Aftershocks can rattle a region for months after a major earthquake
After a major earthquake, the crust keeps adjusting: aftershocks — sometimes large enough to cause fresh damage — can continue for months or longer as stress redistributes along faults.
Their rate usually decays over time, but people living through the sequence feel the hazard is never quite finished. Scientists use aftershock maps to outline the rupture zone and remaining risk.
One quake is often a chapter, not the whole book. Aftershocks remind communities that Earth’s faults settle slowly after a violent slip.
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