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Volcano Island

Triggered tremor may simply be clock-advanced failure , which could make it useful as a widely available ambient tremor and perhaps slow slip ‘meter’. Posited Triggering Wave Amplitudes Vancouver Island (Cascadia). Posited Triggering Wave Amplitudes Vancouver Island (Cascadia).

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Volcano Island

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  1. Triggered tremor may simply be clock-advanced failure, which could make it useful as a widely available ambient tremor and perhaps slow slip ‘meter’. Posited Triggering Wave Amplitudes Vancouver Island (Cascadia) Posited Triggering Wave Amplitudes Vancouver Island (Cascadia) Volcano Island Triggering depends on more than wave amplitude. Triggering depends on more than wave amplitude. Rubinstein et al. (2008)

  2. Clock-Advance Model Fault population with failures at a ~constant rate.

  3. Clock-Advance Model Perturbation advances (or delays) the failure times.

  4. Rate tests. unperturbed rate relationship between clock- advance & fault proximity to failure perturbed rate [This underlies the ‘Dieterich (1994)’ aftershock model. Used in Beeler & Lockner (2003), Kaneko & Lapusta (2008), & others.]

  5. Cascadia Ambient Tremor Probabilities & Teleseism Origin Times

  6. 2008 Wenchuan Earthquake Waves Arrive During ETS Event & Trigger Tremor Ambient Tremor Sichuan P-Waves Triggered Tremor seconds

  7. Comparable 2007 Peru Earthquake Waves Arrive During Inter-ETS Time -> No Triggering Peru P-Waves seconds

  8. Denali Waves -> Instrumentation Matters! PNSN PNSN PNSN & CNSN

  9. Amplitude tests: bigger perturbations -> bigger summed tremor.

  10. Amplitude tests: bigger perturbations -> bigger summed tremor. Suggestion of a scaling… data are noisy and scant.

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