Revision history for U.S. Geological Survey Fact Sheet 2014-3083

By Erin R. Burkett, Douglas D. Given, and Lucile M. Jones

ShakeAlert - An Earthquake Early Warning System for the United States West Coast

Suggested citation:
Burkett, E.R., Given, D.G., and Jones, L.M., 2014, ShakeAlert—-An earthquake early warning system for the United States West Coast (ver. 1.2, February 2017): U.S. Geological Survey Fact Sheet 2014-3083, 4 p., https://doi.org/10.3133/fs20143083.

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Posted online August 29, 2014
  
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Revised and reposted June 23, 2016, version 1.1 

The text was modified on all pages of this fact sheet to reflect language that supports updated ShakeAlert testing and performance, most notably in the "Future Developments" section. In the second paragraph of this section on p. 3, a new first sentence was added-Ongoing improvements to the sensor networks and data processing centers allowed the ShakeAlert system to advance from a "demonstration" to a "production prototype" phase in February 2016, allowing selected users to develop pilot implementations that take protective actions. 

A color glitch was removed from the opening ShakeAlert figure on p. 1. On the West Coast map on p. 2, the color panel below "Earthquake Hazard Levels" was relabeled: instead of 0-10, 10-20, and so on, which previously appeared below each colored box, the borders between boxes are labeled as 0, 10, 20, and so on.

A full copyedit was done on the updated fact sheet, and corrections for grammar, punctuation, and consistent terminology were also applied.

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Revised and reposted February 2017, version 1.2 

Contact changed to Robert de Groot. University of Oregon added as cooperator. USGS URLs updated to be https.
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