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Selected Works of Jacqueline Caplan-Auerbach
Article
Seismic constraints on caldera dynamics from the 2015 Axial Seamount eruption
Science (2016)
  • William S. D. Wilcock, University of Washington
  • Maya Tolstoy, Lamont–Doherty Earth Observatory
  • Felix Waldhauser, Lamont–Doherty Earth Observatory
  • Charles Garcia, University of Washington
  • Yen Joe Tan, Lamont–Doherty Earth Observatory
  • DelWayne R. Bohnenstiehl, North Carolina State University
  • Jacqueline Caplan-Auerbach, Western Washington University
  • Robert P. Dziak, National Oceanic and Atmospheric Administration
  • Adrien F. Arnulf, University of Texas at Austin
  • M. Everett Mann, North Carolina State University
Link
Abstract
Seismic observations in volcanically active calderas are challenging. A new cabled observatory atop Axial Seamount on the Juan de Fuca ridge allows unprecedented real-time monitoring of a submarine caldera. Beginning on 24 April 2015, the seismic network captured an eruption that culminated in explosive acoustic signals where lava erupted on the seafloor. Extensive seismic activity preceding the eruption shows that inflation is accommodated by the reactivation of an outward-dipping caldera ring fault, with strong tidal triggering indicating a critically stressed system. The ring fault accommodated deflation during the eruption and provided a pathway for a dike that propagated south and north beneath the caldera’s east wall. Once north of the caldera, the eruption stepped westward, and a dike propagated along the extensional north rift.
Keywords
  • Seismic observations,
  • Active calderas,
  • Axial Seamount
Disciplines
Publication Date
December 16, 2016
DOI
10.1126/science.aah5563
Citation Information
William S. D. Wilcock, Maya Tolstoy, Felix Waldhauser, Charles Garcia, et al.. "Seismic constraints on caldera dynamics from the 2015 Axial Seamount eruption" Science Vol. 354 Iss. 6318 (2016) p. 1395 - 1399
Available at: http://works.bepress.com/jacqueline_caplan-auerbach/35/