M4.9 Earthquake 121 km W of Aykol, China — February 4, 2024
2024-02-04 01:18:58 UTC (2024-02-04) · approx. 6:18 AM UTC+5 local
On February 4, 2024 at 01:18 UTC, a magnitude 4.9 shallow crustal earthquake struck 121 km W of Aykol, China, at a depth of 10.0 km and coordinates 41.1733°, 78.7218°. This earthquake was detected by 86 seismic stations with good location accuracy and was assigned a USGS significance rating of 369, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
78.7218°E
Technical Information
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Common Questions
How strong was the magnitude 4.9 earthquake near Aykol, China?
The magnitude 4.9 earthquake that struck 121 km W of Aykol, China on February 4, 2024 at 01:18 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 41.1733°, 78.7218°, which is 121 km W of Aykol, China.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.
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Location
Authoritative source: USGS event page (event ID: us7000lwuq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2024, February 4, 2024). M4.9 Earthquake 121 km W of Aykol, China — February 4, 2024. Retrieved April 13, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lwuq/