Seismic Wave Velocities in the New Guinea-Solomon Islands Region

  1. Gordon A. Macdonald and
  2. Hisashi Kuno
  1. J. A. Brooks

Published Online: 21 MAR 2013

DOI: 10.1029/GM006p0002

The Crust of the Pacific Basin

The Crust of the Pacific Basin

How to Cite

Brooks, J. A. (1962) Seismic Wave Velocities in the New Guinea-Solomon Islands Region, in The Crust of the Pacific Basin (eds G. A. Macdonald and H. Kuno), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM006p0002

Author Information

  1. Port Moresby Geophysical Observatory, Bureau of Mineral Resources, Port Moresby, Papua

Publication History

  1. Published Online: 21 MAR 2013
  2. Published Print: 1 JAN 1962

Book Series:

  1. Geophysical Monograph Series

Book Series Editors:

  1. Waldo E. Smith

ISBN Information

Print ISBN: 9780875900063

Online ISBN: 9781118669310

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Keywords:

  • Earth's mantle;
  • Gutenberg's method of analysis;
  • Seismic wave velocities;
  • Surface-wave dispersion;
  • Velocity distribution

Summary

Independent values of the velocity of P waves have been determined to a depth of 500 km below the New Guinea-Solomon Islands region from an empirical study of the arrival times at the surface from 185 earthquakes. The existence of a low-velocity channel with an axis at a depth of 150 km where P waves may be transmitted at a velocity of 7.6 km/sec, is inferred.

The use of preliminary earthquake epicenters, origin times, and depths of the United States Coast and Geodetic Survey (USCGS), has confirmed the greater reliability of such data since these were determined by electronic computer.