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Velocity and Q of mantle waves

Kanamori, Hiroo (1970) Velocity and Q of mantle waves. Physics of the Earth and Planetary Interiors, 2 (4). pp. 259-275. ISSN 0031-9201.

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Phase velocity and Q of long-period waves have been determined for 13 great-circle paths for Rayleigh waves and 12 great-circle paths for Love waves. Group velocities are also determined by band-pass filtering technique. Some of the preexisting data are incorporated to obtain representative sets of data for Q, phase and group velocities. With these sets of data stringent tests of various Earth models are possible. Each great-circle path is divided into oceanic, “tectonic” and shield portions, and a regression analysis is made on the phase velocity data to obtain pure-path dispersion curves for these distinct tectonic provinces. For both Love and Rayleigh waves, the pure-path phase velocity is found to be significantly lower for tectonically active regions than for ocean and shield. This difference in the phase velocity curve suggests that the mantle structure beneath tectonically active regions is significantly different from that elsewhere even at depths below 200 km.

Item Type:Article
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Kanamori, Hiroo0000-0001-8219-9428
Additional Information:© 1970 North-Holland Publishing Company. Received 8 December 1969. I am grateful to Prof. Frank Press for kindly reading the manuscript and making valuable suggestions. I thank David Boore who made available to me a computer program for multiple filtering. This research was supported by the Air Force Office of Scientific Research under contract AF49(638)-1632.
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Air Force Office of Scientific Research (AFOSR)AF49(638)-1632
Issue or Number:4
Record Number:CaltechAUTHORS:20150128-101636327
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Official Citation:Hiroo Kanamori, Velocity and Q of mantle waves, Physics of the Earth and Planetary Interiors, Volume 2, Issue 4, June 1970, Pages 259-275, ISSN 0031-9201, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:54180
Deposited By: Tony Diaz
Deposited On:28 Jan 2015 20:35
Last Modified:09 Mar 2020 13:18

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