Abstract
The limit properties of spatial coherence of seismic ground motion are studied based on the differential relation between rotation and translation in elastic theory, the results show that the empirical mathematical model of spatial coherence must satisfy some functional characteristics. It is also indicated that the key problem to estimate rotational power spectrum densities is to obtain precisely the two order derivative of spatial coherence.
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References
Abrahamson N A, Schneider J E and Steep J C, 1991. Empirical spatial coherency function for application to soil-structure interaction analysis, Earthquake Spectra, 7(1): 1–27
Nakamura H and Yamazaki F, 1994. Spatial variation of earthquake ground motion based on the China array records, Proc 9JEES, Tokyo, Japan, 1: 439–444
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This subject is supported by the National Science Foundation, NO. 59408006.
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Wang, JJ., Chen, W. The limit properties of spatial coherence of seismic ground motion. Acta Seimol. Sin. 10, 241–246 (1997). https://doi.org/10.1007/s11589-997-0092-1
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DOI: https://doi.org/10.1007/s11589-997-0092-1