M4.0 Earthquake 23 km S of And?r?n, Turkey — July 17, 2020
2020-07-17 21:32:23 UTC (2020-07-17) · approx. 11:32 PM UTC+2 local
On July 17, 2020 at 21:32 UTC, a magnitude 4.0 shallow crustal earthquake struck 23 km S of And?r?n, Turkey, at a depth of 10.0 km and coordinates 37.3676°, 36.3699°.
Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.
This earthquake is part of an ongoing aftershock sequence following the magnitude 5.0 mainshock that occurred 6 days ago 21 km ESE of Feke, Turkey. Since the mainshock, the USGS has recorded 6 aftershocks in this area. Aftershock activity is expected to continue for days to weeks as stresses on surrounding faults redistribute.
Earthquake Details
36.3699°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near And?r?n, Turkey?
The magnitude 4.0 earthquake that struck 23 km S of And?r?n, Turkey on July 17, 2020 at 21:32 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.
Is this the same earthquake as the M5.0 one earlier?
No. This magnitude 4.0 earthquake is an aftershock of the larger magnitude 5.0 mainshock that occurred earlier 21 km ESE of Feke, Turkey. Aftershocks are smaller earthquakes triggered by stress changes from the mainshock.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us6000b2u9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, July 17, 2020). M4.0 Earthquake 23 km S of And?r?n, Turkey — July 17, 2020. Retrieved September 26, 2020 from https://www.earthquaketracker.org/earthquakes/event/us6000b2u9/