Abstract
To demonstrate the feasibility of earthquake early warning (EEW) in California, we have developed and implemented the CISN ShakeAlert demonstration system. A Decision Module combines estimates and uncertainties determined by three algorithms implemented in parallel, \(\tau _\mathrm{{c}}-\mathrm{{P}}_\mathrm{{d}}\) Onsite, Virtual Seismologist, and ElarmS, to calculate and report at a given time the most probable earthquake magnitude and location, as well as the likelihood of correct alarm. A User Display receives the alert messages in real-time, calculates the expected local shaking intensity, and displays the information on a map. Currently, CISN ShakeAlert is being tested by \(\sim \)70 individuals and test users from industries and emergency response organizations in California. During the next 3 years we plan to expand this demonstration warning system to the entire US West Coast.
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Acknowledgments
This work is funded through contracts G09AC00258, G09AC00259, G09AC00255, and G09AC00256 from USGS/ANSS to the California Institute of Technology (Caltech), UC Berkeley, USC/SCEC, and ETH. It is also funded by grants from the Gordon and Betty Moore Foundation to Caltech and UC Berkeley. USC/SCEC received additional funding through SCEC3 (NSF Cooperative Agreement EAR-0529922 and USGS Cooperative Agreement 07HQAG0008). This is SCEC contribution #1641 and contribution #10072 of the Seismological Laboratory, Geological and Planetary Sciences at Caltech.
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Böse, M. et al. (2014). CISN ShakeAlert: An Earthquake Early Warning Demonstration System for California. In: Wenzel, F., Zschau, J. (eds) Early Warning for Geological Disasters. Advanced Technologies in Earth Sciences. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-12233-0_3
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