Wu, Francis T. and Hannon, W. J.
(1966)
PP and crustal structure.
Bulletin of the Seismological Society of America, 56
(3).
pp. 733-747.
ISSN 0037-1106.
https://resolver.caltech.edu/CaltechAUTHORS:20140801-152654578
![[img]](https://authors.library.caltech.edu/47843/1.hassmallThumbnailVersion/733.full.pdf)  Preview |
|
PDF
- Published Version
See Usage Policy.
3MB |
Use this Persistent URL to link to this item: https://resolver.caltech.edu/CaltechAUTHORS:20140801-152654578
Abstract
Haskell's formulation for reflection of P waves at the base of a solid crust is extended to include overlying liquid layers. Normalized displacement and the phase shift at the base of the crust as a function of angle of incidence and frequency are calculated for two continental models and an oceanic model. Complex reflection coefficients are inverse Fourier transformed to the time domain to show the change of pulse shape upon reflection. These time traces show that the water layer of the oceanic model causes the main difference between continental and oceanic reflections. Sample seismograms from a deep shock were compared to the theoretical records; they were found to be consistent. It is concluded that the amplitude ratio PP/P as a function of frequency obtained from seismograms can be used to decipher the detailed structure at the point of reflection only after the radiation pattern of the source, attenuation of waves during propagation, and crustal transmission response at the receiver are properly taken into account.
Item Type: | Article |
---|
Related URLs: | |
---|
ORCID: | |
---|
Additional Information: | Copyright © 1966, by the Seismological Society of America.
Manuscript received September 28, 1965.
This research was supported by the Advanced Research Projects Agency and was monitored
by the Air Force Office of Scientific Research under Contract AF-49(638)-1337. |
---|
Funders: | Funding Agency | Grant Number |
---|
Air Force Office of Scientific Research (AFOSR) | AF-49(638)-1337 | Advanced Research Projects Agency (ARPA) | UNSPECIFIED |
|
---|
Other Numbering System: | Other Numbering System Name | Other Numbering System ID |
---|
Caltech Division of Geological Sciences | 1382 |
|
---|
Issue or Number: | 3 |
---|
Record Number: | CaltechAUTHORS:20140801-152654578 |
---|
Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140801-152654578 |
---|
Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. |
---|
ID Code: | 47843 |
---|
Collection: | CaltechAUTHORS |
---|
Deposited By: |
George Porter
|
---|
Deposited On: | 01 Aug 2014 22:35 |
---|
Last Modified: | 09 Mar 2020 13:19 |
---|
Repository Staff Only: item control page