広島大学大学院工学研究科研究報告 Volume 59 Issue 1
published_at 2010

Microtremor H/V Spectrum Ratio and Site Amplification Factor in the Seismic Observation Stations for 2008 Iwate-Miyagi Nairiku Earthquake

2008年岩手・宮城内陸地震の強震観測点における常時微動H/Vスペクトルとサイト増幅特性
Hata Yoshiya
Nakamura Susumu
Nozu Atsushi
Shibao Susumu
Murakami Yohei
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BullGradSchEng-HiroshimaUniv_59-1_Hata-et-al.pdf
Abstract
The great geo-disaster occurred in the 2008 Iwate-Miyagi Nairiku Earthquake. In this study, we carried out the microtremor measurement, and calculated microtremor H/V spectrum ratio in 17 seismic stations where the strong ground motion were recorded in the 2008 Iwate-Miyagi Nairiku Earthquake. Furthermore, we computed the horizontal and vertical site amplification factors in the seismic observation stations using the moderate earthquake motion records. The calculated H/V spectra and site amplification factors will contribute to the seismic motion estimation of the damaged areas and clarification of damage mechanisms in the future study.
Keywords
2008 Iwate-Miyagi Nairiku Earthquake
seismic station
microtremor measurement
site amplification factor