Analysis of the 2009 earthquake swarm near Sunset Crater volcano, Arizona

David S Brumbaugh, B. E. Hodge, L. Linville, A. Cohen

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A swarm of microearthquakes occurred on October 31, 2009 within 5. km of the Sunset Crater, Arizona, volcano. A detailed study of the swarm was warranted because of its location near a young volcanic construct and its proximity to the population center of Flagstaff, Arizona. The question posed in this study was whether the swarm was the result of tectonic stress release during fault slip, or due to stresses driven by magmatic processes. This question was addressed by analyzing and comparing the physical and seismic characteristics of the swarm to the regional tectonic environment and to the characteristics of tectonic swarms in Arizona and magmatic/volcanic swarms elsewhere. This analysis included swarm duration, frequency of events, b-value, focal depths and epicentral pattern of the swarm. The comparison of the salient features of the 2009 Sunset Crater swarm to both magmatic and tectonic swarms indicates that the Sunset Crater swarm has features similar to magmatic swarms and is a potential magmatic swarm candidate.

Original languageEnglish (US)
Pages (from-to)18-28
Number of pages11
JournalJournal of Volcanology and Geothermal Research
Volume285
DOIs
StatePublished - Sep 15 2014

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sunset
earthquake swarm
Volcanoes
Tectonics
craters
volcanoes
crater
tectonics
Earthquakes
earthquakes
volcano
volcanology
Fault slips
microearthquake
fault slip
proximity
slip
analysis

Keywords

  • San Francisco volcanic field
  • Seismicity
  • Sunset Crater
  • Swarm

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Analysis of the 2009 earthquake swarm near Sunset Crater volcano, Arizona. / Brumbaugh, David S; Hodge, B. E.; Linville, L.; Cohen, A.

In: Journal of Volcanology and Geothermal Research, Vol. 285, 15.09.2014, p. 18-28.

Research output: Contribution to journalArticle

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