- Opin vísindi
- →
- Browsing by Department
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing by Department "Faculty of Earth Sciences (UI)"
Now showing items 1-20 of 72
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2020-04-29)The purpose of this thesis is to employ remote sensing to study lava flow products during the 2014-2015 eruption at Holuhraun, Iceland. Multimodal remote sensing techniques and datasets were applied and developed for three study themes (1) deriving ... -
(MDPI AG, 2019-02-26)The Holuhraun lava flow was the largest effusive eruption in Iceland for 230 years, with an estimated lava bulk volume of ~1.44 km3 and covering an area of ~84 km2. The six month long eruption at Holuhraun 2014–2015 generated a diverse surface environment. ...
-
(Frontiers Media SA, 2018-11-13)Mt. Öræfajökull is one of the most dangerous volcanoes in Iceland with potential for a VEI6 eruption and the generation of many severe associated hazards. It is not a frequently erupting volcano with two eruptions in the last 1100 years, in 1362 and ...
-
(Copernicus GmbH, 2017-09-12)The separation of volcanic ash and sulfur dioxide (SO2) gas is sometimes observed during volcanic eruptions. The exact conditions under which separation occurs are not fully understood but the phenomenon is of importance because of the effects volcanic ...
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2020-01)The Breiðdalur volcanic system, eastern Iceland, comprises of a ~600 km3 central volcano, a 30 - 40 km long dyke swarm and plateau basalts erupted from this dyke swarm. The entire volcanic system was active from 10.1 to 7.8 Ma, the central volcano was ...
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2017-02-08)Anthropogenic CO2 emissions, which are resulting in ocean acidification and a decrease in the saturation state for calcium carbonate (Ω), are a particular threat to calcifying marine biota. The aim of this thesis is to fill important knowledge gaps ...
-
(Elsevier BV, 2017-02)We investigated 4.84-m-long sediment record spanning over the Late Glacial and Holocene from Lake Donggi Cona to be able to reconstruct circulation pattern on the Tibetan Plateau (TP). Presently, Lake Donggi Cona is located at the boundaries of Westerlies ...
-
(Elsevier, 2022-01)Ice streams are thought to have regulated the past Iceland Ice Sheet (IIS) during and following the Last Glacial Maximum (LGM) by discharging ice and sediment from the interior of the ice sheet towards the shelf edge. Previous assessments of ice streams ...
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2018-01)Deformation of geothermal reservoirs is a growing topic in the field of crustal deformation research. The deformation behavior of a geothermal resource can give us insight about its sustainability and can help to increase our understanding of reservoir ...
-
(Norwegian University of Science and Technology; University of Iceland, 2015-09)This thesis describes the glacial history, glacier dynamics, sediments and landforms of the Drangajökull ice cap as well as the glacial history and dynamics of the eastern Vestfirðir peninsula in northwest Iceland from the Late Weichselian until present. ...
-
(Paris Sciences et Lettres, Laboratoire de Géologie de l'Ecole Normale Supérieure and University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019-04)The electrical signature of volcanoes is affected by several characteristics of rocks: volume and salinity of pore fluid, abundance of conductive minerals, rock temperature and presence of molten crust (magma). Electromagnetic soundings are widely used ...
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2017-07-14)The 10th century Eldgjá flood lava eruption, southern Iceland, was the most voluminous eruption on Earth in the last 1100 years, erupting up to 21.0 km3 of transitional alkali basaltic magma of rather uniform composition. While 19.7 km3 was erupted as ...
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2018-05)Fluid-rock interaction is an important process in nature, and in many industrial fields. Fluid-rock interaction can be utilized to sequester industrial gases like CO2 and H2S in porous rocks of geothermal systems. The gases are re-injected, together ...
-
(Springer Science and Business Media LLC, 2019-11-25)To gain insights into crystal–melt separation processes during basalt differentiation, we have studied an 8-m-thick pāhoehoe lava lobe from the Hafnarhraun lava flow field in SW Iceland. The lobe has abundant melt segregations, porous cylindrical and ...
-
(Faculty of Science, University of Helsinki; Faculty of Earth Sciences, University of Iceland, 2020-03-20)This thesis provides insights into the petrogenesis of Iceland basalts via three subprojects. The first uses olivine macrocrysts as a proxy for mantle melting conditions below Iceland, the second utilizes petrological thermobarometry to resolve the ...
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2020-03)Supercritical fluids have been reported from both rift and subduction-related geothermal systems. They typically form in the vicinity of magmatic intrusions at the roots of geothermal systems upon conductive heating and boiling of the subcritical ...
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2023-01-06)The volcanic island of Surtsey, off the south coast of Iceland, was formed by shallow ocean-emergent basaltic volcanism in 1963-1967. There were several episodes of activity, migrating between five vents (Surtur, Surtla, Surtungur, Syrtlingur and Jólnir) ...
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2019-06-28)Iceland is located on the Mid-Atlantic Ridge and is the surface exposure of the ridge system on land. The influence of the plume has been shown to reach towards the south at least as far as the Bight Transform Fault. The ridge system in Iceland has ...
-
(University of Iceland, School of Engineering and Natural Sciences, Faculty of Earth Sciences, 2024-04)This thesis describes the evidence of palaeo-ice streams in northeast Iceland. Ice streams within the Iceland Ice Sheet (IIS) had been previously proposed, but limited studies existed on their geomorphology. The aim of this study was to advance the ...
-
(Elsevier BV, 2020-09)Phosphorus (P) availability is essential for global food security. A system dynamics model running from 1961 to 2050 was built for this study, linking global P supply to social, economic and environmental dynamics at regional level. Simulation results ...
Now showing items 1-20 of 72