M4.4 Earthquake near western Indian-Antarctic Ridge — March 31, 2023
2023-03-31 22:57:38 UTC (2023-03-31) · approx. 6:57 AM UTC+8 local
On March 31, 2023 at 22:57 UTC, a magnitude 4.4 shallow crustal earthquake struck near western Indian-Antarctic Ridge, at a depth of 10.0 km and coordinates -50.2415°, 114.7660°.
Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
114.7660°E
Technical Information
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Common Questions
How strong was the magnitude 4.4 earthquake near western Indian-Antarctic Ridge?
The magnitude 4.4 earthquake that struck near western Indian-Antarctic Ridge on March 31, 2023 at 22:57 UTC had a depth of 10.0 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 4.4 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.4 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000k24h). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, March 31, 2023). M4.4 Earthquake near western Indian-Antarctic Ridge — March 31, 2023. Retrieved January 18, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000k24h/