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Sedimentological and ichnological signatures of an offshore-transitional hyperpycnal system (Late Miocene, Betic Cordillera, Southern Spain) 
García-García, Fernando; Rodríguez-Tovar, Francisco J.; Poyatos More, Miquel; Yeste, Luis M.; Viseras, César (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2021)
Hyperpycnal flows have been widely described in different lacustrine and marine environments but sedimentary structures and fossil content in hyperpycnites often offer limited information about the palaeoenvironmental ...
Tracing volcanic emissions from the Central Atlantic Magmatic Province in the sedimentary record 
Lindström, Sofie; Callegaro, Sara; Davies, Joshua H.F.L.; Tegner, Christian; Marzoli, Andrea; van de Schootbrugge, Bas; Krarup Pedersen, Gunver; Youbi, Nasrrddine; Sanei, Hamed (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
The end-Triassic mass extinction (ETME) is thought to have been caused by voluminous, pulsed volcanic activity of the Central Atlantic Magmatic Province (CAMP). Over the last decades, various geochemical signals and proxy ...
Genesis and decay of mesoscale baroclinic eddies in the seasonally ice-covered Arctic Ocean 
Meneghello, Gianluca; Marshall, John; Lique, Camille; Isachsen, Pål Erik; Doddridge, Edward; Campin, Jean-Michel; Regan, Heather; Talandier, Claude (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Abstract Observations of ocean currents in the Arctic interior show a curious, and hitherto unexplained, vertical and temporal distribution of mesoscale activity. A marked seasonal cycle is found close to the surface: ...
Extreme Precipitation Changes in Europe from the Last Millennium to the End of the Twenty-First Century 
Huo, Ran; Li, Lu; Chen, Hua; Xu, Chong-Yu; Chen, Jie; Guo, Shenglian (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
Abstract In this study, we aim to better understand the current and future projections of precipitation extremes in Europe in the context of climatic variability over a long-term period from the last millennium to the end ...
Structure-From-Motion Photogrammetry of Antarctic Historical Aerial Photographs in Conjunction with Ground Control Derived from Satellite Data 
Child, Sarah F.; Stearns, Leigh A; Girod, Luc Maurice Ramuntcho; Brecher, Henry H (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
A longer temporal scale of Antarctic observations is vital to better understanding glacier dynamics and improving ice sheet model projections. One underutilized data source that expands the temporal scale is aerial ...
Reservoir quality and prospectivity of Lower – Middle Mesozoic sandstones of the Barents Shelf: A multidisciplinary approach for constraining source-to-sink relationships and subsequent burial diagenesis 
Line, Lina Hedvig (Doctoral thesis / Doktoravhandling, 2020)
Siliciclastic sandstones constitute important reservoirs for subsurface storage of water, oil and natural gas. Knowledge of the geological processes enhancing or reducing the key reservoir properties – porosity and ...
Enhancing the confidence in estimates of effective radiative forcing by aerosol through improved global modelling 
Karset, Inger Helene Hafsahl (Doctoral thesis / Doktoravhandling, 2020)
Mobility of Chemical Elements in Bauxite Residue: A case study from NE Brazil Restricted Access
Wik, Sebastian Aas (Master thesis / Masteroppgave, 2020)
Comparing the performance of machine learning-based methods to traditional temperature threshold methods for precipitation phase partitioning across Norway 
Tangen, Mina (Master thesis / Masteroppgave, 2020)
Partitioning precipitation into rain and snow is of pivotal importance in hydrological models. Errors in correctly determining precipitation phase at the surface can propagate into other parts of the model, and there is a ...
Laboratory Modeling of Surface Deformation induced by the Emplacement of a Laterally Propagating Dyke Implications for Geodesy 
Abrahamsen, Daniel (Master thesis / Masteroppgave, 2020)
Large-scale atmospheric setup leading to daily extreme precipitation events in Svalbard 
Kvasnes, Lasse Nygaard (Master thesis / Masteroppgave, 2020)
Quantitative analysis of source, reservoir, and cap rocks on the Norwegian Continental Shelf: An integrated study of geology, geophysics, petrophysics and rock physics 
Hansen, Jørgen André (Doctoral thesis / Doktoravhandling, 2020)
Modern seismic exploration for hydrocarbons in the subsurface relies on a good understanding of how different rock properties influence the remotely recorded seismic response. The bridge between the geological properties, ...
Fluorinated Precursor Compounds in Sediments as a Source of Perfluorinated Alkyl Acids (PFAA) to Biota 
Langberg, Håkon Austad; Breedveld, Gijs D.; Slinde, Gøril Aasen; Grønning, Hege Mentzoni; Høisæter, Åse; Jartun, Morten; Rundberget, Thomas; Jenssen, Bjørn Munro; Hale, Sarah (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The environmental behavior of perfluorinated alkyl acids (PFAA) and their precursors was investigated in lake Tyrifjorden, downstream a factory producing paper products coated with per- and polyfluorinated alkyl substances ...
Acoustic, elastic and physical properties of overconsolidated sands and reservoir fluids: Experimental measurements, modelling, and implications for reservoir characterization, time-lapse seismic monitoring, and geomechanics 
Narongsirikul, Sirikarn (Doctoral thesis / Doktoravhandling, 2020)
Hydrocarbons in easily accessible areas have been explored on the Norwegian continental shelf, with much of it having been tapped out to supply the world’s energy demand. The growing consumption and demand have driven ...
