M4.3 Earthquake 129 km SSE of Kuril’sk, Russia — December 9, 2023
2023-12-09 21:30:03 UTC (2023-12-09) · approx. 7:30 AM UTC+10 local
On December 9, 2023 at 21:30 UTC, a magnitude 4.3 shallow crustal earthquake struck 129 km SSE of Kuril’sk, Russia, at a depth of 42.8 km and coordinates 44.2226°, 148.6956°.
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
148.6956°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.3 earthquake near Kuril’sk, Russia?
The magnitude 4.3 earthquake that struck 129 km SSE of Kuril’sk, Russia on December 9, 2023 at 21:30 UTC had a depth of 42.8 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.
Actions
Understanding This Data
Magnitude 4.3 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000lj1m). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, December 9, 2023). M4.3 Earthquake 129 km SSE of Kuril’sk, Russia — December 9, 2023. Retrieved February 10, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lj1m/