Why Do Earthquakes Cause Aftershocks? Understanding Seismic Activity
The Shaking That Won't Stop
Imagine you're at home when the world starts to tremble. Books fall from shelves, pictures rattle on walls, and your heart pounds. The shaking stops after a few seconds, and you let out a breath. But then, moments later, the floor moves again—a new tremor, then another, and another. This is the reality of aftershocks: the shaking that doesn't simply end when the big one finishes. They can last for days, months, or even years, keeping communities on edge long after the main event. But what's going on under your feet? And why doesn't the Earth just settle down?
What are aftershocks based on the section?
Why Aftershocks Matter: Risks You Need to Know
After a major earthquake, you might assume the danger has passed. That's a dangerous assumption. Aftershocks can cause significant damage to buildings and infrastructure already weakened by the mainshock—a wall that held might collapse during a second jolt.
Why are aftershocks dangerous after a major earthquake?