Reservoir assessment of Middle Jurassic sandstone-dominated formations in the Egersund Basin and Ling Depression, eastern Central North Sea 
Hansen, Jørgen André; Mondol, Nazmul Haque; Jahren, Jens; Tsikalas, Filippos (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Reservoir quality assessment was conducted from petrophysical analysis and rock physics diagnostics on 15 wells penetrating Middle Jurassic sandstone reservoir formations in different regions of the eastern Central North ...
Tidal amplification and along‐strike process variability in a mixed‐energy paralic system prograding onto a low accommodation shelf, Edgeøya, Svalbard 
Anell, Ingrid Margareta; Zuchuat, Valentin; Röhnert, A.D.; Smyrak-Sikora, Aleksandra; Buckley, Simon John; Lord, Gareth Steven; Maher, H.; Midtkandal, Ivar; Ogata, Kei; Olaussen, Snorre; Osmundsen, Per Terje; Braathen, Alvar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The study describes the depositional development and sediment partitioning in a prograding paralic Triassic succession. The deposits are associated with the advance of large prism‐scale clinoforms across a shallower platform ...
Candidate genes for monitoring hydrogen peroxide resistance in the salmon louse, Lepeophtheirus salmonis 
Agusti-Ridaura, Celia; Bakke, Marit J; Helgesen, Kari O; Sundaram, Arvind Y M; Bakke, Sigrid J; Kaur, Kiranpreet; Horsberg, Tor E (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Background Hydrogen peroxide (H2O2) is one of the delousing agents used to control sea lice infestations in salmonid aquaculture. However, some Lepeophtheirus salmonis populations have developed resistance towards H2O2. ...
Experimental investigation of natural fracture stiffness and flow properties in a faulted CO2 bypass system (Utah, USA) 
Skurtveit, Elin; Sundal, Anja; Bjørnarå, Tore Ingvald; Soldal, Magnus; Sauvin, Guillaume; Zuchuat, Valentin; Midtkandal, Ivar; Braathen, Alvar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Fracture stiffness and flow properties have been measured in the laboratory using naturally fractured fault rock samples from the Little Grand Wash fault, Utah, USA. We compare fracture closure and related flow change ...
Paleoclimate in the Cenozoic time: Quantifying the role of North Atlantic plate tectonics and mantle processes 
Straume, Eivind Olavson (Doctoral thesis / Doktoravhandling, 2020)
In the Cenozoic time (66 – 0 Ma) the global climate changed from greenhouse to icehouse conditions. Changes in continents and ocean geometry, geography, and topography due to plate tectonics, erosion, and mantle dynamics ...
From river to delta: down-dip changes in facies, architecture, and key stratigraphic surfaces in a low-accommodation setting 
van Yperen, Anna Elisabeth (Doctoral thesis / Doktoravhandling, 2020)
This PhD thesis is a collection of four articles that investigate the influence of a low-accommodation setting on down-dip changes in facies, architecture and key stratigraphic surfaces in fluvio-deltaic transects. The ...
Sea-ice Response to the 536/540 CE Double Volcanic Eruption Event 
Aukan, Ingvild Sofie Sundby (Master thesis / Masteroppgave, 2020)
The role of sea ice in the climate response after the 536 and 540 CE volcanic eruptions hasbeen investigated through MPI-ESM simulations with imposed volcanic forcing. There is aclear response in the Arctic sea-ice cover ...
Regional Structure and Basin Development of the mid-Norwegian Volcanic Passive Margin: Anatomy of a Polyphased Rifted System 
Zastrozhnov, Dmitry (Doctoral thesis / Doktoravhandling, 2020)
The interior of the Norwegian Sea, or in the regional geological nomenclature “mid-Norwegian passive margin”, contains of about 20% of total oil and gas resources of the Norwegian Continental Shelf. However, the significant ...
Bounding global aerosol radiative forcing of climate change 
Bellouin, Nicolas; Quaas, Johannes; Gryspeerdt, Edward; Kinne, Stephan A.; Stier, Philip; Watson-Parris, Duncan; Boucher, Oliviér; Carslaw, Kenneth S.; Christensen, Matthew W.; Daniau, Anne-Laure; Dufresne, Jean-Louis; Feingold, Graham; Fiedler, Stephanie; Forster, Piers Maxwell; Gettelman, Andrew; Haywood, Jim M.; Lohmann, Ulrike; Malavelle, Florent F.; Mauritsen, Thorsten; McCoy, Daniel T.; Myhre, Gunnar; Mülmenstädt, Johannes; Neubauer, David; Possner, Anna; Rugenstein, Maria A.A.; Sato, Yousuke; Schulz, Michael; Schwartz, Stephen E.; Sourdeval, Odran; Storelvmo, Trude; Toll, Velle; Winker, David M.; Stevens, Björn (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Aerosols interact with radiation and clouds. Substantial progress made over the past 40 years in observing, understanding, and modeling these processes helped quantify the imbalance in the Earth's radiation budget caused ...
Hydrologic model forcing over the Himalaya 
Bhattarai, Bikas Chandra (Doctoral thesis / Doktoravhandling, 2020)
In the Himalayas –the mountain range in Asia, there is a high demand for hydro-meteorological datasets for the water resource management. Hydro-meteorological observations is minimal because of the adverse geographical ...
