patterns in open vent, strombolian behavior at fuego volcano, guatemala, 2005-2007 bulletin of...
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Patterns in Open vent, Strombolian Behavior at Fuego Volcano, Guatemala, 2005-2007
Bulletin of Volcanology (in press)
Authors:(MTU): JJ Lyons, GP Waite, WI Rose,
(INSIVUMEH): G Chigna
INSIVUMEH
• Develop simple tools to improve daily monitoring
• Characterize activity at Fuego
• Improve understanding of how Fuego works, sharing gains with INSIVUMEH scientists and observers
Fuego volcano, Guatemala 2005-2007: objectives
Fuego volcano, Guatemala 2005-2007: overview
Observational volcano monitoring
Eruptive pattern recognition
Fuego volcano, Guatemala 2005-2007: cyclic eruptive behavior
Passive lava effusion
Paroxysmal eruptions
Degassing explosions
eruption1
eruption2
eruption3
Fuego volcano, Guatemala 2007: seismo-acoustic data
Short period (1 Hz) single component seismometer
Persistent tremor
Harmonic, gliding
Typically 1-3 Hz
Fuego volcano, Guatemala 2007: seismo-acoustic data
2 low frequency microphones
degassing explosion
strombolian explosion
Fuego volcano, Guatemala 2007: cumulative trends
Lava flow and thermal output agree for three periods of activity
Tremor continues during degassing explosions
Fuego volcano, Guatemala 2005-2007: estimate of lava volume extruded and output rate
Output rate: 0.18 m3s-1 (0.021 – 2.43 m3s-1)
Erupted lava volume: 11.3X106 m3 (9-48X106 m3)
Fuego volcano, Guatemala 2005-2007: model for production of eruption cycle
Foam growth model (Jaupart and Vergniolle 1989)
Passive lava effusion andstrombolian explosions stable foam growth and flow into conduit
Paroxysmal eruptions unstable foam growth and collapse
Degassing explosions drainback and slow foam growth