The Sælabonn Formation belongs to the Bærum Group, and is recognized in the western part of the Oslo Region, from Mjøsa in the north to Skien in the south. The Sælabonn Formation is the lowermost unit in the Silurian ...

Scandinavian Mountain Range is located at the continental margin of the Eurasian plate. This area is part of the Baltic shield so topography is expected to be generally low. But this is not the case here. In South western ...

Geologically, Barents Sea consists of platform areas and basins, covered by significant amounts of sedimentary rocks ranging from Paleozoic to Cenozoic age. Several phases of uplift have been occurred, highly influenced ...

Paleoklimatologi er viktig for å kunne forutse kommende klimavariasjoner. 1600- og 1700-tallet regnes for å være en del av den lille istid. Den lille istid er en globalt kjøligere periode, og som for det nordiske området ...

On 10th of June 2011 a high amount of precipitation fell on southern Norway, the result of this precipitation in a combination with increased snowmelt cause a flood, the aspects of the flooding will not be discussed here ...

Shooting in an overlapping fashion is called blended or simultaneous acquisition. This can make acquisition efficient and economical. However, deblending (i.e. the process of separating the blended data) of data can be ...

Snøhvit field is located in the SW Barents Sea and comprises a reservoir in Lower to Middle Jurassic sandstones of Stø Formation containing gas with thin oil lag. The sandstones of Upper Triassic to Lower Jurassic Nordmela ...

Groundwater wells are often clogged by incrustation, which has a negative impact on well specific capacity. Chemical and biological incrustation formed by precipitation of minerals in the well reduces the open area of slots ...

The main goal of this thesis is to make a detailed lithostratigraphic map of Gressholmen, Rambergøya, Heggholmen and Bleikøya, using an improved topographical database. Upper Ordovician to Lower Silurian sediments are ...

The Albatross discovery is located approximately 140 km northwest of Hammerfest (city of midnight sun), Norway in the central part of Hammerfest Basin, SW Barents Sea. The Albatross discovery included within Snøhvit field ...

In the Bahi-Manyoni basin in Central Tanzania the geology and climate of the area are the main factors influencing the water chemistry and quality. Most water samples are saturated with respect to quarts, dolomite, calcite, ...

Anthropogenicgreenhouse gases have become widely accepted as the primary cause of global warming. With increasing emissions rates, warming is set to continue and baring any drastic change in mitigation policies, the rate ...

Structural analysis of the Knølegga Fault Complex has been done using 2D seismic reflection data set in order to understand the fault geometries, fault associated features, fault segmentation and temporal evolution of the ...

The Leirdjupet Fault Complex is located in the southwestern Barents Sea and trends N-S from the Loppa High towards the Stappen High between 73°-73°55'N at 21°E. The fault complex divides the Bjørnøya Basin into a deep ...

A grid of 2D regional seismic lines from six different surveys together with Bouguer gravity anomaly data and borehole data sets have been used to get an insight of the structural development of the Ringkøbing-Fyn High and ...

The NE-SW and N-S trending, Bjørnøyrenna Fault Complex is obviously belongs to an extensional regime. It is comprised of three main master faults (MF1, MF2 & MF3) in the study area. This large array of master faults further ...

The deeply buried Upper Jurassic sandstone reservoirs of the South Viking Graben are differentiated by highly variant reservoir quality. A combined petrophysical and petrographical approach is incorporated to analyze these ...

Abstract The present study involves 1D basin modelling of two (2) wells from the Haltenbanken Area (the Midgard well 6407/4-1 and the Smørbukk well 6506/12-9S), by employing BAS software. The core objective is to estimate ...

Marine seismic acquisition represents one of the most used geophysical exploration techniques employed in the petroleum industry today. However, one major challenge is that the meaningful part of the data will be distorted ...

Seismic data contains reflections along with diffractions. Diffractions in seismic data are related to different features like faults, fractures, pinchouts and rough edges of salt bodies. It follows that suppression of ...

Detailed structural analysis of the Troms-Finnmark Fault Complex is implemented in order to understand the associated structural configuration and the stress apparatus responsible for the present day architecture of the ...

