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Spectrum of short-period core phases in relation to the attenuation in the mantle

Kanamori, Hiroo (1967) Spectrum of short-period core phases in relation to the attenuation in the mantle. Journal of Geophysical Research, 72 (8). pp. 2181-2186. ISSN 0148-0227.

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Spectral analysis is made of the records of the short-period reflected core phases from array stations at Tonto Forest, Arizona. Three earthquakes having Δ = 32.5°, 49.0°, and 62.8° are studied. Spectral ratios of ScS to ScP and PcS to PcP are calculated in order to estimate the differential effect of attenuation on P and S waves. The possible maximum value of average Q for shear in the mantle, Q[bar]_ β, is about 324 for the period range 1.5 to 5 sec. Using the value of inline image, average Q for P waves, that was previously estimated as 435 through the spectral analysis of PcP phase Q[bar]_ β and Q[bar]_α/Q[bar]_ β can be estimated at 230 and 1.90, respectively.

Item Type:Article
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Kanamori, Hiroo0000-0001-8219-9428
Additional Information:Copyright 1967 by the American Geophysical Union. (Received September 22, 1966.) I am grateful to Drs. Don L. Anderson, C. B. Archambeau, J. N. Brune, and L. R. Johnson for various suggestions that are included in the final manuscript. Research was partially sponsored by the Air Force Office of Scientific Research, Office of Aerospace Research, United States Air Force, under AFOSR contract AF-49(638)-1337. Contribution 1418, Division of Geological Sciences, California Institute of Technology.
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Air Force Office of Scientific Research (AFOSR)AF-49(638)-1337
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Caltech Division of Geological Sciences1418
Issue or Number:8
Record Number:CaltechAUTHORS:20141107-150855878
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Official Citation:Kanamori, H. (1967), Spectrum of short-period core phases in relation to the attenuation in the mantle, J. Geophys. Res., 72(8), 2181–2186, doi:10.1029/JZ072i008p02181.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:51467
Deposited By: George Porter
Deposited On:07 Nov 2014 23:36
Last Modified:09 Mar 2020 13:18

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