Browsing Faculty of Mathematics and Natural Sciences by Title
Now showing items 8130-8149 of 9919
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The seeding of ice algal blooms in Arctic pack ice: The multiyear ice seed repository hypothesis
(Peer reviewed; Journal article, 2017-07)During the Norwegian young sea ICE expedition (N-ICE2015) from January to June 2015 the pack ice in the Arctic Ocean north of Svalbard was studied during four drifts between 83° and 80°N. This pack ice consisted of a mix ... -
Seeing the wood for the trees: Carbon storage and conservation in temperate forests of the Himalayas
(Journal article; Peer reviewed, 2021)Forests have a prominent role to play in the success of the UN’s Agenda 2030, thus actions to halt deforestation are high on the international sustainability agenda. As humans are altering the composition and extent of ... -
Segmentation of data traces with applications to dipmeter oil well measurements
(Statistical report no. 18, Research report, 1988-02) -
Segmentation of the Caledonian orogenic infrastructure and exhumation of the Western Gneiss Region during transtensional collapse
(Journal article; Peer reviewed, 2021)The (ultra)high-pressure Western Gneiss Region of the Norwegian Caledonides represents an archetypical orogenic infrastructure of a continent–continent collision zone. To test established exhumation models, we synthesize ... -
Seismic acquisition and analysis in a changing Arctic
(Doctoral thesis, 2020-12-03)In the Arctic, temperatures are regularly low enough that water exists in its frozen state, either in the form of ice, snow, or frozen ground. The effective elastic properties of a material depend on the elastic properties ... -
Seismic Acquisition in a Shallow Marine Sea Ice Covered Environment: The Significance of Survey Geometry and Possible Impacts on Pinnipeds
(Master thesis, 2017-06-27)Seismic surveying of Arctic environments is important for both economic and environmental reasons. The world energy demand is increasing, and new areas need to be explored to cover the demand. One of the new areas where ... -
The Seismic Analyzer: Interpreting and Illustrating 2D Seismic Data
(Peer reviewed; Journal article, 2008)We present a toolbox for quickly interpreting and illustrating 2D slices of seismic volumetric reflection data. Searching for oil and gas involves creating a structural overview of seismic reflection data to identify ... -
Seismic Attributes for Carbonates
(Master thesis, 2009-06-02)Seismic attributes can reveal important information about rock properties, and rock physics modeling provide a link between geological and seismic parameters. Carbonate rocks can have wide variations in properties due to ... -
Seismic characterization of reservoirs with multiple fracture sets using velocity and attenuation anisotropy data
(Journal article, 2011)Knowledge about the spatial distribution of the fracture density and the azimuthal fracture orientation can greatly help in optimizing production from fractured reservoirs. Frequency-dependent seismic velocity and attenuation ... -
Seismic data analysis of an onshore-offshore transition zone at Ramså Basin, Norway – a modelling study
(Master thesis, 2022-10-03) -
Seismic depth imaging of complex structures An example from Zagros fold and thrust belt, Iran
(Doctoral thesis, 2006-05-24) -
Seismic Event Classification using Machine Learning
(Master thesis, 2021-06-02)The manual detection of seismic events is a labor intensive task, requiring highly skilled workers continuously analyzing recorded waveforms. Previous work has shown the potential of machine learning methods for aiding in ... -
Seismic expression of shear zones: Insights from 2-D point-spread-function based convolution modelling
(Journal article; Peer reviewed, 2020)Shear zones are common strain localization structures in the middle and lower crust and play a major role during orogeny, transcurrent movements and rifting alike. Our understanding of crustal deformation depends on our ... -
A seismic field test with a Low level Acoustic Combustion Source and Pseudo Noise codes
(Journal article, 2007-01-20)The Low level Acoustic Combustion Source (LACS) is a new type of pulsed underwater acoustic source with an output level of 0.5-1.0 barm peak to peak. The source is based on a combustion engine and intended for shallow ... -
Seismic hazard in Norway due to large earthquakes
(Master thesis, 2015-06-01)There are many faults located in Norway, posing as potential earthquake sources. Even though the seismicity is characterized as low to moderate, earthquakes of magnitude 3.5 or lower occur regularly. The seismic hazard ... -
Seismic hazard of the Izmir region, Turkey, based on a probabilistic seismic hazard assessment and stochastic ground motion simulations
(Master thesis, 2015-06-01)The purpose of this thesis is to conduct a seismic hazard analysis of the region surrounding Izmir. The chosen area is located in a very active seismic region with a high seismicity due to large amount of earthquakes. In ... -
Seismic imaging of faults and fault zones: insight through modelling for improved interpretation
(Master thesis, 2022-06-01)Faults and fault zones in the subsurface can create problems in reservoir production and well placement if gone un-detected because of restriction of fluid flow or affecting the ability of the reservoir to hold fluids. In ... -
Seismic Interpretation and Basin Modeling of the Svalbard Margin and Knipovich Ridge
(Master thesis, 2014-12-11)The Knipovich Ridge is a 550km long system situated on the seafloor west of Svalbard in the Northern Atlantic Ocean. It is a relatively young divergent boundary and ridge in the Northern Mid-Atlantic Ridge system. It is ... -
Seismic interpretation of sill complexes in sedimentary basins: Implications for the sub-sill imaging problem
(Journal article; Peer reviewed, 2018)Application of 3D-seismic reflection-data to igneous systems in sedimentary basins has led to a revolution in the understanding of mafic sill-complexes. However, there is considerable uncertainty on how geometries and ...