Minard L. Hall, Claude Robin, Bernardo Beate, Patricia Mothes, Michel Monzier,
Tungurahua, one of Ecuador's most active volcanoes, is made up of three volcanic edifices. Tungurahua I was a 14-km-wide andesitic stratocone ... by the extrusion of a dacite lava series. Tungurahua II, mainly composed of acid andesite lava flows ... flow. The eruptive activity of the present volcano (Tungurahua III) has rebuilt the cone to about 50% ... products. Two periods of construction are recognized in Tungurahua's III history. From ∼2300 to ∼1400 years ... 1918. Given good age control and volumetric considerations, Tungurahua III growth's rate is estimated at ∼1. ...
Tópico(s): Cryospheric studies and observations
1999 - Elsevier BV | Journal of Volcanology and Geothermal Research
Simon Warnach, Nicole Bobrowski, Silvana Hidalgo, Santiago Arellano, Holger Sihler, Florian Dinger, Peter Lübcke, Jean Battaglia, Alexander Steele, Bo Galle, U. Platt, Thomas Wagner,
... SO2) molar ratio in the volcanic plume of Tungurahua volcano and study the relation to volcanic activity. ... nearly continuous eruptive activity from 1999 to 2008, Tungurahua showed alternating phases of eruptive activity separated by ... molar ratios collected from 13 eruptive phases at Tungurahua volcano during 10 years of continuous observations. For ... model of the volcanic processes taking place at Tungurahua during the eruptive phases. Our data furthermore indicates ... the active part of the volcanic system of Tungurahua. This study shows that long-term BrO/SO2 ...
Tópico(s): Geochemistry and Geologic Mapping
2019 - Frontiers Media | Frontiers in Earth Science
Minard L. Hall, Alexander Steele, Patricia Mothes, Mario Ruiz,
Tungurahua, located in the Eastern Cordillera of the Ecuadorian Andes, is a 5023 m-high active volcano, ... and frequent eruptive cycles. From 1999 until 2006 Tungurahua experienced short periods of low to moderate strombolian ... debris flows, and no PDC events. Without warning, Tungurahua initiated PDC activity on 15–16 July 2006, ... the focus of this study. Continuous monitoring of Tungurahua has employed seismic (both short period and broadband ( ... SW, as well as by infrasound sensors at Tungurahua's BB seismic stations. Based on geophysical parameters, ...
Tópico(s): Seismic Waves and Analysis
2013 - Elsevier BV | Journal of Volcanology and Geothermal Research
David Fee, Milton Garcés, Andrea Steffke,
Strombolian to Plinian activity from Tungurahua Volcano, Ecuador has been recorded by the autonomous infrasound arrays of the Acoustic Surveillance for Hazardous Eruptions (ASHE) project since early ... manuscript provides a detailed chronology and characterization of Tungurahua's eruptive activity between 2006 and 2008 and ... volcanic explosions at an array 37 km from Tungurahua and was successful at notifying the onset, escalation, ... min. Elevated infrasonic energy from sustained and intense Tungurahua eruptions correlates well with ash column heights and ...
Tópico(s): Tropical and Extratropical Cyclones Research
2010 - Elsevier BV | Journal of Volcanology and Geothermal Research
Jean‐Luc Le Pennec, D. Jaya, Pablo Samaniego, Patricio Ramón, S. Moreno Yánez, José Egred, J. van der Plicht,
Tungurahua is a frequently active and hazardous volcano of the Ecuadorian Andes that has experienced pyroclastic flow- ... repeatedly since ~ 700 14C yr BP, when the Tungurahua region was already populated. Radiocarbon ages averaging around ... western flanks of the edifice. The fact that Tungurahua was known by the Puruhás Indians as a ... findings reveal that the eruption recurrence rate at Tungurahua is at least one pyroclastic flow-forming event ... has occurred repeatedly in the past millennium at Tungurahua. Such small-volume collapse events represent a previously ...
Tópico(s): Geological and Geochemical Analysis
2008 - Elsevier BV | Journal of Volcanology and Geothermal Research
Patricia Mothes, Hugo Yépes, Minard L. Hall, Patricio Ramón, Alexander Steele, Mario Ruiz,
The successful handling of Tungurahua’s frequent eruptions during 15 years via permanent instrumental monitoring and good community relations by the Instituto Geofísico of the ... due to these factors: 1./ Instrumental monitoring of Tungurahua volcano by the IGEPN started a decade before ... 3./ The permanent presence of IGEPN scientists at Tungurahua’s Volcano Observatory (OVT) who oversee the monitoring ... in response to our instrumental monitoring activity of Tungurahua, providing credible information to the public and authorities ...
