Published October 1974
| Published
Journal Article
Open
High-frequency attenuation by a thin high-velocity layer
- Creators
- Mellman, George R.
- Helmberger, Donald V.
Chicago
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Abstract
The Cagniard-de Hoop method is used to investigate elastic-wave tunneling through a thin high-velocity layer. The results indicate high-frequency attenuation in the geometric shadow zone. Attenuation is roughly proportional to layer thickness. Comparison of results obtained by omitting the high-velocity layer but using an average Q operator shows that effects of the high-velocity layer are similar to Q effects, with the equivalent Q for a given layer thickness varying as a function of source-receiver distance. These attenuation effects are explained in terms of deformation of the de Hoop contour.
Additional Information
© 1974 Seismological Society of America. Manuscript received March 21, 1974. This research was supported by the Advanced Research Projects Agency of the Department of Defense and was monitored by the Air Force Office of Scientific Research under Contracts F44620-72-C-0078 and F44620-72-C-0083.Attached Files
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Additional details
- Eprint ID
- 49155
- Resolver ID
- CaltechAUTHORS:20140902-153934113
- Advanced Research Projects Agency (ARPA)
- Air Force Office of Scientific Research (AFOSR)
- F44620-72-C-0078
- Air Force Office of Scientific Research (AFOSR)
- F44620-72-C-0083
- Created
-
2014-09-03Created from EPrint's datestamp field
- Updated
-
2019-10-03Created from EPrint's last_modified field
- Other Numbering System Name
- Caltech Division of Geological and Planetary Sciences
- Other Numbering System Identifier
- 2455