Stability and Solid Solutions of Hydrous Alumino-Silicates in the Earth’s Mantle 
Panero, Wendy; Caracas, Razvan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The degree to which the Earth’s mantle stores and cycles water in excess of the storage capacity of nominally anhydrous minerals is dependent upon the stability of hydrous phases under mantle-relevant pressures, temperatures, ...
Fluid Geochemistry and Migration Processes at the Lusi Mud Eruption, Indonesia 
Zaputlyaeva, Alexandra (Doctoral thesis / Doktoravhandling, 2020)
Lusi is a large hydrothermal vent system, constantly erupting since 14 years in the East Java sedimentary basin. Its activity is fuelled by a subsurface magmatic intrusion and associated hydrothermal fluid migration taking ...
Helicopter Triggered Lightning in Norway 
Langvatn, Johannes Tobiassen (Master thesis / Masteroppgave, 2020)
Helicopters are sometimes hit by lightning when flying offshore along the coast of Norway. Often, the helicopter’s presence is what triggers the lightning strike, and this phenomenon is called Helicopter Triggered Lightning ...
Structural analysis of Horda Platform and Stord Basin in the Norwegian North Sea using Machine Learning methods Restricted Access
Ahmed, Shajahat (Master thesis / Masteroppgave, 2020)
Usage of SIMWE model to model urban overland flood: a case study in Oslo 
Li, Hong; Gao, Hongkai; Zhou, Yanlai; Xu, Chong-Yu; Ortega, Rengifo; Sælthun, Nils Roar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract There has been a surge of interest in the field of urban flooding in recent years. However, current stormwater management models are often too complex to apply on a large scale. To fill this gap, we use ...
Layering in shales controls microfracturing at the onset of primary migration in source rocks 
Chauve, Thomas; Scholtes, Luc; Donzé, Frédéric-Victor; Mondol, Nazmul Haque; Renard, Francois (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The process of primary migration, which controls the transfer of hydrocarbons from source to reservoir rocks, necessitates the existence of fluid pathways in low permeability sedimentary formations. Primary migration starts ...
Aspects of automated seismic interpretation 
Bugge, Aina Juell (Doctoral thesis / Doktoravhandling, 2020)
The interpretation of seismic data is an integrated process that requires geophysical knowledge and an intuitive geological understanding. While seismic interpretation is essential in order to accumulate knowledge and build ...
Real time 3D observations of Portland Cement Carbonation at CO2 storage conditions 
Chavez Panduro, Elvia Anabela; Cordonnier, Benoit; Gawel, Kamila; Børve, Ingrid; Iyer, Jaisree; Carroll, Susan; Michels Brito Miranda, Leander Edward; Rogowska, Melania; McBeck, Jessica Ann; Sørensen, Henning Osholm; Walsh, Stuart D.C.; Renard, Francois; Gibaud, Alain; Torsæter, Malin; Breiby, Dag Werner (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Depleted oil reservoirs are considered a viable solution to the global challenge of CO2 storage. A key concern is whether the wells can be suitably sealed with cement to hinder the escape of CO2. Under reservoir conditions, ...
WACCM simulations: Decadal winter-to-spring climate impact on middle atmosphere and troposphere from medium energy electron precipitation 
Guttu, Sigmund; Orsolini, Yvan J.; Stordal, Frode; Limpasuvan, Varavut; Marsh, Daniel R. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Energetic particle precipitation is one of the main processes by which the sun influences atmospheric composition and structure. The polar middle atmosphere is chemically disturbed by the precipitation-induced production ...
Complexity revealed in the greening of the Arctic 
Myers-Smith, Isla H.; Kerby, Jeffrey T.; Phoenix, Gareth K.; Bjerke, Jarle W.; Epstein, Howard E.; Assmann, Jakob J.; John, Christian; Andreu-Hayles, Laia; Angers-Blondin, Sandra; Beck, Pieter S. A.; Berner, Logan T.; Bhatt, Uma S.; Bjorkman, Anne D.; Blok, Daan; Bryn, Anders; Christiansen, Casper Tai; Cornelissen, J. Hans C.; Cunliffe, Andrew M.; Elmendorf, Sarah C.; Forbes, Bruce C.; Goetz, Scott J.; Hollister, Robert D.; de Jong, Rogier; Loranty, Michael M.; Macias-Fauria, Marc; Maseyk, Kadmiel; Normand, Signe; Olofsson, Johan; Parker, Thomas C.; Parmentier, Frans-Jan W.; Post, Eric; Schaepman-Strub, Gabriela; Stordal, Frode; Sullivan, Patrick F.; Thomas, Haydn J.D.; Tømmervik, Hans; Treharne, Rachael; Tweedie, Craig E.; Walker, Donald A.; Wilmking, Martin; Wipf, Sonja (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
As the Arctic warms, vegetation is responding, and satellite measures indicate widespread greening at high latitudes. This ‘greening of the Arctic’ is among the world’s most important large-scale ecological responses to ...
Supradetachment to rift basin transition recorded in continental to marine deposition; Paleogene Bandar Jissah Basin, NE Oman 
Serck, Christopher Sæbø; Braathen, Alvar; Olaussen, Snorre; Osmundsen, Per Terje; Midtkandal, Ivar; van Yperen, Anna Elisabeth; Indrevær, Kjetil (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
A transition from supradetachment to rift basin signature is recorded in the ~1,500 m thick succession of continental to shallow marine conglomerates, mixed carbonate‐siliciclastic shallow marine sediments and carbonate ...