The study deals with the diagenesis and reservoir quality prediction of deeply buried Rotliegend sandstone from Northern Permian Basin (NPB) in the Central Graben. Cored intervals from two wells (1/3-5 and 2/10-2) have ...

In this study the taphonomy of a collection of 25 marine reptiles from the Slottsmøya member, (Agardhfjellet Formation) Svalbard was investigated. The marine reptiles which include ichthyosaurs, plesiosaurs and pliosaurs ...

Det er kjent at ozon har skadelig effekt på både mennesker og vegetasjon, i tillegg til å ha en negativ effekt på klimaet gjennom et direkte strålingspådriv. I tillegg har nyere studier vist at ozon også har en inndirekte ...

I denne oppgaven er potensialet til L-band differensiell interferometrisk SAR (DInSAR) evaluert med hensyn til å detektere ustabile helninger i områder med vanskelige topografiske og klimatiske forhold. I hvilke områder ...

The main goal of this thesis is to make a tectonostratigraphic map of the North to North-east part of Hardangerjøkulen (Klippe), close to Finse. The area is defined by three main units: the Basement, Phyllite and the ...

Debris flows pose serious hazards in the mountainous area of central southern Norway. On 10th June 2011, a great number of debris flows occurred in Gudbrandsdalen valley. The intense precipitation triggered most of the ...

This thesis adresses the problem of how to image the time-varying sea surface based on dual sensor marine seismic data. Although flat and stationary sea surface assumptions may suffice during the processing of marine seismic ...

Late Cenozoic outbuilding of the mid-Norwegian continental shelf (62º N-69º 30’N) demonstrates strong relationship between uplift, erosion, subsidence, variations in relative sea level, basin infill, glacial dynamics and ...

Benthic foraminifera have been extracted from both hydrocarbon seep carbonate structures and adjacent shales of the upper Slottsmøya Member (Agardhfjellet Formation) in central Spitsbergen. The assemblages contain both ...

Oseanografiske data ble samlet inn ved hjelp av 20 klappmyss i de Nordiske havene i 2007 og 2008, som en del av IPY-prosjektet MEOP. 6112 vertikale profiler av temperatur og konduktivitet ble samlet inn. Selene dykker dypt, ...

The Southern part of Ringvassøy- Loppa Fault Complex is an extensional fault complex separating the Hammerfest Basin and the Tromsø Basin. Basement movements are believed to have caused the fault complex to work as a long- ...

Water scarcity is a striking issue all over the world because of increased water utilization resulting from growing population. Prevention and sustainable usage of ground water is the keen concern of every government these ...

Glacio-meteorological investigations were conducted on Storbreen glacier, as an attempt to assess the relationship between meteorological conditions at the glacier surface and its mass balance. Primary focus was set on the ...

Continental flood basalts (CFB) are considered as potential CO2 storage sites because of their high reactivity and abundant divalent metal ions that can potentially trap carbon for geological timescales. Moreover, laterally ...

Observations of velocity, pressure, temperature and salinity in the inner Oslofjord have been analysed to provide new information about the relationships between internal tides generated by tidal currents across the Drøbak ...

The hot summer of 2007 in southeast Europe has been studied using two regional atmospheric chemistry models; WRF-Chem and EMEP MSC-W. The region was struck by three heat waves and a number of forest fire episodes, greatly ...

The first aircraft-based observations of an Icelandic dust storm are presented. The measurements were carried out over the ocean near Iceland's south coast in February 2007. This dust event occurred in conjunction with an ...

Sudan har vært utsatt for flere år med degredasjon av vegetasjonen og er rammet av klimaendringer som har ført til fatale konsekvenser for Sudans skjøre økonomi og livene til landets 41 millioner mennesker. Vegetasjons- ...

Tropospheric ozone is currently the third most important anthropogenic greenhouse gas in terms of radiative forcing. In contrast to the long-lived greenhouse gases, e.g. CO2 and CH4, ozone has the ability to cause regional ...

Kalde områder er svært omskiftelige og spiller en viktig rolle i den globale klimadebatten. De reagerer sensitivt selv på små klimatiske variasjoner, ettersom temperaturene fluktuerer rundt frysepunktet. Det er derfor behov ...

