M4.5 Earthquake near Indian Ocean Triple Junction — September 22, 2023
2023-09-22 18:29:08 UTC (2023-09-22) · approx. 11:29 PM UTC+5 local
On September 22, 2023 at 18:29 UTC, a magnitude 4.5 shallow crustal earthquake struck near Indian Ocean Triple Junction, at a depth of 10.0 km and coordinates -26.0336°, 70.4567°. This earthquake was detected by 40 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
70.4567°E
Technical Information
Common Questions
How strong was the magnitude 4.5 earthquake near Indian Ocean Triple Junction?
The magnitude 4.5 earthquake that struck near Indian Ocean Triple Junction on September 22, 2023 at 18:29 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 -26.0336°, 70.4567°, which is near Indian Ocean Triple Junction.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Authoritative source: USGS event page (event ID: us6000lb5c). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 22, 2023). M4.5 Earthquake near Indian Ocean Triple Junction — September 22, 2023. Retrieved December 2, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000lb5c/