Evaluating satellite retrieved fractional snow-covered area at a high-Arctic site using terrestrial photography 
Aalstad, Kristoffer; Westermann, Sebastian; Bertino, Laurent (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The seasonal snow-cover is one of the most rapidly varying natural surface features on Earth. It strongly modulates the terrestrial water, energy, and carbon balance. Fractional snow-covered area (fSCA) is an essential ...
. The coupled effects of mantle mixing and a water-dependent viscosity on the surface ocean. Phys. Chem. Minerals 47, 11 
van Driel, J; Schusteritsch, G; Brodholt, John Peter; Dobson, DP; Pickard, CJ (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
MgO makes up about 20% of the Earth’s lower mantle; hence, its rheological behaviour is important for the dynamics and evolution of the Earth. Here, we investigate the strength of twin boundaries from 0 to 120 GPa using ...
Effects of stress reduction on geomechanical and acoustic relationship of overconsolidated sands 
Narongsirikul, Sirikarn; Mondol, Nazmul Haque; Jahren, Jens (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Relationship between different geomechanical and acoustic properties measured from seven laboratory tested unconsolidated natural sands with different mineralogical compositions and textures were presented. The samples ...
The Past as a Mirror: Deep Time Climate Change Exemplarity in the Anthropocene 
Svensen, Henrik; Bjærke, Marit Ruge; Kverndokk, Kyrre (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
During the past decades, notions of Earth dynamics and climate change have changed drastically, as anthropogenic CO2-emissions are linked to measurable Earth system changes. At the same time, Earth scientists have discovered ...
Evaluation of regionalization methods for runoff prediction in ungauged basins in Norway 
Yang, Xue (Doctoral thesis / Doktoravhandling, 2020)
Regionalization is a common approach for runoff prediction in the basin lacking observed discharge data (called ungauged basin). Regionalization is the process of borrowing information (e.g. the hydrological model parameters) ...
The role of subduction in the formation and evolution of continental fragments and microcontinents 
van den Broek, Joost Martijn (Doctoral thesis / Doktoravhandling, 2020)
Microcontinents are small continental pieces that have been separated from their parent continent. We often find such microcontinents in oceans that form after the breakup of a large continent (e.g. the North Atlantic, ...
The presence, emission and partitioning behavior of polychlorinated biphenyls in waste, leachate and aerosols from Norwegian waste-handling facilities 
Arp, Hans Peter; Morin, Nicolas; Andersson, Patrik L.; Hale, Sarah; Wania, Frank; Breivik, Knut; Breedveld, Gijs D. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Even though production and open use of polychlorinated biphenyls (PCBs) have been phased out in Western industrialised countries since the 1980s, PCBs were still present in waste collected from different waste handling ...
The formation of continental fragments in subduction settings: the importance of structural inheritance and subduction system dynamics 
van den Broek, Joost Martijn; Magni, Valentina; Gaina, Carmen; Buiter, Susanne (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Microcontinents and continental fragments are pieces of continental lithosphere, formed by extension and breakup, followed by plate boundary relocations. Microcontinents or continental fragments affiliated with passive ...
A physically based approach to simulate sub-grid snow depth and ground surface temperature distribution Restricted Access
Zweigel, Robin Benjamin (Master thesis / Masteroppgave, 2020)
Distribution of ribbed moraines and their connection to subglacial water - in the Oppland region of Norway 
Sommerkorn, Joscha (Master thesis / Masteroppgave, 2020)
The origin of ribbed moraines (Rogen moraine) is a long-discussed topic in the field of geomorphology. As per today, no consensus on their formation has been reached apart from a subglacial origin. This study will test the ...
Slowdown of the Atlantic meridional overturning circulation in a coupled simulation 
Iversen, Silje Christine (Master thesis / Masteroppgave, 2020)
The Atlantic meridional overturning circulation (AMOC) is projected to weaken under global warming. This study investigates this weakening overturning and addresses the question regarding which aspects lead to such a ...
An ontology-based knowledge model for the deep-marine clastic depositional system 
Qu, Yuanwei (Master thesis / Masteroppgave, 2020)
Comparison of the tropical tropopause in ECMWF reanalyses and GPS-RO satellite observation 
Mehren, Johanne (Master thesis / Masteroppgave, 2020)
The tropical tropopause layer TTL acts as the gateway for water vapor and other chemical tracers to the stratosphere, and is important for the chemical composition and radiative balance. In this thesis, two reanalyses from ...
Pressure and inertia sensing drifters for glacial hydrology flow path measurements 
Alexander, Andreas; Kruusmaa, Maarja; Tuhtan, Jeffrey; Hodson, Andrew; Schuler, Thomas; Kääb, Andreas (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Glacial hydrology plays an important role in the control of glacier dynamics, of sediment transport, and of fjord and proglacial ecosystems. Surface meltwater drains through glaciers via supraglacial, englacial and subglacial ...
Evolving viscous anisotropy in the upper mantle and its geodynamic implications 
Kiraly, Agnes; Conrad, Clinton Phillips; Hansen, Lars N. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Asthenospheric shear causes some minerals, particularly olivine, to develop anisotropic textures that can be detected seismically. In laboratory experiments, these textures are also associated with anisotropic viscous ...
