2014•Unpublished venueRequires access

On Strong ground motion and macro-seismic intensity of Lushan Ms7.0 Earthquake

Yushi Wang, Xiaojun Li

Abstract

We analyzed the strong-motion records and macro-seismic intensity of Lushan Ms7.0 (Mw6.6 by USGS) earthquake shocking the middle of Sichuan province, China at 08:02 Beijing Time (00:02 UTC) on April 20, 2013. The distribution of PGA, instrumental seismic intensity, as well as spectral accelerations derived from strong-motion records did not revealed that significant directionality effect as the macro-seismic intensity map of this earthquake. More illustrations on the philosophy of macroseismic intensity evaluation in China indicated that the macro-seismic intensity below VII was not a reliable index of strong-motion severity in China.

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Key concepts: Mercalli intensity scale, Seismology, Beijing, Geology, Intensity (physics), Ground motion, Environmental Seismic Intensity scale, China