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In seismology, an aftershock is a smaller earthquake that follows a larger earthquake, in the same area of the main shock, caused as the displaced crust adjusts to the effects of the main shock.
Following a significant earthquake, this aftershock forecast can provide situational awareness of the expected number of aftershocks, as well as the probability of subsequent larger earthquakes. Specifically, we forecast: the expected number of smaller aftershocks that may be felt (M3+),
2 de may. de 2024 · Aftershock Forecast Overview. Explanations for all the aftershock forecast information associated with a particular earthquake. Aftershock Forecast Scientific Background. Read the technical details about how the forecasts are calculated. Automatic Forecast Update Schedule. View the schedule for automatic forecast updates.
4 de may. de 2024 · Aftershock, any of several lower-magnitude earthquakes that follow the main shock of a larger earthquake. An aftershock results from the sudden change in stress occurring within and between rocks and the previous release of stress brought on by the principal earthquake.
- John P. Rafferty
Aftershocks are themselves earthquakes, but they are more accurately described as the lower-magnitude (or lower-intensity) tremors that follow the principal earthquake or main shock (that is, the largest earthquake in a sequence of earthquakes).
- John P. Rafferty
10 de jun. de 2022 · Megathrust earthquakes release and transfer stress that has accumulated over hundreds of years, leading to large aftershocks that can be highly destructive. Understanding the spatiotemporal...
5 de abr. de 2024 · The U.S.G.S. forecasts a 45 percent chance of an aftershock of magnitude-3 or larger in the next week. The odds rise to 66 percent over the next year. Is this a precursor to a devastating...
