Volcano activity of July 16, 2012 - Etna, Pacaya, Fuego, Pagan, Sakurajima, Batu Taru, Nyiragonga, Popocatepetl, Nevado del Ruiz, Galeras and El Hierro

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. -

July 16, 2012 volcano activity

Update 19:52 UTC : ER Reader Roland informed us a few moments ago of a glowing cloud above Etna's Bocca Nuova (Sicily, Italy) (this vent activity is going on for a couple of days and is visible at night). Click here for the webcam showing the glowing cloud.

Thing's appear to be quieting again at most volcanoes we have reported on the past few days.

At El Hierro (Spain), seismicity has dropped to very low levels with no events over M2.5 in the past 24 hours.

In Guatemala, volcanic tremor is reduced at both Pacaya (station PCG) and Fuego (station FG3) with respect to the past few days

Volcano-tectonic seismicity is on the rise at Popocatepetl (Mexico) and perhaps at Galeras (Colombia) with some tremor thrown-in (station CUVZ).

SO2 output, as measured by satellite, remains high at Popocatepetl, while SO2 emission from recently eruptive Nevado Del Ruiz (Colombia) has become more fitful.

We do not want to withhold you the activity on Mount Pagan (Mariana Islands) on July 11. Gas and ash clouds has been observed  up to a height of 5000 ft (1500 m). The volcano summit is at 570 m. Mariana Islands authorities are reporting ash fall at the island.

Activity observed by satellites

An ash cloud was observed at 10000 ft (3 km) from Sakura-Jima volcano (Japan). The summit of the volcano is at 1060 m.

SO2 satellite images show a further strong emission at Niyragonga volcano (DR Congo)

An ash plume has been detected at 8000 ft (2.4 km) earlier today at Batu Tara volcano (Komba Island, Indonesia)


  1. SEMEESE Roland says

    Op websites, o.m. van LAVE, geeft de webcam duidelijk rode gloed weer van lava-activiteit in de Bocca Nuova. Dit is trouwens reeds enkele dagen aan de gang.