Volcano activity of September 7, 2012 - Sitkin, Mammoth mountain, Popocatepetl, Pacaya, Fuego and Telica

This (almost) daily post intends to follow up the activity changes of volcanoes all over the world.
This post is written by geologist Richard Wilson who specializes in Volcano seismicity and Armand Vervaeck. Please feel free to tell us about new or changed activity if we haven't written about it. -

September 7, 2012 volcano activity

Little Sitkin volcano (AK) maintains a relatively high level of seismicity today (station LSSA).

A cluster of earthquakes (<M2) occurred overnight at shallow depths beneath the western flank of Mammoth Mountain volcano (CA).

Seismicity and surface activity remain low at Popocatepetl volcano (Mexico).

Pulses of tremor have recently increased in magnitude and become more frequent at Pacaya volcano (Guatemala) (station PCG).

Seismograms from nearby Fuego volcano indicate increased eruptive activity during the past day (station FG3).

Besides an earthquake swarm three days ago, seismograms from Telica volcano (Nicaragua) show no untoward activity (other than normal tremor) today (TELN).

Mount Pagan, Mariana Islands is active since many weeks. NASA, Aqua Modis has made a nice satellite image from the eruption cloud.


  1. April Gass says