4.5

M4.5 Earthquake 35 km E of Calingasta, Argentina — September 6, 2020

2020-09-06 18:34:00 UTC (2020-09-06) · approx. 1:34 PM UTC-5 local

MagnitudeM4.5(mb)
Time18:34 UTC≈ 1:34 PM UTC-5
Depth121.8 kmintermediate depth
Coordinates-31.276°, -69.054°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 6, 2020 at 18:34 UTC, a magnitude 4.5 intermediate depth earthquake struck 35 km E of Calingasta, Argentina, at a depth of 121.8 km and coordinates -31.2756°, -69.0544°.

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.

Map showing earthquake epicenter at -31.28°, -69.05°

Earthquake Details

Magnitude
4.5 mb
Depth
121.8 km
intermediate depth
Location
-31.2756°N
-69.0544°E

Technical Information

Event ID
us7000bj0j
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Azimuthal Gap
47.0°
Min Station Distance
0.415°
RMS Residual
1.06 sec
Last Updated
2020-11-17 19:44:47 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Calingasta, Argentina?

The magnitude 4.5 earthquake that struck 35 km E of Calingasta, Argentina on September 6, 2020 at 18:34 UTC had a depth of 121.8 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at -31.2756°, -69.0544°, which is 35 km E of Calingasta, Argentina.

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.

Authoritative source: USGS event page (event ID: us7000bj0j). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, September 6, 2020). M4.5 Earthquake 35 km E of Calingasta, Argentina — September 6, 2020. Retrieved November 17, 2020 from https://www.earthquaketracker.org/earthquakes/event/us7000bj0j/