Blar i Department of Earth Science på tittel
Viser treff 297-316 av 1035
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Forovermodellering og inversjon av 3D og 4D CSEM-data basert på integralligningsmetoder
(Master thesis, 2010-06-01)Elektromagnetiske undersøkelser blir benyttet i letesammenheng for å skille mellom vann- og hydrokarbonfylte prospekt, og dermed øke sannsynligheten for å finne hydrokarboner. I forovermodellering, benyttes ulike ... -
Four billion years of ophiolites reveal secular trends in oceanic crust formation
(Peer reviewed; Journal article, 2014-07)We combine a geological, geochemical and tectonic dataset from 118 ophiolite complexes of the major global Phanerozoic orogenic belts with similar datasets of ophiolites from 111 Precambrian greenstone belts to construct ... -
Fracture formation due to differential compaction under glacial load: a poro-elastoplastic simulation of the Hugin Fracture
(Journal article; Peer reviewed, 2021)The Hugin Fracture, discovered in 2011, is an approximately 3.5 km long seafloor fracture in the North Sea. This fracture was unexpected and, due to the geology in the North Sea no obvious explanation could be found. In ... -
Fracture-generated permeability and groundwater yield in Norway
(Peer reviewed; Journal article, 2002)The transport of groundwater in bedrock is largely determined by interconnected fractures and their apertures. The conditions by which fractures become interconnected are thus of primary importance in understanding ... -
Frictional properties and microstructural evolution of dry and wet calcite-dolomite gouges
(Journal article; Peer reviewed, 2021)Calcite and dolomite are the two most common minerals in carbonate-bearing faults and shear zones. Motivated by observations of exhumed seismogenic faults in the Italian Central Apennines, we used a rotary-shear apparatus ... -
From Caledonian collapse to North Sea Rift: The extended history of a metamorphic core complex
(Journal article; Peer reviewed, 2020)Extensional systems evolve through different stages due to changes in the rheological state of the lithosphere. It is crucial to distinguish ductile structures formed before and during rifting, as both cases have important ... -
From field analogues to realistic seismic modelling: a case study of an oil-producing andesitic sill complex in the Neuquén Basin, Argentina
(Peer reviewed; Journal article, 2018)Interpretation of seismic data has played a major role in recent advances in the studies of igneous sill complexes. Seismic modelling studies based on field analogues represent a promising tool to close the scale gap between ... -
From mountains to basins: geochronological case studies from southwestern Norway, Western Australia and East Antarctica
(Doctoral thesis, 2012-03-02) -
From outcrop to Ground Penetrating Radar images with Point-Spread Function based convolution modelling
(Master thesis, 2021-01-15) -
From slab rollback to orogenic plateau formation: a numerical modelling study of ocean-continent subduction systems
(Master thesis, 2016-05-30)The crustal structures of overriding plates in subduction settings around the world can vary between a large variety of deformation styles, ranging from extensional structures and back arc opening induced by slab roll back, ... -
Full Waveform Inversion and Multi-Diagonal Inversion for Monitoring of CO2 Storage at Sleipner
(Master thesis, 2023-06-01)Carbon capture and storage (CCS) can become necessary for mitigating climate change. However, storing CO2 in subsurface reservoirs requires thorough monitoring. The most accurate and widespread type of monitoring is seismic ... -
Future state of Norwegian glaciers: Estimating glacier mass balance and equilibrium line responses to projected 21st century climate change
(Journal article; Peer reviewed, 2023)Glaciers and ice caps in Norway are presently undergoing mass loss, areal reduction, and frontal retreat, mainly a result of increased summer ablation due to rising summer temperatures over Scandinavia, especially after ... -
Generation of intermediate-depth earthquakes and the fate of subduction fluids : Insights from mantle wedge seismicity and case studies in the Western Hellenic subduction zone
(Doctoral thesis, 2019-06-07)The occurrence of intermediate depth earthquakes at 50-300 km depth in subduction zones is puzzling, because high temperatures and pressures at these depths do not allow standard brittle failure. Instead, two main candidate ... -
Genomes of Thaumarchaeota from deep sea sediments reveal specific adaptations of three independently evolved lineages
(Journal article; Peer reviewed, 2021)Marine sediments represent a vast habitat for complex microbiomes. Among these, ammonia oxidizing archaea (AOA) of the phylum Thaumarchaeota are one of the most common, yet little explored, inhabitants, which seem ... -
Geo-modelling of an exhumed reservoir cap rock succession, Utah, USA
(Master thesis, 2017-06-23)Carbon capture and storage (CCS) can potentially play an important role in mitigating global CO2 emissions. The storage sites must be understood in detail to ensure safe storage on a millennial time scale. Outcrop analogs ... -
Geo-modelling of paleokarst reservoirs - from cave-survey to geocellular paleokarst model
(Master thesis, 2016-11-20)Hydrocarbon reservoirs exhibiting features inherited from former karst processes acting on the reservoir rocks are relatively common worldwide. However, on the Norwegian continental shelf, paleokarst plays have only recently ... -
Geocellular rendering of cave surveys in paleokarst reservoir models
(Journal article; Peer reviewed, 2020)Infilled and collapsed cave systems are an important component of many paleokarst reservoirs. Incorporating these features into industrial reservoir models commonly relies on geostatistical modelling methods that often ... -
Geochemical and microtextural characteristics reflect the formation mechanics of laminated iron deposits at the Perle & Bruse and Troll Wall vent fields
(Master thesis, 2017-08-31)Located at the southern section of the Artic Mid-Ocean Ridge, the Jan Mayen Vent Fields (JMVF) consist of three main hydrothermal sites, the Troll Wall, Perle & Bruse and Soria Moria. These sites contain numerous Fe-deposits, ... -
Geochemical characteristics of the gold-bearing quartz veins in the Lykling area, Bømlo, SW Norway
(Master thesis, 2021-09-11) -
Geochemical characteristics of volcanogenic massive sulfide mineralizations on Bømlo and Stord islands, Sunnhordaland, SW Norway
(Master thesis, 2021-09-11)The results from the present study have brought forward new knowledge about geochemical, mineralogical, stable isotope and trace element data for volcanogenic massive sulfide deposits hosted within Early Ordovician Ophiolitic ...