M4.0 Earthquake near Kepulauan Babar, Indonesia — March 23, 2021
2021-03-23 17:08:43 UTC (2021-03-23) · approx. 2:08 AM UTC+9 local
On March 23, 2021 at 17:08 UTC, a magnitude 4.0 intermediate depth earthquake struck near Kepulauan Babar, Indonesia, at a depth of 138.1 km and coordinates -7.0168°, 129.7565°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
129.7565°E
Technical Information
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Common Questions
How strong was the magnitude 4.0 earthquake near Kepulauan Babar, Indonesia?
The magnitude 4.0 earthquake that struck near Kepulauan Babar, Indonesia on March 23, 2021 at 17:08 UTC had a depth of 138.1 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 4.0 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000dxxb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, March 23, 2021). M4.0 Earthquake near Kepulauan Babar, Indonesia — March 23, 2021. Retrieved June 2, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000dxxb/