M4.6 Earthquake near South Shetland Islands — October 27, 2020
2020-10-27 15:01:04 UTC (2020-10-27) · approx. 11:01 AM UTC-4 local
On October 27, 2020 at 15:01 UTC, a magnitude 4.6 shallow crustal earthquake struck near South Shetland Islands, at a depth of 10.0 km and coordinates -62.3277°, -58.5250°.
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
-58.5250°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near South Shetland Islands?
The magnitude 4.6 earthquake that struck near South Shetland Islands on October 27, 2020 at 15:01 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 -62.3277°, -58.5250°, which is near South Shetland Islands.
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: us7000c82n). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, October 27, 2020). M4.6 Earthquake near South Shetland Islands — October 27, 2020. Retrieved January 9, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000c82n/