M4.3 Earthquake 185 km W of Longyearbyen, Svalbard and Jan Mayen — September 18, 2022
2022-09-18 17:42:47 UTC (2022-09-18) · approx. 6:42 PM UTC+1 local
On September 18, 2022 at 17:42 UTC, a magnitude 4.3 shallow crustal earthquake struck 185 km W of Longyearbyen, Svalbard and Jan Mayen, at a depth of 10.0 km and coordinates 78.1190°, 7.5487°.
Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
7.5487°E
Technical Information
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Common Questions
How strong was the magnitude 4.3 earthquake near Longyearbyen, Svalbard and Jan Mayen?
The magnitude 4.3 earthquake that struck 185 km W of Longyearbyen, Svalbard and Jan Mayen on September 18, 2022 at 17:42 UTC had a depth of 10.0 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 4.3 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000i944). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 18, 2022). M4.3 Earthquake 185 km W of Longyearbyen, Svalbard and Jan Mayen — September 18, 2022. Retrieved November 26, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000i944/