M4.5 Earthquake 65 km W of San Antonio de los Cobres, Argentina — September 1, 2023
2023-09-01 23:55:09 UTC (2023-09-01) · approx. 7:55 PM UTC-4 local
On September 1, 2023 at 23:55 UTC, a magnitude 4.5 intermediate depth earthquake struck 65 km W of San Antonio de los Cobres, Argentina, at a depth of 191.1 km and coordinates -24.1685°, -66.9573°. This earthquake was detected by 30 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-66.9573°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.5 earthquake near San Antonio de los Cobres, Argentina?
The magnitude 4.5 earthquake that struck 65 km W of San Antonio de los Cobres, Argentina on September 1, 2023 at 23:55 UTC had a depth of 191.1 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -24.1685°, -66.9573°, which is 65 km W of San Antonio de los Cobres, Argentina.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000ksse). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 1, 2023). M4.5 Earthquake 65 km W of San Antonio de los Cobres, Argentina — September 1, 2023. Retrieved November 4, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000ksse/