Tópico(s): Public Relations and Crisis Communication
2015 - BioMed Central | Journal of Applied Volcanology
Silvana Hidalgo, Jean Battaglia, Santiago Arellano, Alexander Steele, Benjamin Bernard, Julie Bourquin, Bo Galle, S. Arrais, Freddy Vásconez,
We present continuous SO2 measurements performed at Tungurahua volcano with a permanent network of 4 scanning DOAS instruments between 2007 and 2013. The volcano has been erupting since September 1999, but ... SO2 mass. Since measurement time is constant at Tungurahua the "observed" amounts can be expressed in tons ... 109 kg) of SO2 has been released by Tungurahua during the study period, with 95% of these ... The first case is becoming more frequent at Tungurahua making the volcano more dangerous and less predictable.
Tópico(s): Atmospheric Ozone and Climate
2015 - Elsevier BV | Journal of Volcanology and Geothermal Research
Craig M. Kauffman, Pamela L. Martin,
... development? This article explores watershed management reform in Tungurahua, Ecuador, to analyze how local communities challenged the ... create an alternative program rooted in indigenous norms. Tungurahua’s indigenous communities labeled their effort Mushuk Yuyay ( ... human presence through conservation. In this study of Tungurahua’s watershed management reform, we show how the ... kawsay was institutionalized and put into practice. The Tungurahua case demonstrates the signiacance of historically marginalized indigenous ...
Tópico(s): Politics and Society in Latin America
2014 - The MIT Press | Global Environmental Politics
J-L Le Pennec, Geoffroy de Saulieu, Pablo Samaniego, D. Jaya, Lydie Gailler,
... the first documentation of Formative age occupation around Tungurahua Volcano, 120 km SW of Quito, and show ... and geochronologic analyses reveal that the steep-sloped Tungurahua edifice suffered a major Late Holocene flank failure. ... features from site to site. The material from Tungurahua shares affinities with the Cotocollao tradition, which developed ... that the ∼1100 cal BC Plinian eruption of Tungurahua Volcano is among the oldest known volcanic disasters ...
Tópico(s): Geology and Paleoclimatology Research
2013 - Cambridge University Press | Radiocarbon
Andrew Bell, Stephen Hernández, Elizabeth Gaunt, Patricia Mothes, Mario Ruiz, Daniel Sierra, Santiago Aguaiza,
... degradation of drumbeat LP seismicity at the andesitic Tungurahua volcano, Ecuador, in April 2015. The signals were ... and are the first to be reported at Tungurahua during the ongoing 17 yrs of eruption. Following ... of drumbeat LP earthquakes, and suggest that at Tungurahua they result from gas flux and rapid depressurization ...
Tópico(s): Geological and Geochemical Analysis
2017 - Elsevier BV | Earth and Planetary Science Letters
Pablo Pomboza-Tamaquiza, Ricardo Guerrero‐López, Deysi Guevara-Freire, Verónica Elizabeth Rivera,
... y la autosuficiencia de maíz y soya, en Tungurahua-Ecuador. Metodología: se realizaron entrevistas a noventa avicultores ... Acumulada y autosuficiencia y dependencia alimentaria. Resultados: en Tungurahua el 78% de avicultores se dedican a la ... maíz y soya utilizado por la avicultura de Tungurahua, procede de otras provincias e importaciones internacionales. Entre ...
Tópico(s): Rabbits: Nutrition, Reproduction, Health
2018 - Research Center for Food and Development A.C. | Estudios Sociales Revista de Alimentación Contemporánea y Desarrollo Regional
François Nauret, Pablo Samaniego, Marie-Anne Ancellin, Pierre‐Yves Tournigand, Jean‐Luc Le Pennec, Ivan Vlastelić, Abdelmouhcine Gannoun, Silvana Hidalgo, Pierre Schiano,
... relationship between andesites and dacites, we focus on Tungurahua volcano, located in the Ecuadorian Andes. We collected ... 3 different components are required to explain the Tungurahua compositional and isotope variation: one corresponds to the ... a model of the magmatic plumbing system beneath Tungurahua, consistent with geophysical and experimental petrology constraints. We ...
Tópico(s): Geochemistry and Geologic Mapping
2017 - Elsevier BV | Journal of Volcanology and Geothermal Research
Jürgen Neuberg, Amy Collinson, Patricia Mothes, Mario Ruiz, Santiago Aguaiza,
... by an instrument in the summit area of Tungurahua volcano in Ecuador, however, show an intriguing and ... carry the potential to forecast Vulcanian explosions on Tungurahua, we use numerical modelling and reproduce the observed ... to generate a tilt signal as observed on Tungurahua. Furthermore, we address the interdependence of tilt and ...
