Department of Earth Science: Nye registreringer
Viser treff 1-20 av 1134
-
Tectono-Stratigraphic Evolution of Salt-Influenced Normal Fault Systems: An Example From The Coffee-Soil Fault, Danish North Sea
(Journal article; Peer reviewed, 2023)We explore how the relationships between fault activity, salt movement and sediment loading affect the stratal geometry of the hanging wall throughout the evolution of a salt-influenced normal fault system. We examine a ... -
An integrated geological characterization of the Mid-Pleistocene to Holocene geology of the Sørlige Nordsjø II offshore wind site, southern North Sea
(Journal article; Peer reviewed, 2024)Subsurface deposits in recently glaciated marine areas are highly heterogeneous, representing a range of glacial and postglacial environments and processes including glacitectonism, overconsolidation, fluvial and lacustrine ... -
Topological Characterization of a Fault Network Along the Northern North Sea Rift Margin
(Journal article; Peer reviewed, 2023)The factors that control the spatial variation of the topological characteristics of normal fault networks at the rift-scale are poorly understood. Here, we use 3D seismic reflection data from the northern North Sea to ... -
Tectono-stratigraphic model for high-displacement crustal normal faults on continental rifts : The Late Jurassic and earliest Cretaceous on and around the Frøya High, Norwegian Sea
(Doctoral thesis, 2024-04-05)Nye seismiske refleksjonsdata og forbedringer i prosessering av seismikk i løpet av de siste to tiårene har forbedret muligheten for å se strukturer i necking- og distaldomenet i riftede marginer. Osmundsen og Peron-Pinvidic ... -
Application of in-situ gamma spectrometry for radiogenic heat production estimation in the Western Himalaya, Kohistan, and Karakoram in northern Pakistan
(Journal article; Peer reviewed, 2023)The Himalaya, Kohistan, and Karakoram ranges comprise Proterozoic to Cenozoic crystalline complexes exposed in northern Pakistan. Numerous hot springs in the area indicate high subsurface temperatures, prompting a need to ... -
Constraining the 3-D Geometry of Fold-Thrust Belts Using Section Balancing vs. 3-D Interpolative Structural and Probabilistic Modeling
(Journal article, 2023)Quantitative uncertainty analysis, 2-D and 3-D modeling of the subsurface, as well as their visualization form the basis for decision making in exploration, nuclear waste storage and seismic hazard assessment. Methods such ... -
Subsurface Faults Permeability study: Utilization of production data in an exploratory phase, Njord field Heltan Terrace Norwegian Continental Shelf (NCS)
(Master thesis, 2024-01-08)Faults in the subsurface can either aid or block fluid movement based on rock permeability. Analytical techniques measure fault seal capacity for hydrocarbon exploration and carbon capture and storage (CCS) planning. Fault ... -
An experimental study of the effect of water and chlorine on plagioclase nucleation and growth in mafic magmas: application to mafic pegmatites
(Journal article; Peer reviewed, 2023)In this study, the effects of H2O and Cl on the grain size and nucleation delay of plagioclase in basaltic magma were investigated using dynamic and equilibrium experiments at 1150 ∘C, 300 MPa, and oxygen fugacity between ... -
Fault sealing and fluid contact control in Gullfaks Sør
(Master thesis, 2023-11-06)In subsurface reservoirs, understanding the fault sealing capacity is important to predict the amount of hydrocarbons present in the reservoirs. Some earlier literature has emphasized using shale gouge ratio (SGR) to predict ... -
Interpretation of 3D Ground Penetrating Radar data in archaeology by applying seismic attributes
(Master thesis, 2023-11-20)Ground Penetrating Radar (GPR) has emerged as a widely employed geophysical method in archaeological studies, with recent advancements leading to large-scale, high-resolution surveys. The processing techniques applied to ... -
On the importance of temperature and precipitation changes for glacial ice sheet stability
(Master thesis, 2023-11-20)Ice sheets undergo periodic advances and retreats, resulting in glacial-interglacial cycles. The Last Glacial Period is widely believed as involving a long-time buildup phase followed by a rapid termination over approximately ... -
Assessing the influence of supraglacial lakes to the mass balance of Tapado Glacier
(Master thesis, 2023-11-27)Glaciers are an important source of water for agriculture, mining and large population residing in downstream basins in the semiarid Andes. The Tapado Complex (2.44 km2) is the main glacier in the catchment Coquimbo-La ... -
Architecture and Sedimentology of Late Weichselian Delta Deposit in Vie, Førde Norway
(Master thesis, 2023-12-04)An early Holocene glacier front deposit of a lower outwash fan and an upper delta, at Vie sandpit next to the town of Førde in Sunnfjord municipality in western Norway has been investigated using various fields methods, ... -
Temperature variation in caves and its significance for subterranean ecosystems
(Journal article; Peer reviewed, 2023)Climate change affects all ecosystems, but subterranean ecosystems are repeatedly neglected from political and public agendas. Cave habitats are home to unknown and endangered species, with low trait variability and intrinsic ... -
Configuration of the Scandinavian Ice Sheet in southwestern Norway during the Younger Dryas
(Journal article; Peer reviewed, 2023)The extent of the Scandinavian Ice Sheet in southwestern Norway is precisely located during the well-characterized Younger Dryas re-advance. However, the thickness of the ice sheet is less well constrained inland from the ... -
Atlantic inflow and low sea-ice cover in the Nordic Seas promoted Fennoscandian Ice Sheet growth during the Last Glacial Maximum
(Journal article; Peer reviewed, 2023)The Atlantic water inflow into the Nordic Seas has proven difficult to reconstruct for the Last Glacial Maximum. At that time, the Fennoscandian Ice Sheet grew potentially to its maximum extent. Sea-ice free conditions in ... -
A matrix-free variant of the distorted Born iterative method for seismic full-waveform inversion
(Journal article; Peer reviewed, 2023)The distorted Born iterative method reduces a nonlinear inverse scattering problem to a sequence of (ill-posed) linear inverse scattering problems that can be solved using a regularized least-squares formulation. This ... -
Coastal permafrost was massively eroded during the Bølling-Allerød warm period
(Journal article; Peer reviewed, 2023)The Bølling-Allerød interstadial (14,700–12,900 years before present), during the last deglaciation, was characterized by rapid warming and sea level rise. Yet, the response of the Arctic terrestrial cryosphere during this ... -
Limited exchange between the deep Pacific and Atlantic oceans during the warm mid-Pliocene and Marine Isotope Stage M2 “glaciation”
(Journal article; Peer reviewed, 2023)The Piacenzian stage (3.6–2.6 Ma) of the Pliocene is the most recent period where Earth experienced sustained intervals of global warmth analogous to predicted near-future climates. Despite considerable efforts to characterize ... -
Mechanical properties of selected granitoids along the Karora hydropower project, Besham, Northern Pakistan: Insights from petrography and joint analysis
(Journal article; Peer reviewed, 2023)The stability of tunnel site depends upon the deformation behaviors of the surrounding rocks, including joint density, mineral composition, micro cracks, and grain boundaries. The aim of this study was to analyze the ...