Regression analysis of Vs30 using topographic attributes from a 50-m DEM

Junko Iwahashi, Izumi Kamiya, Masashi Matsuoka

doi:10.1016/j.geomorph.2009.11.004

Regression analysis of Vs30 using topographic attributes from a 50-m DEM

DOI Web Site Web Site 被引用文献3件

書誌事項

公開日: 2010-04

権利情報

https://www.elsevier.com/tdm/userlicense/1.0/

DOI

10.1016/j.geomorph.2009.11.004

公開者: Elsevier BV

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説明

Abstract The average shear wave velocity for the top 30 m (Vs30) is one of the simple predictors of earthquake ground motion amplification. We performed a multiple linear regression analysis of the logarithm of observed Vs30 at 1646 locations in Japan with three topographic attributes (slope gradient, surface texture, and the logarithm of elevation) calculated from a 50-m DEM. A Vs30 map was created using the partial regression coefficients. The determination coefficient was 0.318. The development of the estimation method of Vs30 from a DEM will be useful for earthquake vulnerability assessment.