Physical models of volcanic eruptions
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Cited by (54)
Evidence for the development of permeability anisotropy in lava domes and volcanic conduits
2016, Journal of Volcanology and Geothermal ResearchCitation Excerpt :Accurately incorporating scale effects remains an outstanding challenge in volcanology, especially in transferring experimental data to eruption models and hazard mitigation policies. To advance our understanding of volcanic processes and better predict eruptive scenarios requires the development of models which effectively reproduce eruption characteristics observed in nature (e.g. Melnik, 2000; Burgisser and Gardner, 2004; Collombet, 2009), especially the transitions and timescales between explosive and effusive periods (e.g. Jaupart, 1996, 1998; Collinson and Neuberg, 2012). Based on our study, we suggest that future models assessing conduit dynamics and permeability evolution consider the propensity for permeability anisotropy within the magma column and lava dome on multiple lengthscales.
Contrasting patterns of vesiculation in low, intermediate, and high Hawaiian fountains: A case study of the 1969 Mauna Ulu eruption
2013, Journal of Volcanology and Geothermal ResearchCitation Excerpt :Rapid fluctuations in eruptive behavior are observed during eruptions at basaltic volcanoes like Kīlauea, with growing evidence suggesting behavior cannot be correlated only to eruption rate but also to the fluid dynamics of two-phase (melt-gas) ascent and segregation in the shallow volcanic plumbing system (Wilson, 1980; Wilson and Head, 1981; Head and Wilson, 1989; Cashman and Mangan, 1994; Parfitt and Wilson, 1995; Jaupart, 1996; Papale, 1999; Parfitt, 2004; Gonnermann and Manga, 2007; Kamenetsky et al., 2007).
Evolution of the mafic Villa Senni caldera-forming eruption at Colli Albani volcano, Italy, indicated by textural analysis of juvenile fragments
2012, Journal of Volcanology and Geothermal ResearchCitation Excerpt :What is most intriguing about caldera-forming, explosive eruptions of mafic magma, or highly undersaturated potassic magma such as at Colli Albani (Giordano et al., 2006; Boari et al., 2009; Giordano and the CARG Team, 2010), is that their occurrence implies an effective and prolonged coupling between the exsolving volatile phase and magma during vesiculation; in low viscosity magma, this requires sufficiently rapid magma rise to prevent extensive gas–liquid segregation. It is well known that magma behaviour during vesiculation and fragmentation is influenced by magma composition and viscosity (Gardner et al., 1996; Dingwell, 1998; Papale et al., 1998; Papale and Polacci, 1999), volatile content (Papale et al., 1998; Giordano et al., 2005) and magma ascent rate (Jaupart, 1996; Parfitt, 2004; Sable et al., 2006a, 2009). Textural studies of mafic pyroclasts attest to the changes in bubble and crystal content, and therefore in magma rheology, caused by magma ascent and degassing (Polacci et al., 2003; Sable et al., 2006a, 2009; Wright et al., 2009; Costantini et al., 2010).
Diverse patterns of ascent, degassing, and eruption of rhyolite magma during the 1.8ka Taupo eruption, New Zealand: Evidence from clast vesicularity
2010, Journal of Volcanology and Geothermal ResearchLinking experimental and natural vesicle textures in Vesuvius 79AD white pumice
2010, Journal of Volcanology and Geothermal ResearchConstraints on eruption dynamics of basaltic explosive activity derived from chemical and microtextural study: The example of the Fontana Lapilli Plinian eruption, Nicaragua
2010, Journal of Volcanology and Geothermal ResearchCitation Excerpt :Diversity in intensity and style of basaltic pyroclastic eruptions is controlled by ascent processes that modulate source parameters, e.g., mass flux and melt chemistry including pre-eruptive volatile content (Jaupart, 1996; Papale, 1999; Huppert, 2000; Gonnermann and Manga, 2007).