Earthquake Study Challenges Conventional Wisdom: 'New Way of Understanding'

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Researchers analyzed fault lines in California and found that geometrically complicated fault zones lead to more ground movement.

The geometric structure of rocks where earthquakes occur could play a key role in determining their location and strength, researchers have found.A study, carried out by geologists at Brown University, suggests that the alignment of rock formations within fault zones may help to explain why seismic activity happens.The research, which is based on an analysis of fault lines in California, challenges the traditional theory that the type of friction at faults determines whether earthquakes occur.

Geological Survey's Quaternary Fault Database and the California Geological Survey. This included the San Andreas fault, the boundary between the Pacific Plate and the North American Plate and one of the largest faults in the world.They found that geometrically complicated fault zones—where the structures weren't aligned and went in different directions—had stronger ground movement than fault zones that were simpler.

 

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