Machin volcano (Colombia) activity update: occasional shallow earthquake swarms
Wed, 12 Sep 2012, 10:0510:05 AM | BY: T
At the moment, seismicity Machin is calm again. INGEOMINAS summarizes the recent 2 earthquake swarms on 9 Sep between 7:30 and 8:30 (local time) and the following day 10 Sep between 07:20 and 14:00.
Seismic signal this morning (CIMA station)
Some of the quakes during these swarms were felt by inhabitants of villages near the volcano. The epicenters of the quakes were clustered at 2-4 km depth W and S of the summit dome, and the largest was the M3.6 event on 9 Sep.
Tue, 11 Sep 2012, 10:05
Another small swarm of quakes occurred on 10 Sep and then ceased. At the moment, seismicity is again low. ... Read all
Sun, 9 Sep 2012, 10:05
At 07:32 local time 9 Sep, a 3.6 magnitude quake occurred at 3.2 km depth beneath the summit of the volcano. Seismicity had been elevated since 8 Sep and stronger than normal seismic activity has been following the quake today. This is the most energetic seismic activity at the volcano for probably more than a year. ... Read all