Tilt, Eruptions, and Earthquakes

Use the graphs for Activity 10 to answer the following questions.
  1. Is there a correlation between tilt and eruption episodes? Explain.

  2. In terms of tilt, what happens at the summit before eruptions?

  3. Does the summit inflate to the same tilt angle prior to each eruption? Explain.

  4. Do short-period caldera earthquakes correlate with tilt and/or the eruptive episodes? Explain.

  5. Do long-period caldera earthquakes correlate with tilt and/or the eruptive episodes? Explain.

  6. Does summit tremor correlate with tilt and/or the eruptive episodes? Explain.

  7. Based on the data presented in the graphs, outline the geologic events leading up to, during, and after an eruptive episode.

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