Minor-arc and major-arc global surface wave diffraction tomography

Details Minor-arc and major-arc global surface wave diffraction tomography Minor-arc and major-arc global surface wave diffraction tomography

Apr 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pepi..149..205l&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 149, Issue 3-4, p. 205-223.

Physics

18

Scientific paper

We discuss extending global surface wave diffraction tomography to accommodate major-arc dispersion measurements. The introduction of major-arc surface wave dispersion measurements improves path density and resolution in regions poorly covered by minor-arc measurements alone, as occurs in much of the Southern Hemisphere. The addition of major-arc measurements to the inversion for dispersion maps does not appreciably degrade the fit to the minor-arc measurements but significantly improves the fit to the major-arc measurements. For these reasons, we conclude that the addition of major-arc measurements is worthwhile in the interim until the broad-band network of ocean bottom or Antarctic stations is improved in the future.

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