M4.6 Earthquake 42 km S of Lambaréné, Gabon — September 25, 2023
2023-09-25 01:28:54 UTC (2023-09-25) · approx. 2:28 AM UTC+1 local
On September 25, 2023 at 01:28 UTC, a magnitude 4.6 shallow crustal earthquake struck 42 km S of Lambaréné, Gabon, at a depth of 10.0 km and coordinates -1.0840°, 10.1909°. This earthquake was detected by 61 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
10.1909°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Lambaréné, Gabon?
The magnitude 4.6 earthquake that struck 42 km S of Lambaréné, Gabon on September 25, 2023 at 01:28 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -1.0840°, 10.1909°, which is 42 km S of Lambaréné, Gabon.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000kxwr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 25, 2023). M4.6 Earthquake 42 km S of Lambaréné, Gabon — September 25, 2023. Retrieved December 9, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kxwr/