2018 journal article

Mechanics of fault reactivation before, during, and after the 2015 eruption of Axial Seamount

GEOLOGY, 46(5), 447–450.

By: S. Levy n, D. Bohnenstiehl n, P. Sprinkle n, M. Boettcher*, W. Wilcock*, M. Tolstoy*, F. Waldhauser*

co-author countries: United States of America 🇺🇸
Source: Web Of Science
Added: August 6, 2018

Research Article| March 14, 2018 Mechanics of fault reactivation before, during, and after the 2015 eruption of Axial Seamount S. Levy; S. Levy 1Department of Marine, Earth & Atmospheric Sciences, North Carolina State University, Raleigh, North Carolina 27695, USA Search for other works by this author on: GSW Google Scholar D.R Bohnenstiehl; D.R Bohnenstiehl 1Department of Marine, Earth & Atmospheric Sciences, North Carolina State University, Raleigh, North Carolina 27695, USA Search for other works by this author on: GSW Google Scholar P. Sprinkle; P. Sprinkle 1Department of Marine, Earth & Atmospheric Sciences, North Carolina State University, Raleigh, North Carolina 27695, USA Search for other works by this author on: GSW Google Scholar M.S. Boettcher; M.S. Boettcher 2Department of Earth Sciences, University of New Hampshire, Durham, New Hampshire 03824, USA Search for other works by this author on: GSW Google Scholar W.S.D. Wilcock; W.S.D. Wilcock 3School of Oceanography, University of Washington, Seattle, Washington 98195, USA Search for other works by this author on: GSW Google Scholar M. Tolstoy; M. Tolstoy 4Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar F. Waldhauser F. Waldhauser 4Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York 10964, USA Search for other works by this author on: GSW Google Scholar Geology (2018) 46 (5): 447–450. https://doi.org/10.1130/G39978.1 Article history received: 08 Dec 2017 rev-recd: 09 Feb 2018 accepted: 14 Feb 2018 first online: 14 Mar 2018 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation S. Levy, D.R Bohnenstiehl, P. Sprinkle, M.S. Boettcher, W.S.D. Wilcock, M. Tolstoy, F. Waldhauser; Mechanics of fault reactivation before, during, and after the 2015 eruption of Axial Seamount. Geology 2018;; 46 (5): 447–450. doi: https://doi.org/10.1130/G39978.1 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGeology Search Advanced Search Abstract Ocean-bottom seismic and seafloor pressure data from the Ocean Observatories Initiative’s Cabled Array were used to study fault reactivation within Axial Seamount (offshore Oregon, USA). Microearthquakes that occurred during 2015–2016 were located on portions of an outward-dipping ring fault system that was reactivated in response to the inflation and deflation of the underlying magma chamber. Prior to an eruption in April 2015, focal mechanisms showed a pattern of normal slip consistent with the differential vertical uplift of the caldera floor relative to the rim. During the eruption, seismic activity remained localized along these outward-dipping structures; however, the slip direction was reversed as the caldera floor subsided. After the eruption, as the volcano reinflated and the caldera floor uplifted, these faults exhibited sparser seismicity with a more heterogeneous pattern of slip. Monitoring the evolution of ring fault behavior through time may have utility as a metric in future eruption forecasts. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.