Refinement and application of an estimation procedure for site natural periods using microtremor

Tatsuo Ohmachi, Katsuaki Konno, Tatsuya Endoh, Takumi Toshinawa

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Based on recent studies suggesting that Rayleigh waves are observable in microtremor ground motions, an improved procedure is proposed to estimate a natural period of a site using amplitude ratios between horizontal and vertical motion of the microtremors. The procedure is to make the best use of not only peaks but also troughs in a spectral amplitude ratio. Using microtremor data measured at all junior high schools in 23 wards of Tokyo, the proposed procedure is applied to a period-mapping of the area and compared with an existing map to a satisfactory level of accuracy, demonstrating its practicality.

Original languageEnglish
Pages (from-to)251-260
Number of pages10
JournalDoboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers
Issue number489 pt 1-27
Publication statusPublished - 1994
Externally publishedYes

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Rayleigh waves

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Refinement and application of an estimation procedure for site natural periods using microtremor. / Ohmachi, Tatsuo; Konno, Katsuaki; Endoh, Tatsuya; Toshinawa, Takumi.

In: Doboku Gakkai Rombun-Hokokushu/Proceedings of the Japan Society of Civil Engineers, No. 489 pt 1-27, 1994, p. 251-260.

Research output: Contribution to journalArticle

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