Far-Reaching Aftershocks

Definition:  Aftershocks are earthquakes that follow the largest shock in an earthquake sequence. They are smaller than the mainshock and within 1-2 rupture lengths distance from the mainshock. Aftershocks can continue over a period of weeks, months, or years. But 115 years?  My husband David and I work with my brother and sister at a location far from San Francisco, California. The sandy… Continue reading Far-Reaching Aftershocks

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