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Long-period earthquakes and co-eruptive dome inflation seen with particle image velocimetry

Author

Listed:
  • Jeffrey B. Johnson

    (New Mexico Tech, Socorro, New Mexico 87801, USA)

  • Jonathan M. Lees

    (Geological Sciences, University of North Carolina, Chapel Hill, North Carolina 27599, USA)

  • Alexander Gerst

    (Institute for Geophysics, University of Hamburg)

  • Dork Sahagian

    (Earth and Environmental Sciences, Lehigh University, Bethlehem, Pennsylvania 18015, USA)

  • Nick Varley

    (Facultad de Ciencias, University of Colima)

Abstract

Volcano respirations captured Dome growth and explosive degassing are fundamental processes in the cycle of continental arc volcanism. Johnson et al. present novel optical geodetic observations to constrain the sources responsible for long-period volcanic earthquakes, which are coincident with frequent explosive eruptions at Santiaguito volcano, Guatemala. They find that acceleration in deformation of the volcanic dome, extracted from high-resolution optical image processing, is coincident with recorded long-period seismic sources. Based on these observations, abrupt mass shift of solidified domes, conduit magma or magma pads seem to be part of the mechanism responsible for generating long-period earthquakes at silicic volcanic systems.

Suggested Citation

  • Jeffrey B. Johnson & Jonathan M. Lees & Alexander Gerst & Dork Sahagian & Nick Varley, 2008. "Long-period earthquakes and co-eruptive dome inflation seen with particle image velocimetry," Nature, Nature, vol. 456(7220), pages 377-381, November.
    • Handle: RePEc:nat:nature:v:456:y:2008:i:7220:d:10.1038_nature07429
    DOI: 10.1038/nature07429
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