Journal
GEOMORPHOLOGY
Volume 117, Issue 1-2, Pages 202-205Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.geomorph.2009.11.004
Keywords
Vs30; Shear wave; Regression analysis; DEM; Topographic attribute
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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. (C) 2009 Elsevier B.V. All rights reserved.
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