M4.2 Earthquake 47 km ESE of Ambunti, Papua New Guinea — September 12, 2023
2023-09-12 19:10:08 UTC (2023-09-12) · approx. 5:10 AM UTC+10 local
On September 12, 2023 at 19:10 UTC, a magnitude 4.2 intermediate depth earthquake struck 47 km ESE of Ambunti, Papua New Guinea, at a depth of 81.9 km and coordinates -4.3103°, 143.2341°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
143.2341°E
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Common Questions
How strong was the magnitude 4.2 earthquake near Ambunti, Papua New Guinea?
The magnitude 4.2 earthquake that struck 47 km ESE of Ambunti, Papua New Guinea on September 12, 2023 at 19:10 UTC had a depth of 81.9 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 4.2 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000kvzm). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 12, 2023). M4.2 Earthquake 47 km ESE of Ambunti, Papua New Guinea — September 12, 2023. Retrieved November 18, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kvzm/