Browsing Institutt for geofag by Title

Now showing items 856-875 of 2342

  • Galaxy: A Decade of Realising CWFR Concepts 
    Serrano-Solano, Beatriz; Fouilloux, Anne; Eguinoa, Ignacio; Kalaš, Matúš; Grüning, Björn; Coppens, Frederik (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Abstract Despite recent encouragement to follow the FAIR principles, the day-to-day research practices have not changed substantially. Due to new developments and the increasing pressure to apply best practices, ...
  • Gas hydrate stability zone of the Barents Sea and Kara Sea region 
    Klitzke, Peter; Luzi-Helbing, Manja; Schicks, Judith M.; Cacace, Mauro; Jacquey, Antoine B.; Sippel, Judith; Scheck-Wenderoth, Magdalena; Faleide, Jan Inge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2016)
    In this study we assess the present-day gas hydrate stability zone for the Barents Sea and Kara Sea region. Thereby, we make use of a data-based 3D lithosphere-scale pressure and thermal model. The resulting gas hydrate ...
  • Gas Migration Episodes Observed During Peridotite Alteration in the Samail Ophiolite, Oman 
    Aiken, John Mark; Sohn, Robert A.; Renard, Francois; Matter, Juerg; Kelemen, Peter; Jamtveit, Bjørn (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2022)
    Serpentinization and carbonation of mantle rocks (peridotite alteration) are fundamentally important processes for a spectrum of geoscience topics, including arc volcanism, earthquake processes, chemosynthetic biological ...
  • Gateway-driven weakening of ocean gyres leads to Southern Ocean cooling 
    Sauermilch, Isabel; Whittaker, Joanne M.; Klocker, Andreas; Munday, David R.; Hochmuth, Katharina; Bijl, Peter K.; Lacasce, Joseph Henry (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Abstract Declining atmospheric CO 2 concentrations are considered the primary driver for the Cenozoic Greenhouse-Icehouse transition, ~34 million years ago. A role for tectonically opening Southern Ocean gateways, initiating ...
  • A general framework of design flood estimation for cascade reservoirs in operation period 
    Xiong, Feng; Guo, Shenglian; Liu, Pan; Xu, Chong-Yu; Zhong, Yixuan; Yin, Jiabo; He, Shaokun (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2019)
    The hydrological regimes of downstream reservoirs have been significantly altered due to the operation and regulation of upstream cascade reservoirs. The original design flood quantiles, namely “design flood in construction ...
  • General overview: European Integrated project on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) - integrating aerosol research from nano to global scales 
    Kulmala, Markku; Asmi, Ari; Lappalainen, H. K.; Baltensperger, Urs; Brenguier, Jean-Louis; Facchini, Cristina; Hansson, H.-C.; Hov, Øystein; O'Dowd, Colin; Pöschl, U.; Wiedensohler, A.; Boers, Reinout; Boucher, Olivier; de Leeuw, G.; Denier van der Gon, H.A.C.; Feichter, Johann; Krejci, R.; Laj, P.; Lihavainen, H.; Lohmann, Ulrike; McFiggans, Gordon; Mentel, Thomas; Pilinis, C.; Riipinen, Ilona; Schulz, Michael; Stohl, Andreas; Swietlicki, Erik; Vignati, Elisabetta; Alves, C.; Amann, M.; Ammann, M.; Arabas, Sylvester; Artaxo, P.; Baars, H.; Beddows, D.C.S.; Bergström, R.; Beukes, J. P.; Bilde, Merete; Burkhart, John Faulkner; Canonaco, F.; Clegg, S. L.; Coe, H.; Crumeyrolle, S.; D'Anna, Barbara; Decesari, S.; Gilardoni, S.; Fischer, M.; Fjæraa, Ann-Mari; Fountoukis, C.; George, C.; Gomes, L.; Halloran, P.; Hamburger, T.; Harrison, R. M.; Herrmann, H.; Hoffmann, T.; Hoose, Corinna; Hu, M.; Hyvärinen, A.; Hõrrak, U.; Iinuma, Y.; Iversen, Trond; Josipovic, M.; Kanakidou, Maria; Kiendler-Scharr, A.; Kirkevåg, Alf; Kiss, G.; Klimont, Z.; Kolmonen, P.; Komppula, M.; Kristjansson, Jon Egill; Laakso, L.; Laaksonen, A.; Labonnote, L.; Lanz, V. A.; Lehtinen, K. E. J.; Rizzo, L. V.; Makkonen, R.; Manninen, H. E.; McMeeking, G.; Merikanto, J.; Minikin, A.; Mirme, S.; Morgan, W. T.; Nemitz, E.; O'Donnell, D.; Panwar, T. S.; Pawlowska, H.; Petzold, A.; Pienaar, J. J.; Pio, C.; Plass-Duelmer, C.; Prévôt, A. S. H.; Pryor, S.; Reddington, C. L.; Roberts, G.; Rosenfeld, Daniel; Schwarz, J.; Seland, Øyvind; Sellegri, K.; Shen, X. J.; Shiraiwa, M.; Siebert, H.; Sierau, Berko; Simpson, David; Sun, J. Y.; Topping, D.; Tunved, Peter; Vaattovaara, P.; Vakkari, V.; Veefkind, J. P.; Visschedijk, A.; Vuollekoski, H.; Vuolo, R.; Wehner, B.; Wildt, J.; Woodward, S.; Worsnop, D. R.; van Zadelhoff, G.-J.; Zardini, A. A.; Zhang, K.; van Zyl, P. G.; Kerminen, V.-M.; Carslaw, K. S.; Pandis, S. N. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2011)
    In this paper we describe and summarize the main achievements of the European Aerosol Cloud Climate and Air Quality Interactions project (EUCAARI). EUCAARI started on 1 January 2007 and ended on 31 December 2010 leaving a ...
