M4.8 Earthquake 121 km ENE of Tadine, New Caledonia — October 20, 2022
2022-10-20 19:34:07 UTC (2022-10-20) · approx. 6:34 AM UTC+11 local
On October 20, 2022 at 19:34 UTC, a magnitude 4.8 shallow crustal earthquake struck 121 km ENE of Tadine, New Caledonia, at a depth of 10.0 km and coordinates -21.1848°, 168.9867°. This earthquake was detected by 32 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.
Earthquake Details
168.9867°E
Technical Information
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Common Questions
How strong was the magnitude 4.8 earthquake near Tadine, New Caledonia?
The magnitude 4.8 earthquake that struck 121 km ENE of Tadine, New Caledonia on October 20, 2022 at 19:34 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 -21.1848°, 168.9867°, which is 121 km ENE of Tadine, New Caledonia.
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.
Actions
Authoritative source: USGS event page (event ID: us6000iwcw). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, October 20, 2022). M4.8 Earthquake 121 km ENE of Tadine, New Caledonia — October 20, 2022. Retrieved January 18, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000iwcw/