Ewing, Maurice and Press, Frank (1954) Mantle Rayleigh waves from the Kamchatka earthquake of November 4, 1952. Bulletin of the Seismological Society of America, 44 (3). pp. 471-479. ISSN 0037-1106. https://resolver.caltech.edu/CaltechAUTHORS:20141010-103135503
|
PDF
- Published Version
See Usage Policy. 555kB |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20141010-103135503
Abstract
Mantle Rayleigh waves from the Kamchatka earthquake of November 4, 1952, are analyzed. The new Palisades long-period vertical seismograph recorded orders R_6–R_(15), the corresponding paths involving up to seven complete passages around the earth. The dispersion data for periods below 400 sec. are in excellent agreement with earlier results and can be explained in terms of the known increase of shear velocity with depth in the mantle. Data for periods 400-480 sec. indicate a tendency for the group velocity curve to level off, suggesting that these long waves are influenced by a low or vanishing shear velocity in the core. Deduction of internal friction in the mantle from wave absorption gives a value 1/Q = 370 × 10^(−5) for periods 250-350 sec. This is a little over half the value reported earlier for periods 140-215 sec.
Item Type: | Article | ||||||
---|---|---|---|---|---|---|---|
Related URLs: |
| ||||||
Additional Information: | © 1954 Seismological Society of America. Manuscript received for publication April 22, 1953. This research has been supported by the Geophysics Research Division of the Air Force Cambridge Research Center under Contract AF 19(122)441. | ||||||
Funders: |
| ||||||
Issue or Number: | 3 | ||||||
Record Number: | CaltechAUTHORS:20141010-103135503 | ||||||
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20141010-103135503 | ||||||
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||
ID Code: | 50337 | ||||||
Collection: | CaltechAUTHORS | ||||||
Deposited By: | Tony Diaz | ||||||
Deposited On: | 10 Oct 2014 18:39 | ||||||
Last Modified: | 03 Oct 2019 07:22 |
Repository Staff Only: item control page