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Now showing items 601-700 of 1071
(Master thesis / Masteroppgave, 2016)
The frequency content of seismic data is changing with propagation depth due to intrinsic absorption. This implies that the higher frequencies are highly attenuated, thus leading to a loss in resolution of the seismic ...
(Master thesis / Masteroppgave, 2016)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
The study focuses on occurrences of Ophiomorpha burrows in a transgressive–regressive succession composing the Early Paleocene Firkanten Formation deposited in paralic, prodelta to delta front conditions in the Central ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2016)
Foraminiferal facies trends are outlined in a new sequence stratigraphic model embracing depositional conditions from alluvial plain to offshore shelf settings. The biofacies proxies include distribution of benthic species, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Climate is one of the major factors controlling agricultural productivity in Africa. Changes in meteorological variables such as rising temperatures, changes in precipitation and increase in atmospheric carbon dioxide ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Basal pressure has been recorded at the Svartisen Subglacial Laboratory, northern Norway, for 20 years, and is measured by load cells installed at the ice–rock interface under ∼200 m of glacier ice. Synchronous pressure ...
(Master thesis / Masteroppgave, 2015)
The present study is done to analyse the growth basin development of Jurassic-Cretaceous age in the Goliat field. There are three fault trends in Goliat area with TFFC having the longest history of activity and exhibits a ...
Capping of Contaminated Sediments in a Formerly Anoxic Basin in Inner Oslofjord, Norway: Temporal Processes and Ecological Effects Restricted Access
(Master thesis / Masteroppgave, 2015)
Capping, the placement of uncontaminated (clean) sediments over contaminated sediments, has been practiced in the last three decades as ecologically friendly and cost efficient remediation technique. The polluted, formerly ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
Lower Jurassic Cook Formation is an important hydrocarbon reservoir in northern North Sea due to its anomalously high porosity at depths around 3000 meters. This study presents information about the depositional environment, ...
(Master thesis / Masteroppgave, 2015)
Outcrops in the central and southern Mandawa Basin have been examined and studied in detail, with the emphasis on describing facies and facies associations. This has been done to provide information about the depositional ...
(Master thesis / Masteroppgave, 2015)
Observational data from 61 moorings was used to decompose vertical velocity fields into its modal components using two different approaches, one assuming a flat bottom ocean and one assuming an ocean with rough topography. ...
(Master thesis / Masteroppgave, 2015)
The Scandinavian Caledonides have been long studied, yet their ever unfolding complexity renders them far from being fully understood. It has been recognized that the Caledonian Allochthons have neither a linear nor ...
(Master thesis / Masteroppgave, 2015)
Mining activity has been the main support for the economy in Folldal, Hedmark, during more than two centuries due to the extraction of copper, zinc and sulfur that rebounded in the industrial and social development of the ...
(Master thesis / Masteroppgave, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
This is the first study to determine the density of questing Ixodes ricinus in northern Norway. It was performed at two sites in Brønnøy, which has been known for its tick permissive habitats for decades and is one of the ...
(Master thesis / Masteroppgave, 2015)
CO2 storage is considered as one of the most promising solutions to overcome global increase in temperature. In order to ensure the safety of the sequestrated CO2, several geophysical monitoring methods are required, among ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
We assess how reliable the Eddy-Covariance (EC) method is in estimating surface fluxes under the difficult conditions that occur in the high Arctic. Emphasis is placed on stable stratification and the breakdown of EC ...
(Master thesis / Masteroppgave, 2015)
The influence of diminishing sea ice and increased aerosol number concentration on low clouds over the Beaufort Sea, north of Canada and Alaska, has been investigated by use of a formulation of the Weather Research and ...
(Master thesis / Masteroppgave, 2015)
The Norwegian Water Resources and Energy Directorate (NVE) has an ambition of introducing energy balance snow melt modelling in their hydrological models, preferably on a finer resolution than daily in order to account for ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
Quartz cementation and precipitation of clays are two of the most porosity and permeability reducing processes in the Brent Group sediments. Dissolved feldspar and authigenic kaolinite occur at shallow depths as a function ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
(Doctoral thesis / Doktoravhandling, 2015)
(Master thesis / Masteroppgave, 2015)
Recently, population and development approach closer to mountainous regions and other landslide prone areas. Since landslides produce loss of life and damaging to property, monitoring and analysing the runout behaviour of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Pore pressure in fine-grained rocks is important with respect to drilling problems such as kicks, blowouts, borehole instability, stuck pipe and lost circulation. In this study, a succession of overpressured, fine-grained, ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Amplified warming at high latitudes over the past few decades has led to changes in the boreal and Arctic climate system such as structural changes in high-latitude ecosystems and soil moisture properties. These changes ...
