Volcanos

Roundup of Global Volcanic Activity:

Reventador (Ecuador): The IG reported that in the last few days, increased seismic activity indicative of increased eruptions has been noticed at the volcano. Seismic data also indicated the presence of a lava flow travelling down the SW slope of Reventador's intracaldera cone.

Nyamuragira volcano (DRCongo) activity update: steaming/degassing from pit inside summit caldera. Recent NASA satellite images from 11 June 2013 show a thick steam and gas plume rising from a pit crater in the summit caldera of Nyamuragira volcano. No evidence of lava close to the surface was found, while the lava lake in neighboring Nyiragongo remains well active and visible on the same images. Nyamuragira's plume was rich in water vapor — which condenses rapidly in the humid tropical air — and sulfur dioxide, which lends a blue tint in natural-color satellite imagery. Carbon dioxide, fluorine, and chlorine gas are also found in Nyamuragira lavas and likely present in the gas plume. Located near the eastern boundary of the Democratic Republic of the Congo, Nyamuragira is one of Africa’s most active volcanoes. If degassing magma was near the surface, then the intense heat would cause a bright red glow in shortwave infrared light. No such glow is visible atop Nyamuragira, but it is present on neighboring Nyiragongo Volcano, which has featured a lava lake for more than a decade.