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METHODS, SYSTEMS, AND COMPUTER-READABLE MEDIA FOR GENERATING SEISMIC EVENT TIME HISTORIES

United States Patent Application

20090259405
A1
View the Complete Application at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
Methods, systems, and computer-readable media generate acceleration time histories. An initial acceleration history is applied to a response model with natural frequencies across a spectrum of interest to develop a displacement response. Low-frequency enhancement signals are determined by comparing the displacement response to a standard displacement response. The enhancement signals are combined with the initial acceleration history to develop a second acceleration history, which is applied to the response model to develop an acceleration response. High-frequency enhancement signals are determined by comparing the acceleration response to a standard acceleration response. The enhancement signals are combined with the second acceleration history to develop a desired acceleration history. Acceleration histories also may be created by adding random phase angles at various frequencies to an initial acceleration history in the frequency domain, which is then converted to the time domain and scaled to generate a low-correlation history.
Spears, Robert E. (Idaho Falls, ID)
BATTELLE ENERGY ALLIANCE, LLC (IDAHO FALLS ID)
12/ 103,295
April 15, 2008
GOVERNMENT RIGHTS [0001] The United States Government has certain rights in this invention pursuant to Contract No. DE-AC07-05-ID14517, between the United States Department of Energy and Battelle Energy Alliance, LLC.