Global & Disaster Medicine

The Hayward Fault: More dangerous than the San Andreas fault?

LA Times

“…..A landmark report by the U.S. Geological Survey estimates that at least 800 people could be killed and 18,000 more injured in a hypothetical magnitude 7 earthquake on the Hayward fault centered below Oakland…..”

USGS

region map

Map View

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The detailed, perspective views show the ground shaking from a viewpoint two miles (three kilometers) above the earth looking towards each location. In each movie the left panel shows a map view of the area with the fault highlighted in red, the epicenter (location where the rupture starts) identified by the red ball, and the location shown in the right panel labeled in yellow. In the right panel the deformation of the ground associated with the propagation of the seismic waves is exaggerated by a factor of 1000. The topography has been exaggerated by a factor of four to make the hills and mountains more readily visible.

Click on the map to view the normal resolution movie for that location. HD versions are available below.

The ground moves about 6-12 inches (0.2-0.3 m) at locations close to the fault. The ground also moves about 12 inches (0.3 m) in Livermore.

Berkeley (looking south)

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Oakland (looking north)

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Fremont (looking north)

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San Jose (looking north)

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Livermore (looking west)

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The colors indicate the peak intensity of the shaking up to the current time in the movie at each location. See Explanation of Colors for a more detailed description of the color scheme.

The movies are available in two different resolutions. The normal resolution versions are typically 10 MB in size. The high definition (HD) versions are typically 30 MB in size and are best viewed on high resolution displays.

These images and movies are in the public domain and may be used freely. Please credit the U.S Geological Survey.

 


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