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Seismic Intensity Estimation of Tall Buildings in Earthquake Early Warning System

Author: M. H. Cheng & T. H. Heaton Department of Mechanical and Civil Engineering, California Institute of Technology, USA R. W. Graves U.S. Geological Survey, USA | Size: 688 KB | Format: PDF | Quality: Unspecified | Year: 2012 | pages: 10

In California, United States, an earthquake early warning system is currently being tested through the California Integrated Seismic Network (CISN) (http://www.cisn.org/eew/CISN_page.html). The system aims to provide warnings in seconds to tens of seconds prior to the occurrence of ground shaking; since the system broadcasts the location and time of the earthquake, user software can estimate the arrival time and intensity of the expected S-wave. However, the shaking experienced by a user in a tall building will be significantly different from that on the ground and this shaking can change significantly from one building to another and also from one floor to another. This paper shows a robust and fast method to predict the characteristics of shaking that can be expected in tall buildings.

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