M4.6 Earthquake near Mid-Indian Ridge — September 23, 2023
2023-09-23 00:37:41 UTC (2023-09-23) · approx. 5:37 AM UTC+5 local
On September 23, 2023 at 00:37 UTC, a magnitude 4.6 shallow crustal earthquake struck near Mid-Indian Ridge, at a depth of 10.0 km and coordinates -25.7399°, 70.4012°. This earthquake was detected by 16 seismic stations with good location accuracy and was assigned a USGS significance rating of 326, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
70.4012°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Mid-Indian Ridge?
The magnitude 4.6 earthquake that struck near Mid-Indian Ridge on September 23, 2023 at 00:37 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at -25.7399°, 70.4012°, which is near Mid-Indian Ridge.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
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Location
Authoritative source: USGS event page (event ID: us6000lbdk). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 23, 2023). M4.6 Earthquake near Mid-Indian Ridge — September 23, 2023. Retrieved December 2, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lbdk/