M4.1 Earthquake in the South Sandwich Islands region — December 29, 2022
2022-12-29 22:26:58 UTC (2022-12-29) · approx. 8:26 PM UTC-2 local
On December 29, 2022 at 22:26 UTC, a magnitude 4.1 intermediate depth earthquake struck in the South Sandwich Islands region, at a depth of 150.7 km and coordinates -57.5007°, -27.2481°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
-27.2481°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.1 earthquake in the South Sandwich Islands region?
The magnitude 4.1 earthquake that struck in the South Sandwich Islands region on December 29, 2022 at 22:26 UTC had a depth of 150.7 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.1 earthquakes can continue for several days and gradually diminish over time.
Actions
Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000j3mf). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, December 29, 2022). M4.1 Earthquake in the South Sandwich Islands region — December 29, 2022. Retrieved March 7, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000j3mf/