Abstract
Time-domain responses as well as frequency-domain responses of a sediment-filled valley for incident SH waves are studied with the emphasis of site responses for high frequencies (> 1 Hz) which are of interest in earthquake engineering. We calculate them using a boundary integral equation method in which Green's functions are evaluated using the discrete wavenumber method. Calculating frequency-domain responses as well as time-domain responses of the sediment-filled valley, we discuss in details effects of inclined interfaces of the valley upon wave amplification patterns, propagation of Love waves and duration of the ground shaking in the valley.