Tópico(s): Seismic Waves and Analysis
2017 - Elsevier BV | Earth and Planetary Science Letters
H. D. Ortiz, J. B. Johnson, Patricio G. Ramón, Mario Ruiz,
... use infrasound waves generated during eruptions of Volcán Tungurahua (Ecuador) to study both, changing atmospheric conditions and ... correlation to quantify the recurrent eruptive behavior of Tungurahua and results are corroborated by reports from the ... invert for average air temperatures and winds in Tungurahua's vicinity (< 6.5 km) and find evidence ...
Tópico(s): Climate variability and models
2017 - Elsevier BV | Journal of Volcanology and Geothermal Research
René Parra, Benjamin Bernard, Diego Narváez, Jean‐Luc Le Pennec, Nathalie Hasselle, Arnau Folch,
Tungurahua volcano, located in the central area of the Ecuadorian Sierra, is erupting intermittently since 1999 alternating ... the surrounding area. After two months of quiescence, Tungurahua erupted violently on 14th July 2013 generating short- ... dispersion and deposition from future vulcanian eruptions at Tungurahua. This set of pre-defined ESP was further ...
Tópico(s): Atmospheric chemistry and aerosols
2015 - Elsevier BV | Journal of Volcanology and Geothermal Research
Brendan McCormick Kilbride, Michael Herzog, Jian Yang, Marie Edmonds, Tamsin A. Mather, Simon Carn, Silvana Hidalgo, B. Langmann,
... between mean emissions reported by each technique from Tungurahua volcano, Ecuador, during late 2007. Numerical simulations of postemission processing and dispersal of Tungurahua's SO 2 emissions enable more effective comparison ... emission rate. However, variations in emission rate at Tungurahua are large, suggesting that overall volcanic source strength ...
Tópico(s): Atmospheric chemistry and aerosols
2014 - Wiley | Journal of Geophysical Research Atmospheres
Heather Wright, K. V. Cashman, Patricia Mothes, Minard L. Hall, A. Ruiz, Jean‐Luc Le Pennec,
... ash particles produced by 1999–2006 eruptions of Tungurahua volcano, Ecuador Heather M.N. Wright; Heather M. ... ash particles produced by 1999–2006 eruptions of Tungurahua volcano, Ecuador. Geology 2012;; 40 (7): 619–622. ... 1999 to 2006 Vulcanian and Strombolian eruptions of Tungurahua volcano, Ecuador, provide quantitative information about the dynamics ...
Tópico(s): Atmospheric and Environmental Gas Dynamics
2012 - Geological Society of America | Geology
Santiago Arellano, Minard L. Hall, Pablo Samaniego, Jean‐Luc Le Pennec, A. Ruiz, Indira Molina, Hugo Yépes,
... SO2 gas measurements during the ongoing eruption of Tungurahua volcano, Ecuador. From 2004 onwards, the operation of ... suggest that the rate of passive degassing at Tungurahua requires SO2 exsolution of an andesitic magma volume ... monitoring contributes significantly to better eruption forecasting at Tungurahua, because it has provided improved understanding of underlying ...
Tópico(s): earthquake and tectonic studies
2008 - Elsevier BV | Journal of Volcanology and Geothermal Research
Diego Mauricio Bonilla Jurado, Brenda Elizabeth Oña Sinchiguano, Henry Robert López Núñez,
... empresas del sector carrocero de la provincia de Tungurahua – Ecuador. Materiales y métodos. La investigación se apoyó ... un conjunto de PYMES en la provincia de Tungurahua – Ecuador, con la ayuda de la teoría del ... empresarial del sector carrocero de la provincia de Tungurahua”. La introducción de innovaciones tecnológicas en el sector ...
Tópico(s): Business, Education, Mathematics Research
2018 - Corporación Universitaria Lasallista | Revista Lasallista de Investigación
... area, its regions are heterogeneous. The province of Tungurahua, located in the highlands, is primarily an agricultural ... Council for Hydrological Resources. In the province of Tungurahua, the regional Corporation for the Development of the ... resources in the watersheds located in 3 provinces: Tungurahua, Cotopaxi, and Pastaza. Presently, however, this institution is ...
Tópico(s): Water Governance and Infrastructure
2002 - International Mountain Society | Mountain Research and Development
Cyril Muller, Juliet Biggs, S. K. Ebmeier, Patricia Mothes, P. Palacios, P. Jarrín, Marie Edmonds, Mario Ruiz,
... with continuous GPS data from 4 sites at Tungurahua volcano, Ecuador. Our results show long-term uplift ... localised patch of subsidence mid-way up the Tungurahua's western flank is co-located with a ...
