Seismic constraints on caldera dynamics from the 2015 Axial Seamount eruption

Details

• Journal Title:
  Science
• Personal Author:
  Wilcock, William S. D. ; Tolstoy, Maya ; Waldhauser, Felix ; Garcia, Charles ; Tan, Yen Joe ; Bohnenstiehl, DelWayne R. ; Caplan-Auerbach, Jacqueline ; Dziak, Robert P. ; Arnulf, Adrien F. ; Mann, M. Everett
• NOAA Program & Office:
  OAR (Oceanic and Atmospheric Research)
• Description:
  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.
• Source:
  Science, 354(6318), 1395-1399.
• DOI:
  https://doi.org/10.1126/science.aah5563
• Document Type:
  Journal Article
• Rights Information:
  Accepted Manuscript
• Rights Statement:
  The NOAA IR provides access to this content under the authority of the government's retained license to distribute publications and data resulting from federal funding. While users may legally access this content, the copyright owners retain rights that govern the reproduction, redistribution, and re-use of this work. The user is solely responsible for complying with applicable copyright law.
• Compliance:
  Submitted
• Download URL:
  https://repository.library.noaa.gov/view/noaa/18029/noaa_18029_DS1.pdf
• File Type:
  [PDF - 927.97 KB]
• Collection(s):
  Office of Oceanic and Atmospheric Research (OAR)
• Main Document Checksum:
  urn:sha-512:c8fb6c78d572227bb26fba87ea6d367c6eef772b54bf40f6cbd642f33f4a7b57101713e5a56845b85ef8576d6fed30f4f53fdaca58347f57f5e2c65feb810afe