  • Generation and comparison of digital elevation models for two regions in the northern Iceland 
    Petersen, Troels (Master thesis / Hovedoppgave, 2007)
    I oppgaven sammenliknes egenskapene til digitale høydemodeller generert med henholdsvis TIN-algoritmen(Triangulated Irregular Network) samt Topogrid-interpolasjon(Splines-basert algoritme). Til dette formål benyttes digitale ...
  • Generering av digital høydemodell fra ASTER opptak : kvalitet og begrensninger 
    Eggan, Oskar (Master thesis / Hovedoppgave, 2005)
  • 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: ...
  • Genesis of a CO2-rich and H2O-depleted atmosphere from Earth’s early global magma ocean 
    Solomatova, Natalia V.; Caracas, Razvan (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Under a thick atmosphere, carbon is rapidly vaporized from the magma ocean, while hydrogen remains dissolved in the silicate melt.
  • A geochemical assessment of petroleum from underground oil storage caverns in relation to petroleum from natural reservoirs offshore Norway 
    Østensen, Marie (Master thesis / Masteroppgave, 2005)
    The aim of this study is to compare oils from known biodegraded fields offshore Norway to waxes and oils from an artificial cavern storage facility, to determine if the oil degradation processes observed in natural reservoirs ...
  • Geochemical Constraints Provided by the Freetown Layered Complex (Sierra Leone) on the Origin of High-Ti Tholeiitic CAMP Magmas 
    Callegaro, Sara; Marzoli, Andrea; Bertrand, Herve´; Blichert-Toft, Janne; Reisberg, Laurie; Cavazzini, Giancarlo; Jourdan, Fred; Davies, Joshua H.F.L.; Parisio, Laura; Bouchet, Romain; Paul, Andre; Schaltegger, Urs; Chiaradia, Massimo (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    The Freetown Layered Complex (FLC) is a massive mafic layered intrusion cropping out along the coast of Sierra Leone. The present combined geochemical and geochronological (40Ar/39Ar on plagioclase: 201·7 ± 0·7 and 202·3 ...
  • Geochemistry and geochronology of mafic rocks from the Spanish Central System: constraints on the mantle evolution beneath central Spain 
    Orejana, David; Villaseca, C.; Kristoffersen, Magnus (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The Spanish Central System (SCS) contains several suites of Palaeozoic mafic igneous intrusions with contrasting geochemical affinity: Ordovician tholeiitic metabasites, Variscan calc-alkaline gabbros (Gb1) and microdiorites ...
  • The geochemistry and origin of the hydrothermal water erupted at Lusi, Indonesia 
    Mazzini, Adriano; Scholz, Florian; Svensen, Henrik; Hensen, Christian; Hadi, Soffian (Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2017)
    The spectacular Lusi mud-eruption started in northeast Java the 29th of May 2006. Despite extensive research, the origin of the erupted water remains elusive and poorly constrained. Here we present a comprehensive study ...
  • Geochemistry of deep Tunguska Basin sills, Siberian Traps: correlations and potential implications for the end-Permian environmental crisis. 
    Callegaro, Sara; Svensen, Henrik Hovland; Neumann, Else Ragnhild; Planke, Sverre; Jerram, Dougal Alexander; Polozov, Alexander; Deegan, Frances M. (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Abstract A vast portion of the plumbing system of the Siberian Traps Large Igneous Province (STLIP) is emplaced in the Tunguska Basin, where borehole data reveal ubiquitous and abundant sills with great lateral extension. ...
  • Geochronology of hydrothermal processes leading to the formation of the au-U mineralization at the rompas prospect, perapohja belt, northern Finland: Application of paired U-Pb dating of uraninite and re-Os dating of molybdenite to the identification of multiple hydrothermal events in a metamorphic terrane 
    Molnar, Ferenc; O'Brien, Hugh; Stein, Holly J.; Cook, Nick D J (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)
    The Peräpohja belt comprises a greenschist to amphibolite facies; multiply-folded supracrustal sequence of quartzites; mafic volcanics; carbonate rocks; black shales; mica schists and greywackes deposited from ca. 2.44 Ga ...
  • Geodetic mass balance of Abramov Glacier from 1975 to 2015 
    Denzinger, Florian; Machguth, Horst; Barandun, Martina; Berthier, Etienne; Girod, Luc; Kronenberg, Marlene; Usubaliev, Ryskul; Hoelzle, Martin (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    Abstract Multi-decadal mass loss estimates are available for few glaciers of Central Asia. On Abramov Glacier (Pamir-Alay, Kyrgyzstan), comprehensive long-term glaciological measurements have been carried out from 1968 to ...
  • Geodetic Mass Balance of Svalbard glaciers : 1936 - 2004 
    Nuth, Christopher (Master thesis / Masteroppgave, 2007)
    Glaciers and ice masses are very important components of the earth system both in terms of global water storage and as climate indicators. The amount of water tied up in glaciers and ice caps is equivalent to about 69 ...
  • Geodynamic diagnostics, scientific visualisation and StagLab 3.0 
    Crameri, Fabio (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)
    Today's geodynamic models can, often do and sometimes have to become very complex. Their underlying, increasingly elaborate numerical codes produce a growing amount of raw data. Post-processing such data is therefore ...
  • A geodynamic model of plumes from the margins of Large Low Shear Velocity Provinces 
    Steinberger, Bernard; Torsvik, Trond Helge (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2012)
    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 ...