Tópico(s): Geological and Geochemical Analysis
2018 - Elsevier BV | Journal of Volcanology and Geothermal Research
Carlos Flores, María del Carmen Pérez Gónzález, Francisco Javier Maza Ávila, Karla Lissette Flores Cevallos,
... of productivity and competitiveness of the province of Tungurahua -Ecuador-, such proposal is based on the theoretical ... of productivity and competitiveness of the province of Tungurahua. Therefore, strategies have been formulated aimed at the ...
Tópico(s): Regional Development and Policy
2023 - Elsevier BV | Heliyon
Julia Eychenne, Lucia Gurioli, David E. Damby, Corinne Belville, Federica Schiavi, Geoffroy Marceau, Claire Szczepaniak, Christelle Blavignac, Mickaël Laumonier, Emmanuel Gardés, Jean‐Luc Le Pennec, Jean‐Marie Nédélec, Loı̈c Blanchon, Vincent Sapin,
Tungurahua volcano (Ecuador) intermittently emitted ash between 1999 and 2016, enduringly affecting the surrounding rural area and ... 17 August 2006 most intense eruptive phase of Tungurahua. We mapped the spatial distribution of the health- ...
Tópico(s): Air Quality and Health Impacts
2022 - Wiley | GeoHealth
H. D. Ortiz, Robin S. Matoza, Charusheela Garapaty, K. Rose, Patricio Ramón, Mario Ruiz,
... thousands of infrasound signals originating from eruptions of Tungurahua, El Reventador, and Sangay. We use Progressive Multi- ... 2012, at least thirteen periods of activity of Tungurahua between 2006 and mid 2012, and strong signals ...
Tópico(s): Seismology and Earthquake Studies
2020 - Acoustical Society of America | Proceedings of meetings on acoustics
Jean Battaglia, Silvana Hidalgo, Benjamin Bernard, Alexander Steele, Santiago Arellano, K. Acuña,
... capacities. From 2008 to 2016, volcanic activity at Tungurahua was characterized by eruptive phases separated by episodes ... interpretation of the conditions at the vent. At Tungurahua, these conditions can rapidly change at the time ...
Tópico(s): Seismic Waves and Analysis
2019 - Elsevier BV | Earth and Planetary Science Letters
Jacob F. Anderson, J. B. Johnson, Alexander Steele, Mario Ruiz, Brittany D. Brand,
Abstract During the powerful July 2013 eruption of Tungurahua volcano, Ecuador, we recorded exceptionally high amplitude, long‐ ... captured as interference. This explosion was one of Tungurahua's most powerful vulcanian eruptions since recent activity ...
Tópico(s): Seismic Waves and Analysis
2018 - American Geophysical Union | Geophysical Research Letters
Mathilde Bablon, Xavier Quidelleur, Pablo Samaniego, Jean‐Luc Le Pennec, Pierre Lahitte, Céline Liorzou, Jorge Bustillos, Silvana Hidalgo,
... study focuses on the evolution through time of Tungurahua volcano (Ecuador), and provides new information regarding its ... 1 km3/ka, occurring since the end of Tungurahua I construction. Major and trace element contents of ...
Tópico(s): Geology and Paleoclimatology Research
2018 - Elsevier BV | Journal of Volcanology and Geothermal Research
Wilson Reino, Gilson Pucha, Celso Recalde, Talía Tene, Pedro Cadena-Íñiguez,
The Tungurahua volcano began its last eruptive process in 1999 and has not ceased its activity since then, as ... near the Palma Urcu ravine (Juive) of the Tungurahua volcano using gamma spectrometry. This pyroclastic material corresponds ...
Tópico(s): Nuclear and radioactivity studies
2018 - American Institute of Physics | AIP conference proceedings
M. Teresa Armijos, Jeremy C. Phillips, Emily Wilkinson, Jenni Barclay, Anna Hicks, P. Palacios, Patricia Mothes, Jonathan Stone,
... information during a long-lived volcanic eruption in Tungurahua, Ecuador. This is complemented with a detailed study ... created an effective voluntary evacuation system unique to Tungurahua, allowing people to continue to maintain their livelihoods ...
Tópico(s): Climate Change, Adaptation, Migration
2017 - Elsevier BV | Global Environmental Change
Joan Andújar, Caroline Martel, Michel Pichavant, Pablo Samaniego, Bruno Scaillet, Indira Molina,
... Phase equilibria experiments have been performed on a Tungurahua andesite (Ecuador) to shed light on the magmatic ... event. Our results highlight the complexity of the Tungurahua plumbing system in which different magmatic reservoirs can ...
Tópico(s): earthquake and tectonic studies
2017 - Oxford University Press | Journal of Petrology