Copyright Information: All images are in the public domain and available for free. If you use this image, credit NOAA/NGDC, Joe Dellinger. |
View down 6th Street, across from Dunne Memorial Park. Note the bend in the crack down the middle of the street. This indicates that the fault crosses the street perpendicular to the street's center line. Image Credit: Joe Dellinger. Photo Date: August 11, 1990 Seismic creep is the constant or periodic movement on a fault as contrasted with the sudden rupture associated with an earthquake. It is a usually slow deformation of rock resulting from constant stress being applied over a period of time. Sometimes aseismic slip is observed at the ground surface along a ruptured fault that has produced a substantial earthquake. Examples are from the Hollister and Hayward, California, region. Several of the slides are split images of a location, comparing fault movement over the years. |
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