Larger earthquakes generate their own media these days. But inquires about the South Napa, California earthquake prompted me to return [briefly] to this blog with a short list of suggested resources related to the event.

According to the USGS, the earthquake (Mw=6.0) is the largest earthquake to strike the San Francisco Bay Area since the 1989 Loma Prieta earthquake (Mw=6.9). An earlier moderate event had caused localized damage in the Napa and Yountville area fourteen years ago on September 3, 2000 (Mw=5.0). The 2014 event was a shallow-focus earthquake (~11 km depth) with its epicenter located about 8 km SSW of Napa, a city of about 77,000 people in the greater San Francisco Bay region on the northeastern shore of San Pablo Bay. This area is within a greater San Andreas Fault system, between two other active fault systems: the Hayward-Rodgers Creek system to the west, and the Concord-Green Valley system to the east. Identified local faults include the West Napa and the Carneros-Franklin faults. The area is widely known for wine production. NAPA-intensity2

Both California Governor Gerry Brown and U.S. President Barack Obama declared an emergency and a major disaster for Napa and Solano counties. Property damage is fairly modest (about US$ 300 million at this time and rising slowly, but well down from a preliminary US$ 1 billion estimate on August 25) although some serious structural and non-structural building damage to older, masonry structures in particular occurred. Casualties are limited to one mortality. Bridge damage appears minimal and other lifeline interruptions appear moderate to light. Cases of soil liquefaction are remarkably rare.

A Pacific Earthquake Engineering Research (PEER) Center Reconnaissance team reported some preliminary observations on Monday, September 15, 2014 in a joint PEER – Earthquake Engineering Research Institute (EERI) briefing . The Geotechnical Extreme Event Reconnaissance (GEER) released an electronic reconnaissance report following their extensive geotechnical observations in the epicentral area. Recently PEER published its preliminary reconnaissance report (PEER 2014/13) of the event. The processed strong motion recordings for the event have been available for some time from CESMD. Recent press releases for entities like the Lawrence Livermore National LaboratoryCalTech’s NASA Jet Propulsion Laboratory in Pasadena and U. C. Berkeley’s consortium on an experimental earthquake warning system for California suggest other directions of subsequent seismic research related to this South Napa event.

Access the NISEE e-library

Posted by cdj On June - 7 - 2010
From anywhere in the world, search the NISEE e-library and earthquake engineering archive for low-cost access to over 42,200 digital research materials (reports, images, data, software archive, lab-test movies, etc.) including: PEER Reports, UCB/Geoengineering Reports, UCB/SEMM Reports, UCB/EERC Reports, and more. Register to subscribe to the NISEE e-library and online archive.

From all UC campus locations, access subscribed, peer-reviewed journal, e-content using the UC-eLinks symbol in the specialized Earthquake Engineering Abstracts, (commercially available on the CSA-Illumina platform), or, more broadly, in Google Scholar. A list of subscribed e-journal titles and assistance with UCB proxy or VPN connections are provided by the UC Berkeley library. UC-eLinks

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