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; January 1963; v. 53; no. 1; p. 59-77
© 1963 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 STAUDER, W.
Right arrow Articles by UDIAS, A.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

S-wave studies of earthquakes of the North Pacific, Part II: Aleutian Islands

WILLIAM STAUDER, S.J. and AGUSTIN UDIAS, S.J.

INSTITUTE OF TECHNOLOGY ST. LOUIS UNIVERSITY, ST. LOUIS, MISSOURI

Abstract

The polarization of the S wave at stations distributed azimuthally about the source is examined for each of twenty-five Aleutian Island earthquakes. A combination of data from the first motion of P and from the polarization of S is then used to study the focal mechanisms of the earthquakes. This combination of P and S wave data is found to make possible a good determination of the focal mechanism in cases where data from the first motion of P alone do not suffice.

The earthquakes are divided into three groups according to three basic patterns of S wave polarization. The first group (fourteen earthquakes) corresponds to a double couple. The second group (five earthquakes) and the third group (six earthquakes) are conformable to conjugate shears and may therefore be explained by single couple sources of opposite moment, respectively. It is shown that a uniform principal stress system predominates in the region and that the axis of greatest compressive stress is normal to the trend of the island arc.




This article has been cited by other articles:


Home page
 Bulletin of the Seismological Society of AmericaHome page
A. A. SYED and O. W. NUTTLI
A method of correcting P-wave magnitudes for the effect of earthquake focal mechanism
Bulletin of the Seismological Society of America, December 1, 1971; 61(6): 1811 - 1826.
[Abstract] [PDF]

Home page
 Bulletin of the Seismological Society of AmericaHome page
A. UDIAS and D. BAUMANN
A computer program for focal mechanism determination combining P and S wave data
Bulletin of the Seismological Society of America, April 1, 1969; 59(2): 503 - 519.
[Abstract] [PDF]

Home page
 Bulletin of the Seismological Society of AmericaHome page
A. E. STEVENS
S-wave earthquake mechanism equations
Bulletin of the Seismological Society of America, February 1, 1967; 57(1): 99 - 112.
[Abstract] [PDF]

Home page
 Bulletin of the Seismological Society of AmericaHome page
W. STAUDER and G. A. BOLLINGER
The S wave project for focal mechanism studies earthquakes of 1962
Bulletin of the Seismological Society of America, December 1, 1964; 54(6B): 2199 - 2208.
[Abstract] [PDF]

Home page
 Bulletin of the Seismological Society of AmericaHome page
H. D. FARA
A new catalogue of earthquake fault plane solutions
Bulletin of the Seismological Society of America, October 1, 1964; 54(5A): 1491 - 1517.
[Abstract] [PDF]

Home page
 Bulletin of the Seismological Society of AmericaHome page
A. COX and W. STAUDER
Geometrical properties of groups of fault plane solutions
Bulletin of the Seismological Society of America, February 1, 1964; 54(1): 87 - 104.
[Abstract] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1963 by the Seismological Society of America.