Research Article
Sep 1969
Characteristics of Rock Motions During Earthquakes
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VIEW THE REPLYAuthors: H. Bolton Seed, M.ASCE, I. M. Idriss, AM.ASCE, and Fred W. Kiefer, M.ASCEAuthor Affiliations
Publication: Journal of the Soil Mechanics and Foundations Division
Volume 95, Issue 5
Abstract
Rock motions during earthquakes are characterized in terms of the maximum amplitude of accelerations, the predominant period of the motions, and the duration of the motions. It is shown that these characteristics depend mainly on the magnitude of the earthquake and distance of the site from the zone of energy release. Available data relating the rock motion characteristics to the magnitude of the earthquake and the distance to the causative fault are presented and used to establish a general procedure for assessing the maximum acceleration, the predominant period, the duration of shaking and the time history of accelerations developed during any given earthquake. As an example, the rock motions at the E1 Centro site (for the 1940 E1 Centro earthquake) are estimated using the proposed procedure and incorporated in analyses of the response of the site. The computed surface motions are shown to be in good agreement with those recorded during the 1940 E1 Centro earthquake.
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Published In
Journal of the Soil Mechanics and Foundations Division
Volume 95 • Issue 5 • September 1969
Pages: 1199 - 1218
Copyright
© 1969 American Society of Civil Engineers.
History
Published in print: Sep 1969
Published online: Feb 12, 2021
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Authors
Affiliations
H. Bolton Seed, M.ASCE
Prof. of Civ. Engrg., Univ. of Calif., Berkeley, Calif.
I. M. Idriss, AM.ASCE
Sr. Engr., Dames & Moore, San Francisco and Asst. Research Engr., Dept. of Civ. Engrg., Univ. of Calif., Berkeley, Calif.
Fred W. Kiefer, M.ASCE
Assoc. Prof. of Civ. Engrg., Utah State Univ., Logan, Utah.
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.