4.3

M4.3 Earthquake 36 km ENE of Kandrian, Papua New GuineaFebruary 25, 2023

2023-02-25 21:55:47 UTC (2023-02-25) · approx. 7:55 AM UTC+10 local

MagnitudeM4.3(mb)
Time21:55 UTC7:55 AM UTC+10
Depth35.0 kmshallow crustal
Coordinates-6.109°, 149.865°
Felt byNo felt reports
Status✓ Reviewed by USGS

On February 25, 2023 at 21:55 UTC, a magnitude 4.3 shallow crustal earthquake struck 36 km ENE of Kandrian, Papua New Guinea, at a depth of 35.0 km and coordinates -6.1087°, 149.8650°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at -6.11°, 149.87°

Earthquake Details

Magnitude
4.3 mb
Depth
35.0 km
shallow crustal
Location
-6.1087°N
149.8650°E

Technical Information

Event ID
us6000jrlz
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
25
Azimuthal Gap
101.0°
Min Station Distance
2.978°
RMS Residual
0.73 sec
Last Updated
2023-04-29 21:57:40 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Kandrian, Papua New Guinea?

The magnitude 4.3 earthquake that struck 36 km ENE of Kandrian, Papua New Guinea on February 25, 2023 at 21:55 UTC had a depth of 35.0 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 4.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.3 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us6000jrlz). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, February 25, 2023). M4.3 Earthquake 36 km ENE of Kandrian, Papua New GuineaFebruary 25, 2023. Retrieved April 29, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jrlz/