The world's most active volcanoes - top 10 list
Friday Oct 26, 2012 19:13 PM | DOOR: T
Which are the world's most active volcanoes?
This interesting question is not easy to answer unless a set of criteria is defined. Erik Klemetti on his Eruptions Blog analyzed which volcanoes had the largest number of "large" eruptions during the Holocene (i.e. roughly past 10,000 years) using the most complete dataset available, the Smithsonian's Global Volcanism Project (GVP) database of known eruptions in the Holocene.
"Large" eruptions were defined here as those that rank at least 4 on the widely used VEI (Volcanic Explosivity Index) scale, i.e. eruptions that produced at least 0.1 cubic kilometers of tephra. For comparison, the eruption of Mt. St. Helens eruption in 1980 ejected about 1 km3 and ranks as a low 5 on the VEI scale.
It should be noted that this method favors volcanoes with dominantly explosive eruptions over those with mainly effusive eruptive style (e.g. Kilauea, Etna, Piton de la Fournaise etc), but the result is still interesting. Perhaps it should be called "the most active explosive volcanoes":
1) Shiveluch, Russia (43 entries)
2) Pelée, Martinique (22 entries)
3) Cotopaxi, Ecuador (21 entries)
4) Katla, Iceland (21 entries)
5) Arenal, Costa Rica (19 entries)
6) Hekla, Iceland (15 entries)
7) Ibusuki Volcanic Field, Japan (15 entries)
8) Taupo, New Zealand (15 entries)
9) Vesuvius, Italy (13 entries)
10) Avachinsky, Kamchatka (12 entries)
To read more, visib Heavy Hitters of Holocene Volcanism on Eruptions Blog.
Volcanic activity world-wide 25 October 2012: Popocatépetl, Fuego, Santiaguito, Tungurahua, Tjörnes Fracture Zone (Iceland)
Thursday, Oct 25, 2012
There has not been happening much in the volcano world these days. ... [meer...]
Volcanic activity world-wide 23-24 October 2012: Kilauea, Cleveland, Lokon, Paluweh, Popocatépetl, Fuego, Sotará, Tjörnes Fracture Zone (Iceland)
Wednesday, Oct 24, 2012
Volcanic activity world-wide 22 October 2012: Tjörnes Fracture Zone (Iceland), Popocatépetl, Turrialba, Fuego, Galeras, Raung, Bagana
Monday, Oct 22, 2012
Photo of the Week: Krakatau's crater at full moon in the evening, taken during the VolcanoDiscovery expedition on 3 July 2012
Monday, Oct 22, 2012
Volcanic activity world-wide 19-21 October 2012: Iceland earthquakes, Etna, Popocatépetl, Fuego, Santiaguito, Nevado del Ruiz, Machin, Reventador, Alaid, Raung, Merapi, Nyiragongo, Ambrym, Sakurajima
Sunday, Oct 21, 2012