico ecuatoriano durante el Holoceno]]></source>
<year>2017</year>
</nlm-citation>
</ref>
<ref id="B38">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Suzuki]]></surname>
<given-names><![CDATA[T.]]></given-names>
</name>
</person-group>
<source><![CDATA[A theoretical model for dispersion of tephra. In: Shimozuru D, Yokoyama I (eds) Arc Volcanism: Physics and Tectonics. Proceedings of a IAVCEI Symposium, August-September 1981]]></source>
<year>1983</year>
<publisher-name><![CDATA[Terra Scientific Publishing Company (TERRAPUB)]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B39">
<nlm-citation citation-type="">
<collab>The World Bank</collab>
<source><![CDATA[Disaster risk management in Latin America and the Caribbean Region: GFDRR country notes-Ecuador]]></source>
<year>2012</year>
</nlm-citation>
</ref>
<ref id="B40">
<nlm-citation citation-type="book">
<collab>UNISDR</collab>
<source><![CDATA[Evaluación Global sobre la Reducción del Riesgo de Desastres. Hacia el desarrollo sostenible: El futuro de la gestión del riesgo de desastres]]></source>
<year>2015</year>
<publisher-name><![CDATA[Naciones Unidas]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B41">
<nlm-citation citation-type="">
<collab>Washington VAAC, V. A. A.</collab>
<source><![CDATA[Guagua Pichincha Ecuador]]></source>
<year>1999</year>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
