title: Variations of Upper Mantle Structure under the Pacific Ocean.
abstract: The inversion of Rayleigh wave dispersion data for the Pacific Ocean shows that lithospheric thickness increases systematically with age. The lid to the low-velocity channel is very thin or absent near the ridge crest; the low-velocity channel may be absent in the oldest parts of the ocean.
authors.forename: A R
authors.initials: AR
authors.lastname: Leeds
authors.forename: L
authors.initials: L
authors.lastname: Knopoff
authors.forename: E G
authors.initials: EG
authors.lastname: Kausel