M4.8 Earthquake in the Norfolk Island, Australia region — September 2, 2022
2022-09-02 22:06:23 UTC (2022-09-02) · approx. 10:06 AM UTC+12 local
On September 2, 2022 at 22:06 UTC, a magnitude 4.8 shallow crustal earthquake struck in the Norfolk Island, Australia region, at a depth of 10.0 km and coordinates -29.7695°, 172.6512°. This earthquake was detected by 19 seismic stations with excellent 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
172.6512°E
Technical Information
Common Questions
How strong was the magnitude 4.8 earthquake in the Norfolk Island, Australia region?
The magnitude 4.8 earthquake that struck in the Norfolk Island, Australia region on September 2, 2022 at 22:06 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 -29.7695°, 172.6512°, which is in the Norfolk Island, Australia region.
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.
Authoritative source: USGS event page (event ID: us6000iifh). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, September 2, 2022). M4.8 Earthquake in the Norfolk Island, Australia region — September 2, 2022. Retrieved November 6, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000iifh/