Department of Earth Science: Nye registreringer
Viser treff 61-80 av 1034
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North Atlantic surface ocean warming and salinization in response to middle Eocene greenhouse warming
(Journal article; Peer reviewed, 2023)Quantitative reconstructions of hydrological change during ancient greenhouse warming events provide valuable insight into warmer-than-modern hydrological cycles but are limited by paleoclimate proxy uncertainties. We ... -
Atlantic circulation changes across a stadial-interstadial transition
(Journal article; Peer reviewed, 2023)We combine consistently dated benthic carbon isotopic records distributed over the entire Atlantic Ocean with numerical simulations performed by a glacial configuration of the Norwegian Earth System Model with active ocean ... -
The Moho Architecture and Its Role for Isostasy—Insights From the Lofoten-Vesterålen Rifted Margin, Norway
(Journal article; Peer reviewed, 2023)The crustal structure of the Nordland and Troms region, Norway, has received growing scientific attention because (a) the region is one of the most seismically active areas of mainland Norway, and (b) there are differing ... -
West Spitsbergen fold and thrust belt: A digital educational data package for teaching structural geology
(Journal article; Peer reviewed, 2023)The discipline of structural geology is taking an advantage of compiling observations from multiple field sites to comprehend the bigger picture and constrain the region's geological evolution. In this study we demonstrate ... -
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 ... -
Microseismic Waveform Modeling and Inversion using Finite-Difference and Global Optimization
(Master thesis, 2023-06-01)Estimating microseismic source parameters is an essential part of a microseismic monitoring project. Typically the microseismic source position and origin time are estimated utilizing kinematic methods, while the moment ... -
Stratigraphic and Tectonic development of the Nyk High
(Master thesis, 2023-06-01)This thesis aims to develop a holistic model of the stratigraphical and tectonic development of the Nyk High structure in the Northern Vøring Basin, explicitly focusing on the Cretaceous-Paleocene transition. The thesis ... -
Miljøkonsekvenser av tidligere gruvedrift på Litlabø, Stord
(Master thesis, 2023-06-01)Gruvedrift medfører miljøutfordringer, der håndteringen av sulfidholdige overskuddsmasser er spesielt utfordrende siden oksidering og forvitring av disse massene ofte medfører sur avrenning og utlekking av miljøskadelige ... -
Fault Zone Characterization and Monitoring of CO2 Storage using Full Waveform Inversion
(Master thesis, 2023-06-01)CO2 storage in geological formations is essential to limit global warming and reduce the effects of climate change. In order to store CO2 safely and prevent leakage, proper sealing mechanisms are required. Faults are complex ... -
Skredkartlegging i Austrepollen, Kvinnherad Kommune, Vestland
(Master thesis, 2023-06-15)Skredprosessar er eit stort risikomoment mange stader i Noreg. For å redusera risikoen på menneske, bygg og infrastruktur kan det gjerast skredfarevurderingar for å vurdera tryggleiken til eksisterande strukturar eller ... -
Elastic Seismic Imaging and Probabilistic AVO Inversion: Application to CO2 Storage at Sleipner
(Master thesis, 2023-06-01)In order to reduce the effect of global warming, carbon capture and storage (CCS) is considered to be important as it reduces the amount of CO2 in the atmosphere. Geophysical monitoring is essential for safe storage of ... -
The post-Caledonian tectono-thermal evolution of Western Norway
(Doctoral thesis, 2023-06-19)En riftet kontinentalmargin viser ofte et karakteristisk landskap som domineres av høye og flate fjell som er separert fra en lavtliggende kyststripe av en tydelig skrent. Mye av vår nåværende forståelse av disse områdene ... -
Geologic controls on fluid flow and seismic imaging of faults in carbonate rocks : Insights from quantitative outcrop analysis and reflection seismic modeling
(Doctoral thesis, 2023-06-16)Utforsking av undergrunnen har historisk sett hovudsakleg vore drive av økonomiske insentiv gjennom leiting etter hydrokarbon og andre geologiske ressursar. I nyare tid, derimot, har geologiens rolle i det grøne skiftet ... -
Observation of Greenland Ice Velocities and Impact of Surface Melt
(Doctoral thesis, 2023-06-14)Isbreer beveger seg og isdynamikken kontrolleres av mange prosesser. I dette arbeidet fokuserer vi spesielt på basalglidning, eller glidning mot underlaget. Basalglidning er interessant å studere fordi grønlandsisen mister ... -
Deglacial changes in western Atlantic sea surface temperatures and ice sheet variability
(Master thesis, 2023-04-11) -
Simultaneous tracking of multiple whales using two fiber-optic cables in the Arctic
(Journal article; Peer reviewed, 2023-04-28)Climate change is impacting the Arctic faster than anywhere else in the world. As a response, ecosystems are rapidly changing. As a result, we can expect rapid shifts in whale migration and habitat use concurrent with ... -
Detection of ice core particles via deep neural networks
(Journal article; Peer reviewed, 2023)Insoluble particles in ice cores record signatures of past climate parameters like vegetation dynamics, volcanic activity, and aridity. For some of them, the analytical detection relies on intensive bench microscopy ... -
Revised Minoan eruption volume as benchmark for large volcanic eruptions
(Journal article; Peer reviewed, 2023)Despite their global societal importance, the volumes of large-scale volcanic eruptions remain poorly constrained. Here, we integrate seismic reflection and P-wave tomography datasets with computed tomography-derived ... -
Sedimentary deposits and bioturbation in an Early Cretaceous subarctic stormy greenhouse shelf environment
(Journal article; Peer reviewed, 2023)This study of the Aptian lower part of the Carolinefjellet Formation in Svalbard, Norwegian high Arctic, is based on well cores and outcrop section in the Adventdalen area of Spitsbergen and reports on the deposits and ...