(Master thesis / Masteroppgave, 2015)
A key focus of this thesis is if migrated bitumen from Lower to Middle Jurassic and Cretaceous age sandstones in the 6609/11-1, 6610/7-1 and the 6609/5-1 wells in the Helgeland Basin might originate from Devonian source ...
(Master thesis / Masteroppgave, 2015)
Two-dimensional seismic data and a regional seismic sequence analysis of the Paleocene succession in the southwestern Barents Sea are presented and discussed. The Paleogene Torsk Formation is bounded by a Cretaceous – ...
(Doctoral thesis / Doktoravhandling, 2015)
This dissertation investigates the physical structure of the crust and upper mantle in southwestern Scandinavia using different seismological and non-seismologic geophysical methods:
1. The S-wave velocity structure of ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Measurements of atmospheric nitrogen oxides NOx (NOx = NO + NO2), peroxyacetyl nitrate (PAN), NOy, and non-methane hydrocarbons (NMHC) were taken at the Greenland Environmental Observatory at Summit (GEOSummit) station, ...
(Master thesis / Masteroppgave, 2015)
Denne masteroppgaven er en fortsettelse av et nylig igangsatt overvåkningsprogram av Marthabreen på Svalbard. På grunn av kullutvinning i Svea, særlig den nye gruva i Lunckefjell godkjent i 2011, er det nødvendig å undersøke ...
(Master thesis / Masteroppgave, 2015)
Sammendrag På verdensbasis forekommer det skredkatastrofer som utgjør en kontinuerlig fare for menneskeliv og infrastruktur lokalisert i nærområdene. Det er oftest land med svak utviklet økonomi og med lavere grad av sosial ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
Palsas are permafrost mounds in mires with a core of ice, widespread situated in the sporadic permafrost zone. A tendency towards decay of palsa mires since the second half of the 20th century has been observed in Fennoscandia. ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
Sedimentary successions of Permo-Triassic to Early Cretaceous age have been studied in core 16/1-13 from the Edvard Grieg Field, located on the Utsira High, in the North Sea. Sedimentary field data combined with petrographical ...
RAMMS::Rockfall versus Rockyfor3D in rockfall trajectory simulations at the Community of Vik, Norway
(Master thesis / Masteroppgave, 2015)
Assessment of advantages and limitations of rockfall models require in-depth-knowledge in the rockfall field, testing of model with field investigated data, as well as understanding rockfall mechanics. This thesis intends ...
(Master thesis / Masteroppgave, 2015)
The study area is located in the Bjørnøya basin, the southwestern Barents Sea. It is surrounded by the Loppa High and Sub-platform to the east and southeast, the Veslemøy high to the west and to the north by the Bjørnøyrenna ...
(Master thesis / Masteroppgave, 2015)
The motion of temperate and polythermal glaciers is influenced by the seasonal input of meltwater to the basal hydrological system. Spatial differences in the bed sliding velocities lead to stress and strain in the glacier ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
Samandrag Tradisjonelle massebalansemålingar med stakar og tettleiksprøver har vore utført i Noreg i over 50 år. Hellstugubreen, som denne oppgåva tek føre seg, har ein av dei lengste massebalanseseriane i Noreg. Massebalansen ...
(Master thesis / Masteroppgave, 2015)
The Caledonian mélange unit of South Norway is a unit that has largely been overlooked in previously studies of the Caledonides. The mélange consists of Alpine type metaperidotite bodies now found as serpentinites, talc ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
The main purpose of this study is to test the hypothesis that, with appropriate structures, increasing model complexity with the same model concepts would lead to an increase in the model efficiency in simulating either ...
(Doctoral thesis / Doktoravhandling, 2015)
Climate change is one of the most serious environmental threats that humanity has ever been confronted to. Hydrological models are vital tools to asses its impacts on the water cycle and water resources. The goal of this ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
This study presents a reconstruction of the seasonal mass balance of Glacier No. 354, located in the Akshiirak range, Kyrgyzstan, from 2003 to 2014. We use a distributed accumulation and temperature-index melt model driven ...
