DOI: 10.1785/bssa0530010059. <i>S</i>-wave studies of earthquakes of the North Pacific, Part II: Aleutian Islands

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

10.1785/bssa0530010059

Crossref journal-article

Seismological Society of America (SSA)

Bulletin of the Seismological Society of America (790)

Abstract

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.

Bibliography

Stauder, W., & Udias, A. (1963). S-wave studies of earthquakes of the North Pacific, Part II: Aleutian Islands. Bulletin of the Seismological Society of America, 53(1), 59â77.

Authors 2

William Stauder (first)
Agustin Udias (additional)

References 9 Referenced 19

{'key': '2021071318164542900_BIB1', 'first-page': '321', 'article-title': 'Study of Stress and Rupture in Earthquake Foci with the Help of Dislocation Theory', 'volume': '24', 'author': 'Balakina', 'year': '1961', 'journal-title': 'Publ. Dom. Observ. Ottawa'} / Publ. Dom. Observ. Ottawa / Study of Stress and Rupture in Earthquake Foci with the Help of Dislocation Theory by Balakina (1961)
10.1029/TR033i004p00573 / Trans. Am. Geophys. Un. / SV and SH by Gutenberg (1952)
{'key': '2021071318164542900_BIB3', 'first-page': '389', 'article-title': 'Direction of Faulting in Some of the Larger Earthquakes of the North Pacific, 1950-1953', 'volume': '18', 'author': 'Hodgson', 'year': '1956', 'journal-title': 'Publ. Dom. Observ. Ottawa'} / Publ. Dom. Observ. Ottawa / Direction of Faulting in Some of the Larger Earthquakes of the North Pacific, 1950-1953 by Hodgson (1956)
{'key': '2021071318164542900_BIB4', 'first-page': '223', 'article-title': 'Direction of Faulting in Some of the Larger Earthquakes of 1954-1955', 'volume': '19', 'author': 'Hodgson', 'year': '1958', 'journal-title': 'Publ. Dom. Observ. Ottawa'} / Publ. Dom. Observ. Ottawa / Direction of Faulting in Some of the Larger Earthquakes of 1954-1955 by Hodgson (1958)
Hodgson John H. Stevens Anne 1962. Direction of Faulting in Some of the Larger Earthquakes of 1957-1958, Private communication in advance of publication. (10.4095/8705)
{'key': '2021071318164542900_BIB6', 'first-page': '389', 'article-title': 'Principal Horizontal Stress Directions as an Aid to the Study of Crustal Deformation', 'volume': '24', 'author': 'Lensen', 'year': '1961', 'journal-title': 'Publ. Dom. Observ. Ottawa'} / Publ. Dom. Observ. Ottawa / Principal Horizontal Stress Directions as an Aid to the Study of Crustal Deformation by Lensen (1961)
10.1785/BSSA0510020237 / Bull. Seism. Soc. Am. / The Effect of the Earth's Free Surface on the S Wave Particle Motion by Nuttli (1961)
{'key': '2021071318164542900_BIB8', 'first-page': '343', 'article-title': 'An Application of the S-Waves to Focal Mechanism Studies', 'volume': '24', 'author': 'Stauder', 'year': '1961', 'journal-title': 'Publ. Dom. Observ. Ottawa'} / Publ. Dom. Observ. Ottawa / An Application of the S-Waves to Focal Mechanism Studies by Stauder (1961)
10.1785/BSSA0520030527 / Bull. Seism. Soc. Am. / S Wave Studies of Earthquakes of the North Pacific, Part I: Kamchatka by Stauder (1962)

Dates

Type	When
Created	4 years, 1 month ago (July 13, 2021, 2:31 p.m.)
Deposited	4 years, 1 month ago (July 13, 2021, 2:31 p.m.)
Indexed	1 year, 1 month ago (July 26, 2024, 2:39 a.m.)
Issued	62 years, 7 months ago (Jan. 1, 1963)
Published	62 years, 7 months ago (Jan. 1, 1963)
Published Online	62 years, 7 months ago (Jan. 1, 1963)
Published Print	62 years, 7 months ago (Jan. 1, 1963)

Funders 0

None

BibTeX

@article{Stauder_1963, title={S-wave studies of earthquakes of the North Pacific, Part II: Aleutian Islands}, volume={53}, ISSN={0037-1106}, url={http://dx.doi.org/10.1785/bssa0530010059}, DOI={10.1785/bssa0530010059}, number={1}, journal={Bulletin of the Seismological Society of America}, publisher={Seismological Society of America (SSA)}, author={Stauder, William and Udias, Agustin}, year={1963}, month=jan, pages={59–77} }

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