- Opin vísindi
- →
- Fletta eftir höfundi
JavaScript is disabled for your browser. Some features of this site may not work without it.
Fletta eftir höfundi "Einarsson, Páll"
Atriði 1-10 af 10
-
(American Association for the Advancement of Science (AAAS), 2024-03-15)Many examples of exposed giant dike swarms can be found where lateral magma flow exceeded hundreds of kilometers. We show that massive magma flow into dikes can be established with only modest overpressure in a magma body, if a large enough pathway ... -
(American Association for the Advancement of Science (AAAS), 2016-07-14)Large volcanic eruptions on Earth commonly occur with a collapse of the roof of a crustal magma reservoir, forming a caldera. Only a few such collapses occur per century, and the lack of detailed observations has obscured insight into the mechanical ...
-
(Iceland Glaciological Society and Geoscience Society of IcelandJöklarannsóknafélags Íslands og Jarðfræðafélags Íslands, 2018)Hekla volcano is known to have erupted at least 23 times in historical time (last 1100 years); often producing mixed eruptions of tephra and lava. The lava flow volumes from the 20th century have amounted 80% to almost 100% of the entire erupted ...
-
(Oxford University Press (OUP), 1996-07)Two shear-wave profiles, E and G, collected during the 1977 Reykjanes Ridge Iceland Seismic Experiment have played an important role in models of the Icelandic crust. They were originally interpreted as indicating very low shear-wave velocities and ...
-
(Soc. Sci. Islandica, 1976)The seismicity of the Tjörnes Fracture Zone is distributed over a zone 150 km long and 80 km wide. Teleseismic locations of earthquakes within this zone show a diffuse pattern of epicenters that does not easily lend itself to tectonic interpretation. ...
-
Rifting Kinematics Produced by Magmatic and Tectonic Stresses in the North Volcanic Zone of Iceland (Frontiers Media SA, 2020-06-02)In the North Volcanic Zone of Iceland, we studied with the greatest possible detail the complete structural architecture and kinematics of the whole Theistareykir Fissure Swarm (ThFS), an N-S-trending, 70 km long active rift. We made about 7500 ...
-
(Frontiers Media SA, 2018-05-08)Networks of seismographs of high sensitivity have been in use in the vicinity of active volcanoes in Iceland since 1973. During this time, 21 confirmed eruptions have occurred and several intrusions where magma did not reach the surface. All these ...
-
(American Geophysical Union (AGU), 1991-03-10)The May 25, 1987, Vatnafjöll earthquake occurred on the Mid‐Atlantic plate boundary, at a junction between a transform (the South Iceland Seismic Zone) and a spreading segment (the Eastern Volcanic Zone). The South Iceland Seismic Zone has had the most ...
-
(Elsevier, 2021-09)The Hofsjökull volcanic system is located at the northern border of the Hreppar microplate on the Mid-Atlantic plate boundary in Iceland, between the more active Western and Eastern volcanic zones. In this study, fractures, and faults within the fissure ...
-
(Springer Science and Business Media LLC, 2020-05-15)Large volume effusive eruptions with relatively minor observed precursory signals are at odds with widely used models to interpret volcano deformation. Here we propose a new modelling framework that resolves this discrepancy by accounting for magma ...
Atriði 1-10 af 10