The “Nakamura method” is a technique for estimating the resonance frequency and amplification of ground motions influenced by a surface layer. These influences are calculated by dividing the spectrum of the horizontal component by the spectrum of the vertical component (i.e., horizontal‐to‐vertical [H/V] spectral ratio [HVSR]) of microtremors or earthquake motions. Each element of the method had originated in Japanese publications (e.g., Nakamura and Saito, 1983), and then summarized in English articles (Nakamura, 1989, 2000, 2008, 2009). Although the applicably of the Nakamura method has been widely cited, there still exists a fundamental misconception...

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