The Sveconorwegian orogeny – reamalgamation of the fragmented southwestern margin of Fennoscandia 
Slagstad, Trond; Marker, Mogens; Roberts, Nick M.W.; Saalmann, Kerstin; Kirkland, Christopher L.; Kulakov, Evgeniy; Ganerød, Morgan; Røhr, Torkil Sørlie; Møkkelgjerd, Steinar Halvdan Hansen; Granseth, Anette; Sørensen, Bjørn Eske (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The Sveconorwegian orogeny encompasses magmatic, metamorphic and deformational events between ca. 1140 and 920 Ma at the southwestern margin of Fennoscandia. In recent years, the tectonic setting of this nearly 200 Myr-long ...
Distinct petrographic responses to basin reorganization across the Triassic–Jurassic boundary in the southwestern Barents Sea 
Line, Lina Hedvig; Müller, Reidar; Klausen, Tore Grane; Jahren, Jens; Hellevang, Helge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
A general shift towards higher mineralogical and textural maturity changes the reservoir character across the Triassic–Jurassic transition in the southwestern Barents Sea basin (SWBSB), largely affecting the hydrocarbon ...
Surface temperature response to regional black carbon emissions: do location and magnitude matter? 
Sand, Maria; Berntsen, Terje Koren; Ekman, Annica M.L.; Lewinschal, Anna; Hansson, Hans-Christen (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Aerosol radiative forcing can influence climate both locally and far outside the emission region. Here we investigate black carbon (BC) aerosols emitted in four major emission areas and evaluate the importance of emission ...
Exploring Impacts of Size-Dependent Evaporation and Entrainment in a Global Model 
Karset, Inger Helene H.; Gettelman, Andrew; Storelvmo, Trude; Alterskjær, Kari; Berntsen, Terje Koren (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
While most observations indicate well-buffered clouds to aerosol perturbations, global models do not. Among the suggested mechanisms for this discrepancy is the models' lack of connections between cloud droplet size and ...
Marine faunas of the Preboreal stage in the Oslo area 
Johansen, Renate Rosseland (Master thesis / Masteroppgave, 2020)
The early Holocene marine faunas of the Oslo area were studied in classical works by Brøgger (1901) and others, but there has been relatively little research in recent decades. Classical fossil localities near the marine ...
Stokes drift induced by topographic waves over an enclosed basin shelf 
Ghaffari, Peygham; Weber, Jan Erik H.; Nøst, Ole Anders; Drivdal, Magnus (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The effect of the continental shelf wave on the flow field over the southern shelf of the Caspian Sea (CS) as the largest enclosed basin of the world, is investigated. Considerable currents with subinertial time scales are ...
Caprock characterization of Upper Jurassic organic-rich shales using acoustic properties, Norwegian Continental Shelf 
Hansen, Jørgen André; Mondol, Nazmul Haque; Tsikalas, Filippos; Faleide, Jan Inge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Our analysis of a comprehensive well log database and complementary mineralogical and geochemical information indicates that the risk for Upper Jurassic shales on the Norwegian Continental Shelf (NCS) to permit severe ...
Strength characterisation of crystalline rocks as a function of lithology, texture, retrogression, alteration and fracture densities Restricted Access
Czekaj, Aleksandra Maria (Master thesis / Masteroppgave, 2020)
Abrasion and wearing resistance of a rock aggregate are essential factors for utilisa- tion in road construction purposes. These two properties are measured by two tests, Los Angeles (LA)- and Micro-Deval (MD)-test methods. ...
Evolution of the 2018 European heatwave 
Sagen, Stine (Master thesis / Masteroppgave, 2020)
This master study addresses the monthly evolution from April to September of the extremeheat wave that occurred in Europe in 2018. Heat waves cause serious hazards related to regionaleconomics, ecosystems, human health and ...
Jurassic - Cretaceous stratigraphic development of the Mandawa Basin, Tanzania: An integrated sedimentological and heavy mineral study of the early post-rift succession 
Fossum, Katrine (Doctoral thesis / Doktoravhandling, 2020)
The Gydratny Fault zone of Lake Baikal 
Solovyeva, M; Akhmanov, G; Mazzini, Adriano; Khabuev, A; Khlystov, Oleg (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The Central basin of Lake Baikal is intersected by the North-East – South-West-oriented escarpment named the «Gydratny Fault zone». This laterally extensive structure runs subparallel to the North-Western shore of the lake. ...
The 30 June 2017 North Sea Earthquake: Location, Characteristics, and Context 
Jerkins, Annie; Shiddiqi, Hasbi Ash; Kværna, Tormod; Gibbons, Steven John; Schweitzer, Johannes; Ottemöller, Lars; Bungum, Hilmar (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
The Mw 4.5 southern Viking graben earthquake on 30 June 2017 was one of the largest seismic events in the Norwegian part of the North Sea during the last century. It was well recorded on surrounding broadband seismic ...
Global Cenozoic Paleobathymetry with a focus on the Northern Hemisphere Oceanic Gateways 
Straume, Eivind Olavson; Gaina, Carmen; Medvedev, Sergei; Nisancioglu, Kerim Hestnes (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The evolution of the Northern Hemisphere oceanic gateways has facilitated ocean circulation changes and may have influenced climatic variations in the Cenozoic time (66 Ma–0 Ma). However, the timing of these oceanic gateway ...
