In the inset image, the shadow of the plume can be seen to the right of the vent. Location common near equator restricted longitudes Temp. Plume diameters can be as much s 1,000 km. In December 1996, Pele's plume had at a height of 460 km. Two of the eruption sites, called Pele and Loki, are associated with calderas.
Explosive eruptions can continue for at least a few days but some wane after a few hours.
Sulfur dioxide gas may be the driving force of the explosive eruptions. Effusive High-resolution image of part of Io showing lava flows and other volcanic features on Io. Earth-based monitoring of thermal emissions on Io have been interpreted as eruptions of surface lava flows. In 1996, two effusive eruptions produced about 3 square km of lava at eruption rates of 10,000 to 1,000,000 square meters per second. Eruptions on Io may produce pahoehoe and aa flows, possibly as overflow from lava lakes or from fissure eruptions.