M5.4 Earthquake near Carlsberg Ridge — February 28, 2023
2023-02-28 12:07:30 UTC (2023-02-28) · approx. 4:07 PM UTC+4 local
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On February 28, 2023 at 12:07 UTC, a magnitude 5.4 shallow crustal earthquake struck near Carlsberg Ridge, at a depth of 10.0 km and coordinates 6.6808°, 60.2231°. The USGS PAGER system issued a green alert level for this event, indicating no significant casualties or damage expected. This earthquake was detected by 128 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 449, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 5.4 releases seismic energy equivalent to roughly 2 kilotons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 3.2 km — a useful intuition for the size of the slip patch on the fault.
ShakeMap — predicted shaking intensity
Modeled ground-motion intensity contoured on the Modified Mercalli scale (MMI). Computed by the USGS from the moment-tensor solution and regional ground-motion prediction equations.
Source: U.S. Geological Survey ShakeMap. View interactive ShakeMap on USGS
Earthquake Details
60.2231°E
Technical Information
Common Questions
How strong was the magnitude 5.4 earthquake near Carlsberg Ridge?
The magnitude 5.4 earthquake that struck near Carlsberg Ridge on February 28, 2023 at 12:07 UTC had a depth of 10.0 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 6.6808°, 60.2231°, which is near Carlsberg Ridge.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.4 earthquakes can continue for days to weeks and gradually diminish over time.
Actions
Authoritative source: USGS event page (event ID: us7000jg89). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, February 28, 2023). M5.4 Earthquake near Carlsberg Ridge — February 28, 2023. Retrieved May 8, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jg89/