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W Phase inversions during the 2011 Tohoku-oki earthquake

Earth, planets, and space, 2011, Vol.63, p.535-539 [Peer Reviewed Journal]

Distributed under a Creative Commons Attribution 4.0 International License ;ISSN: 1343-8832 ;EISSN: 1880-5981

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  • Title:
    W Phase inversions during the 2011 Tohoku-oki earthquake
  • Author: Duputel, Zacharie ; Rivera, Luis ; Kanamori, Hiroo ; Hayes, Gavin ; Hirshorn, Barry F. ; Weinstein, Stuart
  • Subjects: Earth Sciences ; Environmental Sciences ; Geophysics ; Global Changes ; Physics ; Sciences of the Universe
  • Is Part Of: Earth, planets, and space, 2011, Vol.63, p.535-539
  • Description: The real time W phase source inversion algorithm was independently running at three organizations (USGS, PTWC and IPGS) at the time of the 2011 Off the Pacific Coast of Tohoku earthquake. Valuable results for tsunami warning purposes were obtained 20 min after the event origin time. Within the next hour, as more data became available, the W phase solutions improved, and converged to a common result (Mw ~ 9.0, dip ~ 14°). A post-mortem W phase analysis using data selection based on pre-event noise confirmed the Mw = 9.0 result and yielded a best double couple given by (strike/dip/rake = 196°/12°/85°). We also ran the algorithm with increasingly longer periods (T ~ 1500 sec) to test for the possibility of additional slow slip. The seismic moment remained stable, confirming the prior results
  • Publisher: Springer / Terra Scientific Publishing Company
  • Language: English
  • Identifier: ISSN: 1343-8832
    EISSN: 1880-5981
  • Source: AUTh Library subscriptions: ProQuest Central
    Alma/SFX Local Collection
    Springer Open Access Journals
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