Gradual caldera collapse at Bárdarbunga volcano, Iceland
2016年7月15日 · The Bárdarbunga caldera volcano in central Iceland collapsed from August 2014 to February 2015 during the largest eruption in Europe since 1784. An ice-filled subsidence bowl, 110 square kilometers (km 2 ) in area and up to 65 meters (m) deep developed, while magma drained laterally for 48 km along a subterranean path and erupted as a major ...
Askja - Wikipedia
Askja ([ˈasca] ⓘ) is an active volcano situated in a remote part of the central highlands of Iceland. The name Askja refers to a complex of nested calderas within the surrounding Dyngjufjöll [ˈtiɲcʏˌfjœtl̥] mountains, which rise to 1,514 m (4,967 ft), askja meaning box or …
The 2014–2015 complex collapse of the Bárðarbunga caldera, Iceland …
2021年8月1日 · Bárðarbunga is a subglacial volcano located in the northwest part of the Vatnajökull glacier in Iceland. It is composed of a caldera (7 km × 11 km) and a set of distributed fissure swarm, generated by the rifting between the North American and Eurasian plates and the Iceland Hotspot (Thordarson and Larsen, 2007).
2016年7月15日 · Since the formation of Katmai caldera in 1912, during the 20th century’s largest eruption, only five caldera collapses are known to have occurred before that at Bárdarbunga. We used aircraft-based altimetry, satellite photo-grammetry, radar interferometry, ground-based.
Morphological changes of the south-eastern wall of Askja caldera ...
2024年8月17日 · Here, we use a photogrammetric dataset of nearly 80 years to study the landslide-prone south-eastern wall of Askja caldera (Iceland). We analyzed aerial data from 1945 and 1987, stereo...
Formation of Öskjuvatn caldera at Askja, North Iceland: …
2012年5月15日 · The Öskjuvatn caldera at Askja volcano, North Iceland, was formed as a result of an explosive eruption at Askja on 28th–29th March 1875. Öskjuvatn is one of the youngest collapse calderas on Earth, and its initiation and growth were observed and documented by explorers and geologists working in the Askja region between 1875 and 1932.
Evidence of a Shallow Magma Reservoir Beneath Askja Caldera, Iceland …
2024年4月26日 · This paper takes advantage of a large new data set of local earthquakes beneath Askja caldera in Iceland to produce a more detailed picture of the shallow plumbing system than has previously been possible using seismic imaging.
New light on caldera evolution—Askja, Iceland
1991年4月1日 · The large multiple-caldera volcanic system of Askja, central Iceland, is composed principally of subglacial basaltic hyaloclastite-pillow-lava formations and postglacial basaltic scoria and flows. Traditionally, such calderas are believed to be …
Geodetic data shed light on ongoing caldera subsidence at Askja, Iceland
2013年4月18日 · Subsidence within the main caldera of Askja volcano in the North of Iceland has been in progress since 1983. Here, we present new ground- and satellite-based deformation data, which we interpret together with new and existing micro-gravity data, to help understand which processes may be responsible for the unrest.
Bimodal volcanism at the Katla subglacial caldera, Iceland: insight ...
2006年7月28日 · The Katla subglacial caldera is one of the most active and hazardous volcanic centres in Iceland as revealed by its historical volcanic activity and recent seismic unrest and magma accumulation. A petrologic and geochemical study was carried out on a suite of mid-Pleistocene to Recent lavas and pyroclastic rocks originated from the caldera.