Bulletin of the Seismological Society of America
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

Bulletin of the Seismological Society of America; June 1964; v. 54; no. 3; p. 947-959
© 1964 Seismological Society of America
This Article
Right arrow Full Text (PDF)
Right arrow References
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by BERG, J. W.
Right arrow Articles by PAPAGEORGE, G. E.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Elastic displacement of primary waves from explosive sources

JOSEPH W. BERG, JR. and GEORGE E. PAPAGEORGE

OREGON STATE UNIVERSITY DEPT. OF OCEANOGRAPHY, CORVALLIS, OREGON

Abstract

Equations derived from Blake's (1952) model of diverging waves from a point source were programmed for computer analysis. Variations of the displacement resulting from changes in the pressure function, propagational velocity, range, and cavity size were investigated. Results of the research indicate that: (1) a step pressure function used with this model gives displacements that closely approximate the displacements measured at 0.4 km from the Gnome nuclear explosion; (2) near the source, long-period displacements are inherent with this model; (3) the periods of the maximum Fourier transform amplitude of the radiation field is proportional to the equivalent cavity radius; (4) the peak displacements scale to the two-thirds power of charge size for values of a between 80 (0.5 kt) and 600 m (275 kt); and (5) between 0.1 and 3.0 cps, the amplitudes of given frequencies scale to the first power of charge size for values of a between 145 (3 kt) and 305 m (28 kt). In general, Fourier amplitudes at frequencies below the natural frequency of the cavity scale to the first power of charge size, and Fourier amplitudes at frequencies above the natural frequency of the cavity scale to a fractional power of charge size. It is suggested that this may be a good model with which to compare near-source observations of seismic phenomena.




This article has been cited by other articles:


Home page
 Bulletin of the Seismological Society of AmericaHome page
H. S. HASEGAWA
Surface- and body-wave spectra of CANNIKIN and shallow Aleutian earthquakes
Bulletin of the Seismological Society of America, August 1, 1973; 63(4): 1201 - 1225.
[Abstract] [PDF]

Home page
 Bulletin of the Seismological Society of AmericaHome page
L. T. LONG and J. W. BERG JR<
Transmission and attenuation of the primary seismic wave, 100 to 600 km
Bulletin of the Seismological Society of America, February 1, 1969; 59(1): 131 - 146.
[Abstract] [PDF]

Home page
 Bulletin of the Seismological Society of AmericaHome page
L. D. TREMBLY and J. W. BERG JR<
Seismic source characteristics from explosion-generated P waves
Bulletin of the Seismological Society of America, December 1, 1968; 58(6): 1833 - 1848.
[Abstract] [PDF]

Home page
 Bulletin of the Seismological Society of AmericaHome page
L. D. TREMBLY and J. W. BERG Jr.
Amplitudes and energies of primary seismic waves near the hardhat, haymaker, and shoal nuclear explosions
Bulletin of the Seismological Society of America, June 1, 1966; 56(3): 643 - 653.
[Abstract] [PDF]

Home page
 Bulletin of the Seismological Society of AmericaHome page
J. W. BERG Jr., L. D. TREMBLY, and P. R. LAUN
Primary ground displacements and seismic energy near the gnome explosion
Bulletin of the Seismological Society of America, August 1, 1964; 54(4): 1115 - 1126.
[Abstract] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1964 by the Seismological Society of America.