M4.7 Earthquake 103 km N of Dunbage, China — August 20, 2023
2023-08-20 15:28:22 UTC (2023-08-20) · approx. 8:28 PM UTC+5 local
On August 20, 2023 at 15:28 UTC, a magnitude 4.7 shallow crustal earthquake struck 103 km N of Dunbage, China, at a depth of 10.0 km and coordinates 39.7778°, 77.6881°. This earthquake was detected by 69 seismic stations with good location accuracy and was assigned a USGS significance rating of 340, placing it among routine seismic activity.
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.
Earthquake Details
77.6881°E
Technical Information
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Common Questions
How strong was the magnitude 4.7 earthquake near Dunbage, China?
The magnitude 4.7 earthquake that struck 103 km N of Dunbage, China on August 20, 2023 at 15:28 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 39.7778°, 77.6881°, which is 103 km N of Dunbage, China.
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.
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Location
Authoritative source: USGS event page (event ID: us7000kpmr). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 20, 2023). M4.7 Earthquake 103 km N of Dunbage, China — August 20, 2023. Retrieved October 28, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kpmr/