KMA: "Three Foreshocks Occurred Before Magnitude 4.1 Earthquake"

[Asia Economy Reporter Yoo Byung-don] At around 8:27 a.m. on the 29th, a magnitude 4.1 earthquake, the largest earthquake to occur on the Korean Peninsula this year, struck 11 km northeast of Goesan-gun, Chungbuk, preceded by three foreshocks.

According to the Korea Meteorological Administration, about 20 minutes before the magnitude 4.1 earthquake at 8:27:49 a.m., a magnitude 1.6 earthquake occurred at 8:08:14 a.m., followed by magnitude 1.3 and 3.5 earthquakes at 8:09:32 a.m. and 8:27:33 a.m., respectively.

These earthquakes are considered "foreshocks," which are earthquakes that occur within a fault causing a larger earthquake before the mainshock.

The magnitude 4.1 earthquake was first detected by the national seismic observation network 5 seconds after it occurred, and an earthquake alert was issued 23 seconds after the initial detection. When a magnitude 4.9 earthquake occurred 41 km southwest of Seogwipo City, Jeju, on December 14 last year, the alert was issued 12 seconds after the initial detection.

This content was produced with the assistance of AI translation services.