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The measurement of ground motion of destructive earthquakes

Hudson, D. E. (1963) The measurement of ground motion of destructive earthquakes. Bulletin of the Seismological Society of America, 53 (2). pp. 419-437. ISSN 0037-1106.

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The need for a greatly expanded network of strong-motion accelerographs throughout the seismic regions of the world is stressed. A summary of the characteristics of currently available strong-motion accelerographs is presented, and the design details are given for an instrument suitable for acquiring the basic data needed by structural engineers for earthquake resistant design. It is shown that for such an instrument, the natural period must be less than 0.1 seconds, and that the recording speed must be at least 1 cm/sec. The critical nature of the inertia starting device is discussed, and some information is given on the transient response of the standard pendulum starter used in the United States Coast and Geodetic Survey Strong-Motion Accelerograph. The use of simpler, non-time-recording instruments such as the U.S.C.G.S. Seismoscope to supplement the accelerograph network is described.

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Additional Information:Copyright © 1963, by the Seismological Society of America. Manuscript received April 12, 1962. Thanks are expressed to Mr. W. K. Cloud, Chief of the Seismological Field Survey of the United States Coast and Geodetic Survey for information on the U.S.C.G.S. Accelerograph and for the data on field tests of the U.S.C.G.S. Seismoscope. Drs. N. Nasu, R. Takahasi, and K. Kanai of the Earthquake Research Institute of the University of Tokyo, and Mr. M. Saito of Akashi Seisakusho Ltd., kindly supplied information on the Japanese strong-motion accelerographs and instrumentation program.
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:47807
Deposited By: George Porter
Deposited On:01 Aug 2014 20:11
Last Modified:03 Oct 2019 06:57

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