We apply a physically based coupled surface energy balance and snowpack model to a site close to the equilibrium line on Austfonna ice cap, Svalbard, over the 2004–08 melt seasons, to explain contributions to the energy ...

As part of the Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP), we evaluate the historical black carbon (BC) aerosols simulated by 8 ACCMIP models against observations including 12 ice core records, ...

[1] Black carbon (BC) and other light-absorbing particles deposited on snow and ice are known to perturb the surface radiative balance. There are few published observations of the concentration of these particles in the ...

The Laccadive–Chagos Ridge and Southern Mascarene Plateau in the north-central and western Indian Ocean, respectively, are thought to be volcanic chains formed above the Réunion mantle plume1 over the past 65.5 million ...

Arctic regions are generally nutrient limited, receiving an extensive part of their bio-available nitrogen from the deposition of atmospheric reactive nitrogen. Reactive nitrogen oxides, as nitric acid (HNO3) and nitrate ...

Sorted soil circles are a conspicuous form of periglacial patterned ground. Numerical modelling suggests that these features develop from a convection-like circulation of material in the active layer of permafrost. The ...

Estimates of the relative motion between the Hawaiian and Louisville hot spots have consequences for understanding the role and character of deep Pacific‐mantle return flow. The relative motion between these primary hot ...

Glacier mass balance in Norway is only observed over a small portion (15%) of the glacierized surface and only for short time periods (10 years) for most sites. To provide a comprehensive overview of the temporal mass-balance ...

Viscous convection within the mantle is linked to tectonic plate motions and deforms Earth’s surface across wide areas. Such close links between surface geology and deep mantle dynamics presumably operated throughout Earth’s ...

The impact of black carbon (BC) aerosols on the global radiation balance is not well constrained. Here twelve global aerosol models are used to show that at least 20% of the present uncertainty in modeled BC direct radiative ...

A new map of Jerlov’s optical water types in the Nordic Seas and adjacent waters at 139 locations, as well as a table with statistical and geographical properties of the vertical attenuation coefficient of downward irradiance ...

We report on the AeroCom Phase II direct aerosol effect (DAE) experiment where 16 detailed global aerosol models have been used to simulate the changes in the aerosol distribution over the industrial era. All 16 models ...

Skredfarekartlegging i Norge blir i dag i stor grad utført av eksterne selskaper på oppdrag fra Norges vassdrags- og energidirektorat (NVE), noe som fører til varierende tolkning av retningslinjer og detaljnivå. Målet med ...

[1] The hydrological impact of enhancing Earth's albedo by solar radiation management is investigated using simulations from 12 Earth System models contributing to the Geoengineering Model Intercomparison Project (GeoMIP). ...

[1] Marine cloud brightening through sea spray injection has been proposed as a method of temporarily alleviating some of the impacts of anthropogenic climate change, as part of a set of technologies called geoengineering. ...

[1] Among proposed mechanisms for counteracting global warming through solar radiation management is the deliberate injection of sea salt acting via marine cloud brightening and the direct effect of sea-salt aerosols. In ...

[1] Analysis of surface and atmospheric energy budget responses to CO2 and solar forcings can be used to reveal mechanisms of change in the hydrological cycle. We apply this energetic perspective to output from 11 fully ...

Cirrus clouds, thin ice clouds in the upper troposphere, have a net warming effect on Earth's climate. Consequently, a reduction in cirrus cloud amount or optical thickness would cool the climate. Recent research indicates ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 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 ...

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 ...

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 ...

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 ...

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, ...

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 ...

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 ...

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 ...

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 ...

A total of seventy reservoir core samples from nine wells of the Mid-Norway and the Barents Shelf were geochemically analyzed to compare the composition, alteration effects, maturation and organic facies. The analytical ...

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 ...

The study presented focuses on mapping and interpretation of the Caledonian structures on Hovedøya and Lindøya, in the inner Oslofjord. The bulk tectonic caledonian transport direction and structures within the study area ...

Svartodden leddet i Huk Formasjonen ved Slemmestad, Buskerud, har blitt undersøkt for å beskrive avsetningsmiljøet i området da sedimentene ble avsatt under tidsperioden Ordovicium. Svartodden leddet er rikt på endoceratide ...

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 ...

Wildfires are a source of major perturbations in the earth-atmosphere system. Between 1997 and 2008, an area of roughly 4 · 106 km2 has been burned each year. Among other species, wildfire aerosols consist of black carbon ...

The aims of this study were to assess the depositional and ecological developments of Drammensfjorden, SE Norway, under pre-anthropogenic influence and attempt to define recent conditions within the fjord, which may have ...

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 ...

Physical vulnerability is a key parameter in risk estimation. It defines the level of damage given that the hazard is realized, and hence translates hazard levels into risk levels. The quantitative assessment of vulnerability ...

Drinking water supplies are based on ground water resources all over the world. At some localities problems with higher concentrations of iron and manganese found in ground water. These higher concentration of these metals ...

Forty-eight (48) core samples from well 35/4-1, 6610/3-1 and well 6610/2-1S were obtained from the North Sea and the Norwegian Sea. These wells are classified by NPD as dry. These core samples have been studied geochemically, ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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 ...

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- ...

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 ...

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 ...

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 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 ...

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, ...

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 ...

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 ...

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 ...

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 ...

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 ...

The purpose of the thesis is to characterize the reservoir quality in the Middle and Upper Jurassic sandstone reservoirs in the South Viking Graben, with emphasis on the differences between the Hugin and Draupne formations. ...

Asterias Fault Complex is present in the SW Barnets Sea and is extensional in nature. This fault complex separates the Hammerfest Basin in south from the Loppa High in north Variations in structural trend and frequency of ...

The PDO approved Goliat Field, situated on the Finnmark Platform in SW Barents Sea region represents the first oil field to be developed on the Norwegian Barents shelf. Cenozoic exhumation still poses significant challenges ...

ABSTRACT This study investigates the diagenesis and reservoir quality of Upper Jurassic Sandstones from the Central Graben. Petrophysical and petrographical studies have been done on cored interval from well 2/1-6. Precipitation ...

Abstract In this thesis the Paleocene and Eocene transition is the main focus of the analyses of Svalbard cores BH 10/06, BH 07/08 and BH 09/06, from the Central Basin. Special emphasis is laid on biotic responses ...