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Wave Velocities in the Outer Part of the Earth's Mantle

Gutenberg, B. (1952) Wave Velocities in the Outer Part of the Earth's Mantle. Nature, 170 (4320). p. 289. ISSN 0028-0836. doi:10.1038/170289a0.

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Hitherto, wave velocities V in the earth's interior have been calculated from the travel times t of earthquake waves in shallow shocks computed as a function of the epicentral distances Δ. This procedure fails if at any depth the velocity V decreases with depth at a rate in excess of dV/dr = V/r, where r is distance from the centre. In this case a portion of the travel-time curve is formed by the arrival of diffracted waves; if these are misinterpreted as direct waves, incorrect velocities are found not only for the low-velocity layer, but also (with decreasing errors) for all deeper layers. Moreover, discontinuities may be inferred when none actually exists.

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Additional Information:© 1952 Nature Publishing Group.
Issue or Number:4320
Record Number:CaltechAUTHORS:20140923-103001743
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:49932
Deposited By: Tony Diaz
Deposited On:23 Sep 2014 17:34
Last Modified:10 Nov 2021 18:49

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