The combined effect of glacial and periglacial processes on landscape evolution has recently been termed the ‘cryoconditioning’ of landscapes, and largely affect the Fennoscandian landmass. Further, the distribution of ...

Debris flows, triggered by extreme precipitation events and rapid snow melt, cause considerable damage to the Norwegian infrastructure every year. To define intensity-duration (ID) thresholds for debris flow initiation ...

We use ambient seismic noise and earthquake recordings on a temporary regional network in southern Norway to produce Rayleigh and Love wave phase velocity maps from 3 to 67 s period. Local dispersion curves are then jointly ...

Understanding the controlling factors and elucidating the requirements and conditions necessary for carbon dioxide (CO2) storage by mineral trapping (or carbonation) is of paramount interest for any technical application ...

In characterizing subsurface reservoirs for CO2 storage, the geological heterogeneity distribution is of importance with respect to the injectivity and migration paths. The object of this study is a saline aquifer of ...

Paltridge (1975,1978) proposed that the atmosphere seeks to maximize entropy production, as a non-equilibrium thermodynamic system. He constructed a simple box model of the atmosphere which yields surprisingly realistic ...

A significant number of new palaeomagnetic poles have become available since the last time a compilation was made (assembled in 2005, published in 2008) to indicate to us that a new and significantly expanded set of tables ...

We defined a new global moving hot spot reference frame (GMHRF), using a comprehensive set of radiometric dates from arguably the best‐studied hot spot tracks, refined plate circuit reconstructions, a new plate polygon ...

The equipotential figures of Earth (residual geoid), and of Mars (areoid) are characterized by pairs of elevated and pairs of depressed antipodal equatorial regions. Elevated regions of the residual geoid lie vertically ...

The Earth's internal magnetic field varies on timescales of months to billions of years. The field is generated by convection in the liquid outer core, which in turn is influenced by the heat flowing from the core into the ...

It is generally believed that subduction of lithospheric slabs is a major contribution to thermal heterogeneity in Earth's entire mantle and provides a main driving force for mantle flow. Mantle structure can, on the one ...

We present geodynamic models featuring mantle plumes that are almost exclusively created at the margins of large thermo‐chemical piles in the lowermost mantle. The models are based on subduction locations and fluxes inferred ...

We analyze the role of slab pull acting on the Pacific plate during its early Tertiary change in motion. Slab pull forces are estimated by integrating the negative buoyancy of a 700 km long slab along a revised subduction ...

The service seNorge (http://senorge.no) provides gridded temperature and precipitation for mainland Norway. The products are provided as interpolated station measurements on a 1×1 km grid. Precipitation gauges are predominantly ...

Due to the increasing popularity of analyzing empirical Green’s functions obtained from ambient seismic noise, more and more regional tomographical studies based on short-period surface waves are published. Results could ...

The Congo Basin is characterised by a near-circular shape, a pronounced negative free-air gravity anomaly, and a subsidence history that is slow and long-lived. The basin is often considered as an intracratonic basin, ...

We detect and cluster waveforms of seismic signals recorded close to the calving front of Kronebreen, Svalbard, to identify glacier-related seismic events and to investigate their relation to calving processes. Single-channel ...

Steinskred er årsaken til noen av de største naturkatastrofene i Norge. Økt kunnskap om tema kan skape bedre modeller til å forutse steinskred, som igjen kan redusere tap av menneskeliv og økonomiske tap. Overflateruhet ...

Den turbulente dynamikken i det øvre havet er et mye omtalt tema av forskere. Tidligere studier har vist seg og støtte to hovedteorier; overflate kvasigeotrofisk teori og to dimensional teori. I denne oppgaven har vi brukt ...

Conventional marine data is acquired by towed streamers and air-gun sources deployed at small distances below the sea level. A towed hydrophone records both upward travelling waves as well as downward travelling waves ...

The consequence of dam failure is one of the major hazard to human life as well as to infrastructure. Huge flood waves produced by a failure of dam may have enough capability to destruct some stronger structures like power ...

Det finnes mye skredutsatt infrastruktur i Norge, og det er et behov for kartlegging av skredbaner ved lokaliteter hvor man kjenner til at det regelmessig går skred. Dette både for bedre å kunne vurdere snøskredfaren i ...