Late Mesozoic-Cenozoic tectono-stratigraphic evolution of the Vesterålen margin, offshore northern Norway 
Meza, Juan Camilo (Master thesis / Masteroppgave, 2020)
Available 2D multi-channel seismic profiles and a 3D seismic survey are utilized together with potential field and limited well data to study the Late Mesozoic-Cenozoic tectono-stratigraphic evolution of the Vesterålen ...
Structural deformation and mineralogy of the Agardhfjellet and Rurikfjellet formations in central Spitsbergen, Svalbard 
Løvlie, Karoline Helen (Master thesis / Masteroppgave, 2020)
The Upper Jurassic-Lower Cretaceous Agardhfjellet and Rurikfjellet formations comprise a 450 m thick shale-dominated succession. This succession is present across central parts of Spitsbergen, Svalbard, and is the targeted ...
Indoor 3D reconstruction by Lidar and IMU and point cloud segmentation and compression with machine learning 
Haugsten Hansen, Henry (Master thesis / Masteroppgave, 2020)
The effect of slab gaps on subduction dynamics and mantle upwelling 
Kiraly, Agnes; Portner, Daniel E.; Haynie, Kirstie L.; Chilson-Parks, Benjamin H.; Ghosh, Tithi; Jadamec, Margarete; Makushkina, Anna; Manga, Michael; Moresi, Louis; O'Farrell, Keely A. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Gaps within a subducting plate can alter the surrounding mantle flow field and the overall subduction zone dynamics by allowing hot sub-slab mantle to flow through the gaps and into the mantle wedge. This through-slab flow ...
P wawe anisotropy caused by partial eclogitization of descending crust demonstrated by modelling effective petrophysical properties 
Zertani, Sascha; Vrijmoed, Johannes Christiaan; Tilmann, Frederik; John, Timm; Andersen, Torgeir Bjørge; Labrousse, Loic (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
eismological studies of large-scale processes at convergent plate boundaries typically probe lower crustal structures with wavelengths of several kilometers, whereas field-based studies typically sample the resulting ...
A tracer-based algorithm for automatic generation of seafloor age grids from plate tectonic reconstructions 
Karlsen, Krister Stræte; Domeier, Mathew; Gaina, Carmen; Conrad, Clinton Phillips (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The age of the ocean floor and its time-dependent age distribution control fundamental features of the Earth, such as bathymetry, sea level and mantle heat loss. Recently, the development of increasingly sophisticated ...
A Multiple 1D Earth Approach (M1DEA) to account for lateral viscosity variations in solutions of the sea level equation: An application for glacial isostatic adjustment by Antarctic deglaciation 
Hartmann, Robert; Ebbing, Jörg; Conrad, Clinton Phillips (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
The pseudo-spectral form of the sea level equation (SLE) requires the approximation of a radially-symmetric visco-elastic Earth. Thus, the resulting predictions of sea level change (SLC) and glacial isostatic adjustment ...
Permo-Triassic basin development on the Horda Platform and Stord Basin – Pre-rift architecture and rift phase 1 evolution 
Nipen, Helge (Master thesis / Masteroppgave, 2020)
Abstract The northern Horda Platform and Stord Basin is a part of the multi-phase North Sea rift system. Crustal extension of the area have taken place since the Devonian, in several pulses of rift activity. This study ...
Recent magmatism drives hydrocarbon generation in north-east Java, Indonesia 
Zaputlyaeva, Alexandra; Mazzini, Adriano; Blumenberg, Martin; Scheeder, Georg; Kürschner, Wolfram Michael; Kus, Jolanta; Jones, Morgan Thomas; Frieling, Joost (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Conventional studies of petroleum basins associate oil generation with the gradual burial of organic-rich sediments. These classical models rely on the interplay between pressure, temperature, and the time required for ...
Digital Drill Core Models: Structure-from-Motion as a Tool for the Characterisation, Orientation, and Digital Archiving of Drill Core Samples 
Betlem, Peter; Birchall, Thomas; Ogata, Kei; Park, Joonsang; Skurtveit, Elin; Senger, Kim (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Structure-from-motion (SfM) photogrammetry enables the cost-effective digital characterisation of seismic- to sub-decimetre-scale geoscientific samples. The technique is commonly used for the characterisation of outcrops, ...
The Lycksele Ring Structure - Still no Proof of an Impact Origin 
Holmqvist, Anders; Alwmark, Carl; Dypvik, Henning; Nilsen, Odd (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The origin of the more than 100 km wide Lycksele ring structure in Sweden has puzzled geoscientists for years. In this short note we present results from field analysis, detailed sampling and laboratory analysis executed ...
Laboratory modeling of the initiation of strike-slip faulting 
Ellingsen, Torjus Lømo (Master thesis / Masteroppgave, 2020)
Variability and past long-term changes of brominated very short-lived substances at the tropical tropopause 
Tegtmeier, Susann; Krüger, Kirstin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract. Halogenated very short-lived substances (VSLSs), such as bromoform (CHBr3), can be transported to the stratosphere and contribute to the halogen loading and ozone depletion. Given their highly variable emission ...
