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Comment: 15:21 - 16:20 (00:59)
Source: Annenberg/CPB Resources - Earth Revealed - 9. Earthquakes
Keywords: Parkfield, earthquake, "San Andreas Fault", magnitude, epicenter, prediction
Our transcription: Given the destructive power of many earthquakes, geologists hope to develop the ability to forecast quakes in time to warn any people who might be in danger, but to do this requires a better understanding of earthquake behavior.
One pastoral stretch of the San Andreas Fault near Parkfield, California, has been especially prone to earthquakes.
Since 1857 residents of this area have been jolted by moderately strong earthquakes on an average of once every 21 to 22 years.
Besides recurring at fairly regular intervals, Parkfield earthquakes also resemble one another in their magnitudes, lengths of fault rupture, and epicenter locations.
For this reason, the Parkfield area seems like an ideal setting for an earthquake research project.
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