M4.6 Earthquake in the Tristan da Cunha region — August 20, 2020
2020-08-20 17:08:00 UTC (2020-08-20) · approx. 4:08 PM UTC-1 local
On August 20, 2020 at 17:08 UTC, a magnitude 4.6 shallow crustal earthquake struck in the Tristan da Cunha region, at a depth of 10.0 km and coordinates -34.8005°, -14.9024°.
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
-14.9024°E
Technical Information
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Common Questions
How strong was the magnitude 4.6 earthquake in the Tristan da Cunha region?
The magnitude 4.6 earthquake that struck in the Tristan da Cunha region on August 20, 2020 at 17:08 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 -34.8005°, -14.9024°, which is in the Tristan da Cunha region.
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.
Actions
Authoritative source: USGS event page (event ID: us7000bdmb). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, August 20, 2020). M4.6 Earthquake in the Tristan da Cunha region — August 20, 2020. Retrieved October 31, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000bdmb/