Simulation of Long Period Ground Motions for a Large New Madrid Earthquakeby Robert B. Herrmann, St. Louis Univ, United States,
Michael Jost, St. Louis Univ, United States,
Abstract: Ground motions for a large New Madrid earthquake are simulated to provide response spectra in the period range of 0.5-20 seconds for hard rock sites at Chicago and Atlanta. The ground motions are characterized by a long-period pulse corresponding to the fundamental mode surface wave arrival, and by high-frequency waves trapped in the crustal and sedimentary section waveguides. This effort represents the first attempt to model such long-period motions in the central United States at these distances.
Subject Headings: Ground motion | Earthquakes | Surface waves | Seismic waves | Sediment transport | Mathematical models | Response spectra | Rocks | Spain | Europe | Madrid | North America | United States | Illinois | Atlanta | Chicago
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