The trigger mechanism of low-frequency earthquakes on Montserrat

  title={The trigger mechanism of low-frequency earthquakes on Montserrat},
  author={J{\"u}rgen Neuberg and Hugh Tuffen and Laura C. Siegwart Collier and Daniel Green and Timothy D Powell and Donald B Dingwell},
A careful analysis of low-frequency seismic events on Soufrièere Hills volcano, Montserrat, points to a source mechanism that is non-destructive, repetitive, and has a stationary source location. By combining these seismological clues with new field evidence and numerical magma flow modelling, we propose a seismic trigger model which is based on brittle failure of magma in the glass transition. Loss of heat and gas from the magma results in a strong viscosity gradient across a dyke or conduit… CONTINUE READING


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