M4.7 Earthquake 24 km SSW of Ger?sh, Iran — December 11, 2020
2020-12-11 20:47:53 UTC (2020-12-11) · approx. 12:47 AM UTC+4 local
On December 11, 2020 at 20:47 UTC, a magnitude 4.7 shallow crustal earthquake struck 24 km SSW of Ger?sh, Iran, at a depth of 10.0 km and coordinates 27.4609°, 54.0437°.
Physical scale: An earthquake of magnitude 4.7 releases seismic energy equivalent to roughly 169 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.1 km — a useful intuition for the size of the slip patch on the fault.
The epicenter is located in Iran, a region characterized by the Zagros fold-and-thrust belt, where the Arabian Plate collides with Eurasia at 20-25 mm per year. The nearest mapped fault system is the Zagros Fault. View all earthquakes in Iran.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
54.0437°E
Technical Information
Common Questions
How strong was the magnitude 4.7 earthquake near Ger?sh, Iran?
The magnitude 4.7 earthquake that struck 24 km SSW of Ger?sh, Iran on December 11, 2020 at 20:47 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 27.4609°, 54.0437°, which is 24 km SSW of Ger?sh, Iran. View all earthquakes in Iran.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.7 earthquakes can continue for several days and gradually diminish over time.
Has Iran had earthquakes this big before?
The largest recorded earthquake in Iran was the M7.8 Tabas earthquake of September 16, 1978. Today's magnitude 4.7 event is significantly smaller than that historical record.
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Location
Authoritative source: USGS event page (event ID: us7000cqdz). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, December 11, 2020). M4.7 Earthquake 24 km SSW of Ger?sh, Iran — December 11, 2020. Retrieved February 20, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000cqdz/