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Transferability of strong ground-motion coherency between the SMART1 and SMART2 arrays

Institute of Earth Sciences Academia Sinica, Taipei, Taiwan, R.O.C.
Seismographic Stations Department of Geology and Geophysics University of California, Berkeley, California 94720

Abstract

Seismic wave coherency in strong ground shaking is modeled in synthetic accelerograms to provide realistic input for engineering analysis of multi-supported structures. At present there is only a small number of available measured coherency functions, a seminal set coming from earthquake recordings by the SMART1 array in Taiwan. A comparison of coherency functions for both vertical and horizontal motions from a magnitude 5.5 earthquake recorded by the new SMART2 indicates no significant difference in the range 1 to 10 Hz for separation distances of 400, 800, and 1500 m.

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