MANTLE SHEAR WAVE VELOCITIES DETERMINED FROM OCEANIC LOVE AND RAYLEIGH WAVE DISPERSION

Abstract

Dispersion of Love and Rayleigh waves was computed for a model of the suboceanic crust and mantle. An important feature of this model is a low-velocity layer in the upper mantle. These calculations, which include the effect of spericity, are consistent with oceanic Love wave dispersion data for periods from 10 to 800 seconds to within a few hundredths of a kilometer per second. The effect of sphericity on oceanic Love waves is of great importance for periods as short as 10 seconds because of the penetration of these waves into the low-velocity channel. Computations for the same model, which consists of homogeneous isotropic layers, are also in accord with the oceanic Rayleigh wave data for periods from 30 to 150 seconds to within a few hundredths of a kilometer per second.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1962
Accession Number
AD0403920

Entities

People

  • Lynn Sykes
  • Mark Landisman
  • Yasuo Soto

Tags

DTIC Thesaurus Topics

  • Artificial Intelligence
  • Continents
  • Earth Models
  • Elastic Waves
  • Group Velocity
  • Love Waves
  • Materials
  • Models
  • New Guinea
  • Nuclear Explosions
  • Phase Velocity
  • Physical Properties
  • Rayleigh Waves
  • Secondary Waves
  • Surface Waves
  • Wave Propagation
  • Waves

Readers

  • Seismology