Word: parkfield
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Dates: during 2010-2019
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...1980s, for example, the USGS partnered with the state of California to study a particularly unstable stretch of the San Andreas fault near the town of Parkfield. Quakes had been occurring in the area every 20 to 25 years or so. The previous one had been in 1966, so scientists predicted another should hit before 1990. They threaded the region with seismometers and other sensors, then sat back and waited for the telltale signal that would give them notice of the coming rumble. The quake never occurred in the 1980s, nor in the 1990s. It was not until 2004 that...