Mapping a Valparaíso Earthquake from Foreshock to Aftershock
Using seismic data recorded along the Chilean coast, scientists retrace the development of a recent earthquake.
A massive arc of seismic activity—stretching from Australia to Japan, up toward Alaska, and down along the west coast of the Americas—is known among geologists as the Ring of Fire. Roughly 90% of the world’s earthquakes occur there.
In April 2017, a swift but powerful magnitude 7 earthquake hit off the coast of Valparaíso, Chile, near the base of the Ring of Fire. About 2 days before it began, scientists detected intense seismic activity in the region. In a new study, Ruiz et al. zeroed in on this earthquake to better understand the formation, or nucleation, of earthquakes, as scientists do not know exactly why or how earthquakes start, become larger, and stop....more
-- Sarah Witman, Freelance Writer,
- Article Category
- Research Letters
- Solid Earth
Nucleation Phase and Dynamic Inversion of the Mw 6.9 Valparaíso 2017 Earthquake in Central Chile
- First Published:
- | Vol:
- | DOI:
Eos.org: Earth & Space Science News
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