Two‐station measurements of Rayleigh wave group velocity along the Hawai'ian Swell

Mark T. Woods*, Jean‐Jacques ‐J Lévêque, Emile A. Okal, Michel Cara

*Corresponding author for this work

Research output: Contribution to journalArticle

46 Scopus citations

Abstract

Two‐station measurements of Rayleigh wave group velocity between Midway Atoll and O'ahu provide a useful constraint on lithospheric thickness along the Hawai'ian Swell. Comparison of the observed dispersion curve with age‐dependent, regionalized dispersion curves suggests that the swell acts as 50–110 m.y. old lithosphere, and not as 20–50 m.y. old lithosphere as is predicted by the currently favored hypothesis for the swell's formation. A preliminary isotropic shear velocity model for the swell suggests that the lithosphere may be as thick as 100 km. This value is difficult to reconcile with the lithosphere being substantially thinned during its passage over the Hawai'ian hotspot.

Original languageEnglish (US)
Pages (from-to)105-108
Number of pages4
JournalGeophysical Research Letters
Volume18
Issue number1
DOIs
StatePublished - Jan 1 1991

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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