M4.8 Earthquake near Kuril Islands — November 23, 2022
2022-11-23 22:32:58 UTC (2022-11-23) · approx. 8:32 AM UTC+10 local
Aftershock of the M5.1 mainshock.
On November 23, 2022 at 22:32 UTC, a magnitude 4.8 intermediate depth earthquake struck near Kuril Islands, at a depth of 105.0 km and coordinates 46.5354°, 151.2760°. This earthquake was detected by 117 seismic stations with good location accuracy and was assigned a USGS significance rating of 354, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.1 mainshock that occurred 19 days ago near Kuril Islands. Since the mainshock, the USGS has recorded 0 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
151.2760°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.8 earthquake near Kuril Islands?
The magnitude 4.8 earthquake that struck near Kuril Islands on November 23, 2022 at 22:32 UTC had a depth of 105.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 46.5354°, 151.2760°, which is near Kuril Islands.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.1 one earlier?
No. This magnitude 4.8 earthquake is an aftershock of the larger magnitude 5.1 mainshock that occurred earlier near Kuril Islands. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
Actions
Authoritative source: USGS event page (event ID: us7000irxs). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, November 23, 2022). M4.8 Earthquake near Kuril Islands — November 23, 2022. Retrieved January 30, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000irxs/