Bardarbunga (Iceland): Two aerial pictures released by the Icelandic Civil Protection showing the eruptive fissure, the spatter ramparts that formed there as well as the new lava flows.
The eruption which lasted only a few hours probably set a record in the ration between public attention (extremely large) versus size (very small).
Most sources seem to agree that it is unlikely to be over at this point although it is entirely possible that the intrusion simply stops.
First pictures of the new eruptive fissure, taken from a helicopter of the Icelandic Coast Guard were released. They show a row of spatter cones and small lava flows that were erupted from the fissure, about 900 m long and located 5 km from the northern edge of the Dyngjuköll glacier.
Current webcam images and other sources do not indicate ongoing activity except steaming.
Seismic activity has decreased as a result of the pressure release, however a significant amount of earthquakes is still detected in the magma dike, between the eruption site and south to about 5 km into Dyngjujökull. (IMO)
An exclusion zone 1.5 km above and 15 km around the eruption site is in place.
The circumstances around the eruption are somewhat enigmatic. It is interesting to note that the large intrusion, estimated to contain approx. 350 million cu meters of magma on a length of 40 km only produced a tiny fissure eruption (so far, at least).
There are several interesting facts to observe:
– The occurrence of this night’s eruption makes it plausible that during the past days there have in facet been one or several similar small eruptions under the ice that went unnoticed except for the observed ice cauldrons.
An eruption started in Holuhraun north of Dyngjujökull at around 00:02. Seismic tremor was observed on all seismic stations and the web camera installed in the area by Mila has showed some nice pictures of the eruption. It is a small fissure eruption and at 02:40 AM the activity appears to have decreased. (IMO)
Note: When more information becomes available, it will be posted on our Special Update Page.
Rabaul (Tavurvur) (New Britain, Papua New Guinea): A large explosive eruption began at Tavurvur volcano (Rabaul caldera) this morning.
The eruption seems to be similar to a paroxysm on Etna.
Lava fountains and significant ash emissions were observed. The ash plume reached a height of approx. 60,000 ft (18 km) altitude. Aviation color code was raised to red.
— Geól. Sergio Almazán (@chematierra) August 29, 2014
Poas (Costa Rica): A series of 3 phreatic explosions occurred at the crater lake after 14:45 local time on Wednesday. The eruptions followed a phase of relative calm during the past months and ejected jets of steam and mud to heights of approx. 100-200 m.