Wednesday, Sep 12, 2012

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. ... [more]

Tuesday, Sep 11, 2012

Another small swarm of quakes occurred on 10 Sep and then ceased. At the moment, seismicity is again low. [more]

Sunday, Sep 09, 2012

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. [more]

Wednesday, Sep 05, 2012

Weak volcanic quakes concentrated SE of the main dome at depths between 3.0 - 9.5 km occurred during the past week. [more]

Wednesday, Aug 29, 2012

No significant changes have been occurring. Weak seismic unrest continues at Cerro Machín with some small volcanic quakes clustered at depths between 3-6 km south and southwest under the main summit. The largest event was a magnitude 0.55 on 22 August at 08:27 local time. [more]