M4.1 Earthquake in the eastern New Guinea region, Papua New Guinea — March 18, 2023
2023-03-18 20:20:10 UTC (2023-03-18) · approx. 6:20 AM UTC+10 local
On March 18, 2023 at 20:20 UTC, a magnitude 4.1 intermediate depth earthquake struck in the eastern New Guinea region, Papua New Guinea, at a depth of 73.8 km and coordinates -6.1243°, 147.5788°.
Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
147.5788°E
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Common Questions
How strong was the magnitude 4.1 earthquake in the eastern New Guinea region, Papua New Guinea?
The magnitude 4.1 earthquake that struck in the eastern New Guinea region, Papua New Guinea on March 18, 2023 at 20:20 UTC had a depth of 73.8 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 4.1 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.1 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000jm7m). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, March 18, 2023). M4.1 Earthquake in the eastern New Guinea region, Papua New Guinea — March 18, 2023. Retrieved May 20, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jm7m/