Browsing Department of Earth Science by Title
Now showing items 598-617 of 1140
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Long-term sustainability of a distributed RI: the EPOS case
(Journal article; Peer reviewed, 2022)The European Plate Observing System (EPOS) is a distributed research infrastructure (RI) with the mission to establish and maintain sustainable and long-term access to solid Earth science data and services by integrating ... -
The Longyearbyen CO2 Lab: Fluid communication in reservoir and caprock
(Peer reviewed; Journal article, 2017-08)The Longyearbyen CO2 Lab of Svalbard, Norway was established to estimate the potential for geological carbon sequestration at Spitsbergen. Several monitoring wells were drilled in and around the planned CO2 injection site. ... -
Long‐Term Coupling and Feedback Between Tectonics and Surface Processes During Non‐Volcanic Rifted Margin Formation
(Journal article; Peer reviewed, 2019)Here we present high‐resolution 2‐D coupled tectonic‐surface processes modeling of extensional basin formation. We focus on understanding feedbacks between erosion and deposition and tectonics during rift and passive margin ... -
Long‑term demise of sub‑Antarctic glaciers modulated by the Southern Hemisphere Westerlies
(Journal article; Peer reviewed, 2021)The accelerated melting of ice on the Antarctic Peninsula and islands in the sub-Antarctic suggests that the cryosphere is edging towards an irreversible tipping point. How unusual is this trend of ice loss within the frame ... -
A low climate threshold for south Greenland Ice Sheet demise during the Late Pleistocene
(Peer reviewed; Journal article, 2020-01-07)The Greenland Ice Sheet (GIS) has been losing mass at an accelerating rate over the recent decades. Models suggest a possible temperature threshold between 0.8 and 3.2 °C, beyond which GIS decline becomes irreversible. The ... -
Low-temperature thermochronological and structural study of the inner Hardangerfjord area, southern Norway
(Master thesis, 2012-10-29)The origin of the mountainous topography in southern Norway is at present unresolved. Post-Devonian sediments are absent onshore, making quantification of crustal uplift and fault displacements difficult. Low-temperature ... -
The Lærdal-Gjende Fault: A detailed structural and thermochronological study
(Master thesis, 2015-06-01)The development of the Caledonian orogen to a passive margin leaded to the present-day Norwegian landscape. The most recent denudation history in Mesozoic and Cenozoic times holds the key to the morphotectonic development ... -
Machine learning and artificial neural networks for seismic processing
(Doctoral thesis, 2023-05-05)Nylig har tilgjengeligheten av kraftige GPUer og "open source"-programvare gjort det mulig for kunstige nevrale nettverk å løse flere praktiske og industrielle problemer. Vi kan bruke nevrale nettverk til viktige seismiske ... -
Magmatism at Passive Margins: Effects of Depth-Dependent Wide Rifting and Lithospheric Counterflow
(Journal article; Peer reviewed, 2022)Rifted passive margins exhibit a large variety in the timing, distribution, and amount of magmatism. The factors controlling magmatism during rifted margin formation, remain, however, incompletely understood, partly owing ... -
The Making of the NEAM Tsunami Hazard Model 2018 (NEAMTHM18)
(Journal article; Peer reviewed, 2021)The NEAM Tsunami Hazard Model 2018 (NEAMTHM18) is a probabilistic hazard model for tsunamis generated by earthquakes. It covers the coastlines of the North-eastern Atlantic, the Mediterranean, and connected seas (NEAM). ... -
Mantle exhumation at magma-poor rifted margins controlled by frictional shear zones
(Journal article; Peer reviewed, 2022)The transition zone from continental crust to the mature mid-ocean ridge spreading center of the Iberia-Newfoundland magma-poor rifted margins is mostly composed of exhumed mantle characterized by highs and domes with ... -
Mapping Microbial Abundance and Prevalence to Changing Oxygen Concentration in Deep-Sea Sediments Using Machine Learning and Differential Abundance
(Journal article; Peer reviewed, 2022)Oxygen constitutes one of the strongest factors explaining microbial taxonomic variability in deep-sea sediments. However, deep-sea microbiome studies often lack the spatial resolution to study the oxygen gradient and ... -
Mapping of fracture corridors in the basement rocks of the Øygarden Complex, Western Norway
(Master thesis, 2019-06-08)Fracture corridors, defined as tabular zones of enhanced fracture intensity, are common features in both sedimentary and crystalline rocks. As potential high permeable structures, research has shown that fracture corridors ... -
Mapping of the Subglacial Topography of Folgefonna Ice Cap in Western Norway—Consequences for Ice Retreat Patterns and Hydrological Changes
(Journal article; Peer reviewed, 2022-06-13)Folgefonna consists of three ice caps which are rapidly retreating in response to warmer temperatures. The melting of Folgefonna has implications for meltwater drainage and hydropower production, as well as the potential ... -
Mapping sediment–landform assemblages to constrain lacustrine sedimentation in a glacier-fed lake catchment in northwest Spitsbergen
(Peer reviewed; Journal article, 2015-10-24)Changes in the deposition of fine-grained rock-flour in glacier-fed lakes reflect glacier variability. This meltwater-driven signal is, however, often overprinted by other processes. To constrain the signature of lacustrine ... -
Mass balance and hydrological modeling of the Hardangerjøkulen ice cap in south-central Norway
(Journal article; Peer reviewed, 2021)A detailed, physically based, one dimensional column snowpack model (Crocus) has been incorporated into the hydrological model, Weather Research and Forecasting (WRF)-Hydro, to allow for direct surface mass balance simulation ... -
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 ... -
Measured and modeled acoustic propagation underneath the rough Arctic sea-ice
(Peer reviewed; Journal article, 2017-09)A characteristic surface duct beneath the sea-ice in the Marginal Ice Zone causes acoustic waves to be trapped and continuously interact with the sea-ice. The reflectivity of the sea-ice depends on the thickness, the elastic ... -
Measuring seismic station timing errors from ambient noise
(Master thesis, 2018)Cross correlations of ambient seismic noise recorded at two stations can be used to estimate the Green’s function between these two stations. Since seismic stations are continuously recoding seismic noise, the Green’s ... -
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 ...