4.6

M4.6 Earthquake 30 km S of Lambaréné, GabonJanuary 10, 2023

2023-01-10 21:45:14 UTC (2023-01-10) · approx. 10:45 PM UTC+1 local

MagnitudeM4.6(mb)
Time21:45 UTC10:45 PM UTC+1
Depth10.0 kmshallow crustal
Coordinates-0.978°, 10.259°
Felt byNo felt reports
Status✓ Reviewed by USGS

On January 10, 2023 at 21:45 UTC, a magnitude 4.6 shallow crustal earthquake struck 30 km S of Lambaréné, Gabon, at a depth of 10.0 km and coordinates -0.9776°, 10.2588°. This earthquake was detected by 54 seismic stations with good 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.

Map showing earthquake epicenter at -0.98°, 10.26°

Earthquake Details

Magnitude
4.6 mb
Depth
10.0 km
shallow crustal
Location
-0.9776°N
10.2588°E

Technical Information

Event ID
us7000j3i2
Event Type
earthquake
Status
✓ Reviewed
Significance
326
Stations Used
54
Azimuthal Gap
129.0°
Min Station Distance
4.726°
RMS Residual
0.39 sec
Last Updated
2023-03-20 06:03:16 UTC

Common Questions

How strong was the magnitude 4.6 earthquake near Lambaréné, Gabon?

The magnitude 4.6 earthquake that struck 30 km S of Lambaréné, Gabon on January 10, 2023 at 21:45 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 -0.9776°, 10.2588°, which is 30 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.

Authoritative source: USGS event page (event ID: us7000j3i2). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, January 10, 2023). M4.6 Earthquake 30 km S of Lambaréné, GabonJanuary 10, 2023. Retrieved March 20, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000j3i2/