Timing magma ascent at Popocatepetl Volcano, Mexico, 2000–2001

Pozzo, Ana Lillian Martin-Del; Cifuentes, Gerardo; Cabral‐Cano, E.; Bonifaz, R.; Correa, F.; Mendiola, Irma Fabiola

doi:10.1016/s0377-0273(03)00091-x

Cited by 26 publications

(53 citation statements)

References 10 publications

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“…pumice and ballistic blocks corresponding to these events are presented in Figure 2. The bulk rock composition measured by X-ray fluorescence spectroscopy of both kinds of samples, the 2001 pumice and 2003 ballistic blocks, ranges from andesite to dacite (SiO 2 of 61-65%), similar to the compositions reported for other explosive events of Popocatépetl during the 1994-present eruption (Straub and Martin-Del Pozzo, 2001;Martín del Pozzo et al, 2003;Witter et al, 2005).…”

Section: Samplessupporting

confidence: 74%

Fragmentation behavior of eruptive products of Popocatépetl volcano: an experimental contribution

Alatorre‐Ibargüengoitia

Arciniega-Ceballos²,

López

et al. 2019

GeofInt

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En este artículo se presenta un estudio experimental del comportamiento de fragmentación de muestras naturales del volcán Popocatépetl en un tubo de choque. Estos experimentos simulan explosiones Vulcanianas como las que han ocurrido en el volcán Popocatépetl desde su reactivación en 1994. Aquí detallamos el comportamiento de varios parámetros incluyendo la presión umbral de fragmentación, rapidez de fragmentación, velocidad de emisión y eficiencia de fragmentación. Nuestros resultados indican que la porosidad interconectada de la roca y la presión aplicada ejercen una fuerte influencia en el proceso de fragmentación. Los valores de la presión umbral de fragmentación que se presentan aquí proporcionan estimaciones cuantitativas de la sobrepresión requerida para generar una explosión en el volcán Popocatépetl. Así mismo, presentamos las primeras estimaciones de la rapidez de fragmentación a temperaturas magmáticas. La eficiencia de fragmentación de los piroclastos generados experimentalmente es evaluada a través de la teoría fractal de fragmentación y observamos que su granulometría puede ser influenciada significativamente por la composición y la textura de la matriz. La granulometría de depósitos de caía asociados a diferentes eventos explosivos del volcán Popocatépetl también muestran un comportamiento fractal, pero con dimensiones fractales mayores a las correspondientes a las partículas generadas experimentalmente, lo cual es consistente con la ocurrencia de procesos de fragmentación secundarios durante las erupciones. Finalmente, presentamos información extraída de señales elastoacústicas asociadas con los procesos de fragmentación. El análisis de los resultados experimentales que se presentan aquí son útiles para calibrar modelos eruptivos e interpretar datos de monitoreo de las erupciones de volcanes con composición intermedia y de este modo contribuyen al mejoramiento de la evaluación del peligro de estos riesgosos volcanes.

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Section: Samplessupporting

confidence: 74%

Fragmentation behavior of eruptive products of Popocatépetl volcano: an experimental contribution

Alatorre‐Ibargüengoitia

Arciniega-Ceballos²,

López

et al. 2019

GeofInt

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“…All samples used are derived from eruptive products of Popocatepetl volcano in Mexico. The chemical compositions of these samples range from andesite to dacite [ Martín del Pozzo et al ., ; Witter et al ., ; Siebe and Macías , ; Alatorre‐Ibargüengoitia et al ., ].…”

Section: The Experimental Volcanomentioning

confidence: 99%

Seismological analysis of conduit dynamics in fragmentation experiments

Arciniega-Ceballos¹,

Alatorre‐Ibargüengoitia

Scheu

et al. 2014

JGR Solid Earth

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We simulate gas-burst and volcanic explosions under controlled laboratory conditions inducing fragmentation of volcanic rocks by rapid depressurization. A series of experiments were performed in a shocktube apparatus at room temperature and a pressure range of 4 to 20 MPa using Argon (Ar) gas and, particles or pumice samples of different porosities. The instrumentation of this system with high-precision piezoelectric sensors enabled us to capture elastic waves and to recognize their characteristic signatures. By relating these signals to physical processes in the wave field, we have been able to characterize the conduit mechanism and the source dynamics. We compare and discuss conspicuous features of the waveforms and frequency spectra of these experimental signals with those of volcanic origin. Despite the fact that these signals are different in amplitude (resulting from different scale conditions); our observations indicate that the physical processes that occur during simulated explosions and those that occur during volcanic eruptions yield comparable signatures in their respective records. The effects of the source-receiver configuration and resonance also have significant implications. All this suggests that the physical processes (e.g. pressurization and depressurization of a system) involve a system response that causes similar distinctive effects independent of the system size, reflecting its intrinsic dynamics. These similarities imply that powerful constraints on the source mechanisms of volcanic seismicity can emerge from seismic investigations of experimental simulations of volumetric sources. Such constraints may yield significant advances in the understanding of volcanic conduit dynamics and in the interpretation of seismic unrest at volcanic centers.

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“…The peak of activity, in 2000-2003, was characterized by the rapid growth of large lava domes, tens of strong vulcanian explosions, SO 2 fluxes up to 1,700 kg/s and a powerful subplinian phase that sent an ash column up to 17 km a.s.l. and produced 5 km long pyroclastic flows (Martin-Del Pozzo et al, 2003;Delgado-Granados, 2008). Evacuation of the closest villages was ordered during this eruptive phase.…”

Section: Introductionmentioning

confidence: 99%