This study deals with the recunstruction of depositional environments and development of transgressive-regressive sequences within the upper Grumantbyen Formation and lower Frysjaodden Formation in the Central Basin. Data ...

A well preserved, low diversity assemblage of fossil echinoderms is described from the Volgian Slottsmøya Member (Agardhfjellet Formation) on central Spitsbergen. Five species are recognized: the isocrinid Chariocrinus sp. ...

In this study plesiosaur limb bones of four specimens from the Late Jurassic of Svalbard have been studied to map gross internal structure and microstructure and compare this to extant marine reptiles and mammals. Two ...

Fossile iskilepolygoner er kartlagt, beskrevet og datert i Finnmark fylke. Tidligere kartlegginger og observasjoner er samlet, digitalisert og oppdatert. I areal er det nå omtrent et dobbelt så stort område som er registrert ...

A newly excavated locality yielding plesiosaurs in the Late Jurassic Slottsmøya Member of the Agardhfjellet Formation, Spitsbergen shed new light on earlier theories of functional morphology. The propodials of the Slottsmøya ...

During the campaign in August 2010, five controlled meteorological (CMET) balloons where launched from Ny-Ålesund. Paul B. Voss developed the CMET balloons, and they are adapted to operate in the Arctic environment. They ...

I senere tid har nedbørsestimater ved bruk av satellitter (SPE – Satellite Precipitation Estimates) blitt vanlig i bruk tilknyttet forskning relatert til f.eks. hydrologi. Dette er data i høy oppløsning, som registreres ...

Abstract The influence of acetate ion on the calcite precipitation kinetics has been studied using a continuously stirred mixed flow reactor supplied with calcium carbonate supersaturated solution seeded by Iceland spar ...

This thesis contains modelling study of groundwater flow in the Chikwawa district, lower Shire Area in the southern regions of Malawi, in order to test out the working hypothesis that deeper groundwater circulation and ...

The Svelvik ridge was approved by local authorities as a CO2 field lab in 2008 and the appraisal phase for this project was completed in the summer of 2010. This operation gave a valuable insight of the subsurface and ...

Abstract Seismic time migration is a cost and time effective process for imaging of the subsurface. However, the approach is traditionally limited to velocity models with mildly varying lateral variations. The objective ...

This thesis investigates the application of the Empirical Mode Decomposition (EMD) and Ensemble Empirical Mode Decomposition (EEMD) techniques in de-noising of marine seismic data. EMD decomposes the seismic dataset into ...

Norway is a country that is frequently exposed to extreme weather events (EWEs).Norway experienced EWEs every year. The characteristic of extreme weather events is that they occur infrequently and normally result in ...

The newly discovered Ritland impact structure is located in Hjelmeland Municipality in Rogaland County, Western Norway. The structure is 2,7 km in diameter, about 350 meters deep and probably of Early/Middle Cambrian age. ...

To identify possible protosources for the Asker Group 573 in situ LA-MC-ICPMS uranium-lead and 509 lutetium-hafnium analyses were performed on detrital zircon grains from seven samples. The samples from the Kolsås and ...

The Arctic Ocean is supplied with water from the Atlantic and Pacific through the Nordic Seas and the Bering Strait. Changes in temperature, salinity and density are seen in the Amundsen, Makarov and Beaufort Basins. The ...

IPCC results indicate that the main bulk of uncertainties on global warming is within aerosol-cloud interactions. Based on observations this thesis aims to measure how anthropogenic aerosol from mid-latitudes increase ...

The polar low in the Norwegian Sea on March 16-17 2008 has been studied using both weather analysis and the numerical weather prediction (NWP) model weather research and forecasting (WRF). This particular polar low was ...

Extreme mesoscale weather in the Arctic region often forms in the vicinity of the ice edge. A polar low was observed in the region between Svalbard and the ice cap, 8. january 2010. This was the first polar low to have ...

I denne oppgaven har vi studert lavfrekvent variabiliteten i havet gjennom det 20-århundret. I tillegg til observasjoner har vi brukt data fra fire klimamodeller; CCSM3, Gfdl-CM2.0, BCM2.0 og HadCM3, som er kjørt med ...