IRSN report on the Napa Earthquake, California (M6, 2014-08-24)

Our colleagues Stéphane Baize and Oona Scotti from the French IRSN finished a report on the 2014 Napa Earthquake: Post-seismic survey report, with special focus on surface faulting. On 24 August 2014, an earthquake of magnitude Mw6 occurred on the West Napa Fault in shallow depth. The quake caused significant damage, an interesting pattern of surface ruptures, and the immediate attention of hundreds of geologists. The primary and secondary effects were mapped only hours after the event, which turned out to be extremely important – a large amount of afterslip was recorded in the following days. The earthquake was not only recorded by a huge seismometer network, but the ground motion was also captured by GPS sensors and InSAR images. The new IRSN report is especially concerned with the surface faulting hazard, since this agency is responsible for the safety of nuclear installations in France. The report can be downloaded here: The Napa Earthquake, California (M6, 24-08-2014) (PDF, 3.5 mb).

Further reading:

• South Napa, USA earthquake clearinghouse: http://www.eqclearinghouse.org/2014-08-24-south-napa/preliminary-reports/
• Geotechnical Extreme Events Reconnaissance (GEER) Association: http://www.geerassociation.org/GEER_Post%20EQ%20Reports/SouthNapa_2014/index.html
• Seismological Research Letters focus section on the Napa Earthquake: http://srl.geoscienceworld.org/content/86/2A.toc#content-block

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