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This research aims to refine procedures for estimating the dominant periods of sites using microtremor data.

April 21, 1994Doboku Gakkai RonbunshuOpen Access

Refinement and Application of an Estimation Procedure for Site Natural Periods Using Microtremor

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Randomized trial estimates natural periods in urban Tokyo, suggesting a new practical procedure for geotechnical analysis.

This research aims to refine procedures for estimating the dominant periods of sites using microtremor data.
Theoretical analysis of issues related to estimating dominant periods using the amplitude ratio of horizontal and vertical microtremor movements.
Development of an easy-to-apply estimation procedure for multilayered ground.
Conducted real microtremor measurements at all junior high schools in Tokyo for period mapping.
Successfully demonstrated the practical applicability of the proposed estimation procedure.
Mapped period estimates for Tokyo's areas and compared them to existing maps, showing improved accuracy.

Ohmachi et al. (1994) studied this question.

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