Investigating the origin of azimuthal site-response variability using KiK-net data: a twofold spectral ratio approach

Abstract Surface-to-borehole spectral ratios (SBSRs) observed at vertical arrays often exhibit substantial event-to-event variability, even for weak motions within the nominally linear range. This variability matters, because one-dimensional (1D) site-response analysis assumes a stable transfer func...

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Päätekijät:	Masashi Aoki, Yu Yamamoto, Ryoichi Tokumitsu, Yasuo Uchiyama, Nobuo Takai
Aineistotyyppi:	Artigo
Kieli:	Inglês
Julkaistu:	SpringerOpen 2026-07-01
Sarja:	Earth, Planets and Space
Aiheet:	Surface-to-borehole spectral ratio Azimuthal variation Twofold spectral ratio Site amplification Site-specific variability KiK-net
Linkit:	https://doi.org/10.1186/s40623-026-02494-9
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