(Master thesis / Masteroppgave, 2015)
The advent of satelitte observations revolutionalized Oceanography, and it has unveiled a turbulent ocean circulation dominated by mesoscale eddies (10-100km). Eddies represent an important aspect of the flow, and understanding ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Glaciers are crucial in many countries where meltwater from glaciers is an important source of water for drinking water supply, irrigation, hydropower generation and the ecological system. Glaciers are also important ...
(Master thesis / Masteroppgave, 2015)
Land use changes increases availability of necessities, but there is also a risk of damaging or depleting natural resources. Groundwater, which is one of the most important natural resources, is dependent on having a balance ...
(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2015)
Satellite imagery is increasingly used to monitor glacier area changes and create glacier inventories. Robust and efficient pixel-based band ratios have proven to be accurate for automatically delineating clean glacier ...
(Master thesis / Masteroppgave, 2015)
Representatives of the avian taxon Zygodactylidae are among the best known small arboreal birds from the early Palaeogene. Still, however, the anatomy of zygodactylids is not fully understood. It is therefore important ...
(Master thesis / Masteroppgave, 2015)
Denne oppgaven tar for seg flom- og jordskredhendelser i Valdres, langs Randsfjorden og fylkesveiene i Etnedalen, på Østlandet. Begrepene jordskred og flomskred skaper uklarheter ved utførelse av fare- og risikoanalyser i ...
(Master thesis / Masteroppgave, 2015)
In this this study, receiver function analysis of the crust underneath TROLL seismic station in Queen Maud Land, Antarctica was performed. An analysis of the neighboring seismic station SNAA was carried out as well to ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
The glacier calving process is poorly documented but closely related to glacier dynamics. Glaciers respond to many factors, such as air temperature or precipitation and can affect calving activity. Accessing calving rate ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
This study is a small part of ongoing research for CO2 sequestration at Longyearbyen CO2 Storage Lab, Svalbard, Norway. The primary aim of this study is to determine geomechanical properties of two important caprock units ...
The granulite-eclogite facies transition as developed in the Bergen Arcs, with focus on the minerals scapolite and spinel Restricted Access
(Master thesis / Masteroppgave, 2015)
The Precambrian granulites (T~850°C and p<1.0 GPa) of the Lindås nappe, Bergen Arcs are transformed to Caledonian eclogites (T~670°C and p~1.8 GPa) in shear zones and along fluid pathways. This ...
(Master thesis / Masteroppgave, 2015)
The timescales of transport from the surface to the tropical tropopause layer (TTL) was studied using the Lagrangian transport model Flexpart. The model was driven by the ERA-Interim reanalysis from the European Center for ...
(Master thesis / Masteroppgave, 2015)
Abstract Late Smithian (Early Triassic) ammonoids from a single carbonate concretion in the uppermost Lusitaniadalen Member ( Fish Niveau , Vikinghøgda Formation) at Stensiöfjellet, Spitsbergen, are studied and compared ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Land-use changes until the beginning of the 20th century made the terrestrial biosphere a net source of atmospheric carbon. Later, burning of fossil fuel surpassed land use changes as the major anthropogenic source of ...
(Doctoral thesis / Doktoravhandling, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Low-energy ions of ionospheric origin constitute a significant contributor to the magnetospheric plasma population. Measuring cold ions is difficult though. Observations have to be done at sufficiently high altitudes and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
This study investigates the dissipation rates and flow conditions at the Drøbak Sill in the Oslofjord. The area was transected 13 times with a free-falling microstructure shear probe during 4 days in June 2011. At the same ...
(Doctoral thesis / Doktoravhandling, 2015)
Carbon capture and storage (CCS) in geological reservoirs – especially saline aquifers – is a key midterm solution to mitigate climate changes caused by increasing anthropogenic CO2. In order to ensure that a CCS project ...
