Bárdarbunga Vulkan: Nachrichten
Bardarbunga volcano update: Lava fall in Holuhraun’s growing lava field
Samstag Nov 29, 2014 11:46 | IS
Two night time images of lava falls cascading down from the edge of the new lava field. Photo:University of Iceland.
These two images were posted on the twitter account of the University of Iceland after their recent field expedition. As the lava field continues to expand, new branches of red hot rivers reach its edge and cascade down on the sandy plain below in a spectacular ‘water’fall of glowing lava. Scientists report that by now the Holuhraun lava field covers almost 75 square kilometres which represents an area bigger than the Reykjavik metropolitan area.
Crater and eruption column seen from hills southwest of the eruption site on 26 November 2014. Photo: Morten S. Riishuus.
The intensity of the eruption declined so that the present amount of emitted lava is only a quarter of what it was at the eruption’s most intense phase. But according to Ármann Höskuldsson, volcanologist at the University of Iceland Earth Science Institute, there are no indications that the volcanic activity will stop anytime soon. He points out that it remains a very intense eruption despite the recent (temporarily?) weakening of its activity. Scientists observed fluctuations in the eruption plume last week due to sporadic emission of powerful lava jets. The lava flow discharge pulsated accordingly.
The exact amount of magma flowing from the Bárðarbunga magma chamber through the intrusive dike below the Vatnajökull glacier and eventually erupting in Holuhraun is presently unclear. The Icelandic Broadcasting Service (RUV) reports it to be 130 cubic metres asecond, whereas the newspaper Morgunblaðið (mbli.is) estipmates it to be between 60 and 100 cubic metres per second.
The area continues to be very seismically active with every day a few earthquakes larger than M = 3 at the Bárðarbunga caldera and weaker trembling around the dike intrusion (Icelandic Met Office).
Dienstag, Nov 25, 2014
The eruption at Holuhraun continues strongly. The only apparent change is that during the past days, the intensity of lava output seems to be less stable and fluctuating. ... [mehr]
Montag, Nov 17, 2014
Winter conditions continue to make it difficult to study the fissure eruption at Holuhraun. Rare opportunities for visual observation however revealed that the Baugur crater ceased to eject tall lava fountains and transformed into an elongated, boiling lava lake. Magma seems to be welling up in this lava lake at the same effusion rate as early November. The two images accompanying this update are snapshots from a stunning video recently shot by Jon Gustafson. ... [mehr]
Bardarbunga volcano update: Continuing eruption formed a 70 km² lava flow and caused 44 m of caldera subsidence since its onset on August 31
Sonntag, Nov 09, 2014
The volcanic eruption at Holuhraun gives no signs of weakening and continues to eject an impressive lava fountain from the central Baugur crater at a rate similar to the past few weeks. This record-breaking eruption started on the 31st of August 2014 and formed a more than 17 km long lava flow. Using the successive outlines of this lava flow as drawn on a radar image from the Icelandic Coast Guard, researchers from the Institute of Earth Sciences estimated that by now the lava has covered an area of 70 km². ... [mehr]
Donnerstag, Nov 06, 2014
The Holuhraun fissure eruption continues with amazing stability. By now, more than 1 cubic kilometers of magma has been erupted and covers almost 70 square km (which implies an average thickness of 15 meters). ... [mehr]
Donnerstag, Okt 30, 2014
Huge lava effusion rates continue to characterize the ongoing eruption at the Holuhraun fissure. There are no signs of the eruption ending soon. ... [mehr]