From Caledonian collapse to North Sea Rift: The extended history of a metamorphic core complex 
Wiest, Johannes; Wrona, Thilo; Bauck, Marit Stokke; Fossen, Haakon; Gawthorpe, Rob; Osmundsen, Per Terje; Faleide, Jan Inge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Extensional systems evolve through different stages due to changes in the rheological state of the lithosphere. It is crucial to distinguish ductile structures formed before and during rifting, as both cases have important ...
Interaction of deformation bands and fractures during progressive strain in monocline - San Rafael Swell, Central Utah, USA 
Braathen, Alvar; petrie, elisabeth; Nystuen, Tonje; Sundal, Anja; Skurtveit, Elin; Zuchuat, Valentin; Gutierrez, Marte; Midtkandal, Ivar (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Folds in porous sandstone in cases allow identification of progressive deformation in an evolving strain field. In the Navajo Sandstone of the km-scale Laramide-style monocline of the San Rafael Swell (Utah, USA), four ...
Attribution analysis on regional differentiation of water resources variation in the yangtze river basin under the context of globalwarming 
Ye, Xuchun; Zhang, Zengxin; Xu, Chong-Yu; Liu, Jia (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Characterized by increasing surface air temperature, global warming has altered the hydrological cycle at global and regional scales. In order to adapt water resources management under the context of global warming, ...
Amorphous Calcium–Magnesium Carbonate (ACMC) Accelerates Dolomitization at Room Temperature under Abiotic Conditions 
Montes-Hernandez, German; Renard, Francois; Auzende, Anne Line; Findling, Nathaniel (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
The challenge to produce dolomite CaMg(CO3)2 at low temperature (20–35 °C) over laboratory time scales so far has remained unsuccessful, which has led to long-lasting scientific debates in the last two centuries. This ...
Glacier changes in Iceland from 1890 to 2019 
Adalgeirsdottir, Gudfinna; Pálsson, Finnur; Thorsteinsson, Thorsteinn; Magnusson, Eyjólfur; Belart, Joaquin; Johannesson, T; Hannesdóttir, Hrafnhildur; Sigurðsson, Oddur; Gunnarsson, Andri; Einarsson, B; Berthier, Etienne; Schmidt, Louise Steffensen; Björnsson, Helgi (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The volume of glaciers in Iceland (∼3,400 km3 in 2019) corresponds to about 9 mm of potential global sea level rise. In this study, observations from 98.7% of glacier covered areas in Iceland (in 2019) are used to construct ...
Editorial: Sedimentary System Response to External Forcings: A Process-Based Perspective 
Romans, Brian W; Fosdick, Julie C; Poyatos More, Miquel; Helland-Hansen, William (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Twenty years of European mountain permafrost dynamics-the PACE legacy 
Etzelmüller, Bernd; Guglielmin, Mauro; Hauck, Christian; Hilbich, Christin; Hoelzle, Martin; Isaksen, Ketil; Noetzli, Jeannette; Oliva, Marc; Ramos, Miguel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
This paper reviews and analyses the past 20 years of change and variability of European mountain permafrost in response to climate change based on time series of ground temperatures along a south–north transect of deep ...
Meltwater sediment transport as the dominating process in mid-latitude trough mouth fan formation 
Bellwald, Benjamin; Planke, Sverre; Becker, Lukas; Myklebust, Reidun (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract Trough mouth fans comprise the largest sediment deposits along glaciated margins, and record Pleistocene climate changes on a multi-decadal time scale. Here we present a model for the formation of the North Sea ...
A combined stokes drift profile under swell and wind sea 
Breivik, Øyvind; Christensen, Kai Håkon (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract A combined directional Stokes drift profile for swell and wind sea is presented. The profile can be used to calculate the shear under crossing seas and as such is relevant for Langmuir turbulence and ...
Seismic-fluid detection-a review 
Fawad, Manzar; Hansen, Jørgen André; Mondol, Nazmul Haque (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Since the advent of seismic imaging techniques, the dream of geophysicists has been to identify the fluid effect and be able to accurately map hydrocarbon from the brine within a target reservoir. The usage of bright spots ...
Prolonged high-grade metamorphism of supracrustal gneisses from Muhlig-Hofmannfjella, central Dronning Maud Land (East Antarctica) 
Elvevold, Synnøve; Engvik, Ane; Abu-Alam, Tamer; Myhre, Per Inge; Corfu, Fernando (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2020)
The bedrock of Mühlig-Hofmannfjella, central Dronning Maud Land in eastern Antarctica, is part of the high-grade Maud Belt and comprises a deep-seated metamorphic-plutonic complex. The P-T-t evolution of anatectic supracrustal ...
A new high-resolution stratigraphic and palaeoenvironmental record spanning the End-Permian Mass Extinction and its aftermath in central Spitsbergen, Svalbard 
Zuchuat, Valentin; Sleveland, Arve; Twitchett, Richard; Svensen, Henrik; Turner, Holly E; Augland, Lars Eivind; Jones, Morgan Thomas; Hammer, Øyvind; Hauksson, Bjarki; Haflidason, Haflidi; Midtkandal, Ivar; Planke, Sverre (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Research on the Permian-Triassic boundary (PTB) along the northern margins of Pangaea (exposed today in the Arctic region) has been heavily reliant on field observations, where data resolution was consequently determined ...
Feedback between high-pressure genesis of abiotic methane and strain localization in subducted carbonate rocks 
Giuntoli, Francesco; Vitale Brovarone, Alberto; Menegon, Luca (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Fluid-rock interactions exert key control over rock rheology and strain localization. Redox may significantly affect the reaction pathways and, thereby, the mechanical properties of the rock. This effect may become critical ...
