M3.8 Earthquake 19 km SE of Gyeongju, South Korea — November 29, 2023
2023-11-29 19:55:24 UTC (2023-11-29) · approx. 4:55 AM UTC+9 local
Felt by 21 people across nearby locations.
On November 29, 2023 at 19:55 UTC, a magnitude 3.8 shallow crustal earthquake struck 19 km SE of Gyeongju, South Korea, at a depth of 10.0 km and coordinates 35.7301°, 129.3778°. This earthquake was detected by 13 seismic stations with good location accuracy and was assigned a USGS significance rating of 231, placing it among routine seismic activity.
Physical scale: An earthquake of magnitude 3.8 releases seismic energy equivalent to roughly 7.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 252 m — a useful intuition for the size of the slip patch on the fault.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 21 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
129.3778°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 3.8 earthquake near Gyeongju, South Korea?
The magnitude 3.8 earthquake that struck 19 km SE of Gyeongju, South Korea on November 29, 2023 at 19:55 UTC had a depth of 10.0 km. For context, this was a minor earthquake typically detected only by instruments.
Where did the earthquake occur?
The earthquake epicenter was located at 35.7301°, 129.3778°, which is 19 km SE of Gyeongju, South Korea.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.8 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us7000lesa). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, November 29, 2023). M3.8 Earthquake 19 km SE of Gyeongju, South Korea — November 29, 2023. Retrieved February 6, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lesa/