Abstract
We examined arelationship between topographical classification, altitude and site effect of K-NET, KiK-netstations inHokurikuregionin this study. The lower frequencyof site effect, the more highly site effect correlate toaltitude. The averaged site effect with respect to topographical classification were evaluated. The averaged site effect ofobservation sites at hill is large in frequency band between 1to 3Hz, and those of delta coastal low land, back mash is large in frequency band lower than 4Hz. Moreover, coefficients of variation of site effectwith respect to topographical classification wereevaluated. We clarified that the coefficients of variation of site effect of mountain, hill and back marsh were small, and those of gravelly terrace and valley bottomlaw land were large in a arbitrary frequency band.