(Master thesis / Masteroppgave, 2015)
(Doctoral thesis / Doktoravhandling, 2015)
Internal waves are generated when water currents interact with bottom topography, as when tidal flow pass across a sill in a fjord. These internal waves carry energy that is made available for turbulent mixing when the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Globalisation and interregional exchange of people, goods, and services has boosted the importance of and reliance on all kinds of transport networks. The linear structure of road networks is especially sensitive to natural ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
At present, anthropogenic halogens and oceanic emissions of very short-lived substances (VSLSs) both contribute to the observed stratospheric ozone depletion. Emissions of the long-lived anthropogenic halogens have been ...
(Journal article / Tidsskriftartikkel / SubmittedVersion, 2015)
(Master thesis / Masteroppgave, 2015)
Radio-Echo Sounding (RES) surveys are an effective way to map the thermal regime of glaciers. RES measurements at two different center frequencies were conducted on Hellstugubreen and Storbreen, two mountain glaciers located ...
(Doctoral thesis / Doktoravhandling, 2015)
Glacier surging is an internally triggered instability. Surge-type glaciers periodically alternate between long periods of slow flow (the quiescent phase) and short periods of fast flow (the surge phase). Surging yields ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
(Doctoral thesis / Doktoravhandling, 2015)
The tomographic scanning (TOSCA) family of imagers collects their raw signals from a line-shaped sensitive area scanned across the image plane. An image is then formed by tomographic reconstruction techniques. A TOSCA ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
At the Julian 1-2, a period major break in reef growth took place in the Tethys realm. This lithological change from carbonates to siliciclastics is interpreted to be the result of increased runoff. Increased continental ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
tWave form modeling is used in a vast number of applications. Therefore, different methods have beendeveloped that exhibit different strengths and weaknesses in accuracy, stability and computational cost.The latter remains ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Eikonal models have been widely used for traveltime computations in the field of seismic imaging, but they are often criticized for having low accuracy and poor resolution of the output image. Including amplitude information ...
(Master thesis / Masteroppgave, 2015)
Deeply buried reservoirs represent interesting plays on the Norwegian Continental Shelf due to the efficiency of chlorite coatings as a porosity-preserving mechanism. This study investigates factors controlling reservoir ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
Mass loss from glaciers and ice sheets currently accounts for two-thirds of the observed global sea-level rise and has accelerated since the 1990s, coincident with strong atmospheric warming in the polar regions. Here we ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
In this study we simulate the climatic mass bal- ance of Svalbard glaciers with a coupled atmosphere–glacier model with 3 km grid spacing, from September 2003 to September 2013. We find a mean specific net ...
Reservoir quality of the Stø and Nordmela Formations in well 7220/8-1, Johan Castberg Area in the SW Barents Sea. Restricted Access
(Master thesis / Masteroppgave, 2015)
This project aims to increase the understanding of reservoir quality of the Stø and Nordmela Formations in the Skrugard well (7220/8-1) in the SW Barents Sea. The selected interval from 1292.3 m to 1404.25 m in the Skrugard ...
(Master thesis / Masteroppgave, 2015)
The main objective of this study is to attempt to correlate twelve (12) core and (1) one outcrop source rock samples, recovered from the Hammerfest Basin, the Nyslepp/Måsøy Fault Complex, the Finnmark Platform, the Nordkapp ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
Different horizons within an exposed deformed sedimentary sequence can, along with the fracture pattern, potentially be utilized by reducing fluids, in turn altering the mineralogical composition of the unit. Potentially ...
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
(Master thesis / Masteroppgave, 2015)
Snow accumulation is the most spatially heterogeneous component of glacier mass balance calculations, yet it exhibits robust time stability in spatial distributions. This thesis examines the characteristics of time stability, ...
(Master thesis / Masteroppgave, 2015)
Parsimonious snow modelling for application in hydrological models Calibration free methods for estimating spatial distribution and melt of snow
Spredning av PFOS forurenset grunnvann Restricted Access
(Master thesis / Masteroppgave, 2015)
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
This study evaluates sensitivities of glacier mass balance and runoff to both annual and monthly perturbations in air temperature and precipitation at four highly glacierized catchments: Engabreen in northern Norway and ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
During 4 field days in the years 2009–2011, 22 data sets of measurements were collected in the inner Oslofjord, Norway. The data consist of recordings of spectral nadir radiances in air and water as well as spectral downward ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2015)
We study segregation of the subducted oceanic crust (OC) at the core-mantle boundary and its ability to accumulate and form large thermochemical piles (such as the seismically observed Large Low Shear Velocity Provinces ...