M4.6 Earthquake 210 km W of Longyearbyen, Svalbard and Jan Mayen — November 23, 2023
2023-11-23 22:01:56 UTC (2023-11-23) · approx. 10:01 PM UTC+0 local
On November 23, 2023 at 22:01 UTC, a magnitude 4.6 shallow crustal earthquake struck 210 km W of Longyearbyen, Svalbard and Jan Mayen, at a depth of 10.0 km and coordinates 78.6506°, 6.4874°. This earthquake was detected by 35 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
6.4874°E
Technical Information
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Common Questions
How strong was the magnitude 4.6 earthquake near Longyearbyen, Svalbard and Jan Mayen?
The magnitude 4.6 earthquake that struck 210 km W of Longyearbyen, Svalbard and Jan Mayen on November 23, 2023 at 22:01 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 78.6506°, 6.4874°, which is 210 km W of Longyearbyen, Svalbard and Jan Mayen.
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: us6000lqct). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, November 23, 2023). M4.6 Earthquake 210 km W of Longyearbyen, Svalbard and Jan Mayen — November 23, 2023. Retrieved February 1, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000lqct/