PRELIMINARY EMPIRICAL MODEL FOR SCALING FOURIER AMPLITUDE SPECTRA OF STRONG GROUND ACCELERATION IN TERMS OF MODIFIED MERCALLI INTENSITY AND RECORDING SITE CONDITIONS

被引：104

作者：

TRIFUNAC, MD

机构：

[1] Department of Civil Engineering, University of Southern California

来源：

EARTHQUAKE ENGINEERING & STRUCTURAL DYNAMICS | 1979年 / 7卷 / 01期

关键词：

D O I：

10.1002/eqe.4290070106

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This paper presents an empirical model for scaling Fourier amplitude spectra of ground acceleration during strong earthquake shaking in terms of the reported Modified Mercalli Intensity (MMI) and the simplified characteristics of the geologic environment at the recording station. This analysis shows that (i) for the intermediate and high‐frequency motions the spectral amplitudes approximately double for every level of the MMI; that (ii) the uncertainties associated with estimation of Fourier spectral amplitudes in terms of MMI are not greater than the uncertainties associated with similar estimation in terms of earthquake magnitude and epicentral distance; that (iii) the high frequency spectral amplitudes tend to be greater on basement rock sites relative to alluvium sites, with this trend being reversed for the low‐frequency spectral amplitudes; and that (iv) the spectral amplitudes of very high‐frequency vertical shaking are equal to or higher than the corresponding spectral amplitudes for horizontal shaking. Copyright © 1979 John Wiley & Sons, Ltd

引用

页码：63 / 74

页数：12

共 13 条

[1]

Seed H.B., Ugas C., Lysmer J., (1974)

[2]

Trifunac M.D., Preliminary analysis of the peaks of strong earthquake ground motion—dependence of peaks on earthquake magnitude, epicentral distance and the recording site conditions, Bull. Seism. Soc. Am., 65, pp. 189-219, (1976)

[3]

Trifunac M.D., Preliminary empirical model for scaling Fourier amplitude spectra of strong ground acceleration in terms of earthquake magnitude, source to station distance and recording site conditions, Bull. Seism. Soc. Am., 66, pp. 1343-1373, (1976)

[4]

Trifunac M.D., Brady A.G., On the correlation of seismic intensity scales with the peaks of recorded strong ground motion, Bull. Seism. Soc. Am., 65, pp. 129-162, (1975)

[5]

Barosh P.J., (1969)

[6]

Trifunac M.D., pp. 2-359, (1977)

[7]

Trifunac M.D., pp. 10-25, (1977)

[8]

Trifunac M.D., Anderson J.G., (1977)

[9]

Wong H.L., Trifunac M.D., A note on an instrumental comparison of the Modified Mercalli (MMI) and the Japanese Meteorological Agency (JMA) intensity scales, based on computed peak accelerations, Earthqu. Eng. Struct. Dyn., 7, pp. 75-83, (1979)

[10]

Trifunac M.D., A note on the range of peak amplitudes of recorded accelerations, velocities and displacements with respect to the Modified Mercalli Intensity, Earthquake Notes, 47, pp. 9-24, (1976)

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