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. -
August , 2012 volcano activity
Only Rodger Wilson volcanoes of the America’s overview today because of our reporting on the cruel Azebaijan Province, Iran earthquake. More than 180 people have lost their live and at least 1600 have been injured (toll is still climbing)
Colombian, Guatemalan and El Salvadoran volcano-seismogram sites still not updating. The only sign of perhaps new activity is a small SO2 anomaly over San Miguel volcano in El Salvador. San Miguel has frequent periods of seismic unrest accompanied by increased gas output.The last time I checked San Miguel seismograms (a week or two ago) there was nothing out of the ordinary (frequent small volcanic earthquakes).
Stronger tremor has subsided at Popocatepetl (Mexico). Exhalations remain at low levels (less than one per hour) and SO2 output appears reduced from previous weeks.
Nothing to report seismically from Tongariro (New Zealand) overnight. A few very small earthquakes are visible on seismograms there. More interesting activity at White Island from the same period. There are a few explosion signals on White Island seismograms overnight.
A impressive SO2 cloud today in DR Congo to the west of the Niyragongo volcano.
Ambrym volcano at Vanuata also showed a strong SO2 cloud