A framework to quantify the uncertainty contribution of GCMs over multiple sources in hydrological impacts of climate change 
Wang, Huimin; Chen, Jie; Xu, Chong-Yu; Zhang, J.K.; Chen, Hua (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The quantification of climate change impacts on hydrology is subjected to multiple uncertainty sources. Large ensembles of hydrological simulations based on multimodel ensembles (MMEs) have been commonly applied to represent ...
Dynamics of hydrological-model parameters: mechanisms, problems and solutions 
Xu, Chong-Yu; Lan, Tian; Lin, Kairong; Tan, Xuezhi; Chen, Xiaohong (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract. It has been demonstrated that the application of time-varying hydrological-model parameters based on dynamic catchment behavior significantly improves the accuracy and robustness of conventional models. However, ...
High transient stress in the lower crust: Evidence from dry pseudotachylytes in granulites, Lofoten Archipelago, northern Norway 
Dunkel, Kristina G; Zhong, Xin; Arnestad, Paal Ferdinand; Valen, Lars Vesterager; Jamtveit, Bjørn (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Seismic activity below the standard seismogenic zone is difficult to investigate because the geological records of such earthquakes, pseudotachylytes, are typically reacted and/or deformed. Here, we describe unusually ...
In situ observation of helium and argon release during fluid-pressure-triggered rock deformation 
Roques, Clement; Weber, Ulrich Wolfgang; Brixel, Bernard; Krietsch, Hannes; Dutler, Nathan; Brennwald, M.S.; Villiger, Linus; Doetsch, Joseph; Jalali, Mohammadreza; Gischig, Valentin; Amann, Florian; Valley, Benoit; Klepikova, Maria; Kipfer, Rolf (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Temporal changes in groundwater chemistry can reveal information about the evolution of flow path connectivity during crustal deformation. Here, we report transient helium and argon concentration anomalies monitored during ...
Palaeozoic-Mesozoic tectono-sedimentary evolution and magmatism of the Egersund Basin area, Norwegian central North Sea 
Kalani, Mohsen; Faleide, Jan Inge; Gabrielsen, Roy Helge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
This study focuses on the tectonic evolution of the greater Egersund Basin in the Norwegian central North Sea, with special emphasis on Late Paleozoic extensional tectonics following Caledonian collapse and the Variscan ...
U–Pb Age and Hf Isotope Geochemistry of Detrital Zircons from Cambrian Sandstones of the Severnaya Zemlya Archipelago and Northern Taimyr (Russian High Arctic) 
Ershova, Victoria; Prokopiev, Andrei; Khudoley, Andrey; Andersen, Tom; Kullerud, Kåre; Kolchanov, Daniil (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
U–Pb and Lu–Hf isotope analyses of detrital zircons collected from metasedimentary rocks from the southern part of Kara Terrane (northern Taimyr and Severnaya Zemlya archipelago) provide vital information about the ...
Effect of Mineral Processes and Deformation on the Petrophysical Properties of Soft Rocks during Active Faulting 
Torabi, Anita; Jiménez-Millán, Juan; Jiménez-Espinosa, Rosario; García-Tortosa, Fransisco Juan; Ellingsen, Tor S.S. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
We have studied damage zones of two active faults, Baza and Padul faults in Guadix-Baza and Granada basins, respectively, in South Spain. Mineral and microstructural characterization by X-ray diffraction and field emission ...
Multivariate framework for the assessment of key forcing to Lake Malawi levels variations in non-stationary frequency analysis 
Ngongondo, Cosmo; Zhou, Yanlai; Xu, Chong-Yu (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract Lake Malawi in south eastern Africa is a very important freshwater system for the socio-economic development of the riparian countries and communities. The lake has however experienced considerable recession ...
Detection and attribution of flood responses to precipitation change and urbanization: a case study in Qinhuai River Basin, Southeast China 
Bian, G.D.; Du, Jinkang; Song, Mingming; Zhang, Xueliang; Zhang, Xingqi; Li, Runjie; Wu, Sengyao; Duan, Zheng; Xu, Chong-Yu (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
Abstract Both flood magnitude and frequency might change under the changing environment. In this study, a procedure combining statistical methods, flood frequency analysis and attribution analysis was proposed ...
Improving the Reliability of Probabilistic Multi‐Step‐Ahead Flood Forecasting by Fusing Unscented Kalman Filter with Recurrent Neural Network 
Zhou, Yanlai; Guo, Shenglian; Xu, Chong-Yu; Chang, Fi‐John; Yin, Jiabo (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
It is fundamentally challenging to quantify the uncertainty of data-driven flood forecasting. This study introduces a general framework for probabilistic flood forecasting conditional on point forecasts. We adopt an unscented ...
Temperature changes across the Paleocene-Eocene Thermal Maximum – a new high-resolution TEX86 temperature record from the Eastern North Sea Basin 
Stokke, Ella Wulfsberg; Jones, Morgan Thomas; Tierney, Jessica; Svensen, Henrik; Whiteside, Jessica H. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
The Paleocene-Eocene Thermal Maximum (PETM; ∼55.9 Ma) was a hyperthermal event associated with large carbon cycle perturbations, sustained global warming, and marine and terrestrial environmental changes. One possible ...
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