M3.9 Earthquake 83 km S of San Pedro de Atacama, Chile — August 9, 2022
2022-08-09 21:37:53 UTC (2022-08-09) · approx. 4:37 PM UTC-5 local
On August 9, 2022 at 21:37 UTC, a magnitude 3.9 intermediate depth earthquake struck 83 km S of San Pedro de Atacama, Chile, at a depth of 116.8 km and coordinates -23.6625°, -68.2656°.
Physical scale: An earthquake of magnitude 3.9 releases seismic energy equivalent to roughly 11 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 296 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-68.2656°E
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Common Questions
How strong was the magnitude 3.9 earthquake near San Pedro de Atacama, Chile?
The magnitude 3.9 earthquake that struck 83 km S of San Pedro de Atacama, Chile on August 9, 2022 at 21:37 UTC had a depth of 116.8 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.9 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.9 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000i9it). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, August 9, 2022). M3.9 Earthquake 83 km S of San Pedro de Atacama, Chile — August 9, 2022. Retrieved October 21, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000i9it/