• Transient Increase in Arctic Deep-Water Formation and Ocean Circulation under Sea Ice Retreat 

  Bretones, Anais Magali; Nisancioglu, Kerim Hestnes; Jensen, Mari Fjalstad; Brakstad, Ailin; Yang, Shuting (Journal article; Peer reviewed, 2021)

  While a rapid sea ice retreat in the Arctic has become ubiquitous, the potential weakening of the Atlantic meridional overturning circulation (AMOC) in response to global warming is still under debate. As deep mixing occurs ...

• Deciphering the metamorphic framework of ophiolite alteration and devolatilization at Linnajarvi, N-Norway 

  Arstein, Halfdan (Master thesis, 2021-12-01)

  Kvitfjell ultramafic body is one of around 20 ultramafic bodies found in the Linnajavri area of Northern Norway. These ultramafic fragments are situated within the Köli Nappe of the Upper Allochthon in the Caledonian ...

• Impacts of seismic resolution on fault interpretation: Insights from seismic modelling 

  Faleide, Thea Sveva; Braathen, Alvar; Lecomte, Isabelle Christine; Mulrooney, Mark Joseph; Midtkandal, Ivar; Bugge, Aina J.; Planke, Sverre (Journal article; Peer reviewed, 2021)

  Seismic mapping of subsurface faults is hampered by factors such as seismic resolution, velocity control for depth conversion and human bias. Here, we explore the challenges and pitfalls related to interpreting normal ...

• Point-spread function convolution to simulate prestack depth migrated images: A validation study 

  Jensen, Kristian; Lecomte, Isabelle Christine; Gelius, Leiv-J.; Kaschwich, Tina (Journal article; Peer reviewed, 2021)

  Seismic migration commonly yields an incomplete reconstruction of the Earth model due to restricted survey aperture, band-limited frequency content and propagation effects. This affects both illumination and resolution of ...

• Transport of mafic magma through the crust and sedimentary basins: Jameson Land, East Greenland 

  Eide, Christian Haug; Schofield, Nick; Howell, John Anthony; Jerram, Dougal Alexander (Journal article; Peer reviewed, 2021)

  Igneous sheet-complexes transport magma through the crust, but most studies have focused on single segments of the magma transport system or have low resolution. In the Jameson Land Basin in East Greenland, seismic reflection ...

• Melt volume at Atlantic volcanic rifted margins controlled by depth-dependent extension and mantle temperature 

  Lu, Gang; Huismans, Ritske Sipke (Journal article; Peer reviewed, 2021)

  Breakup volcanism along rifted passive margins is highly variable in time and space. The factors controlling magmatic activity during continental rifting and breakup are not resolved and controversial. Here we use numerical ...

• Syn-rift sediment gravity flow deposition on a Late Jurassic fault-terraced slope, northern North Sea 

  Tillmans, Fabian; Gawthorpe, Robert Leslie; Jackson, Christopher AL; Rotevatn, Atle (Journal article; Peer reviewed, 2021)

  Structurally controlled bathymetry in rifts has a significant influence on sediment routing pathways and depositional architecture of sediment gravity flow deposits. In contrast to rift segments characterized by crustal-scale ...

• Assessing first-order BQART estimates for ancient source-to- sink mass budget calculations 

  Nyberg, Björn Johan Emil Burr; Helland-Hansen, William Shedd; Gawthorpe, Robert Leslie; Tillmans, Fabian; Sandbakken, Pål (Journal article; Peer reviewed, 2021)

  Constraining the timing and volume of sediment dispersal in an ancient sedimentary system is vital to understand a basin's infill history. One preferred method for a first-order approximation of ancient sediment load ...

• Influence of Zones of Pre-Existing Crustal Weakness on Strain Localization and Partitioning During Rifting: Insights From Analog Modeling Using High-Resolution 3D Digital Image Correlation 

  Osagiede, Edoseghe E.; Rosenau, Matthias; Rotevatn, Atle; Gawthorpe, Rob; Jackson, Christopher A-L; Rudolf, Michael (Journal article; Peer reviewed, 2021)

  Pre-existing crustal structures are known to influence rifting, but the factors controlling their influence remain poorly understood. We present results of digital image correlation that allows for the surface strain ...

• Seismic modelling and deconvolution of prestack depth migrated images through ray-based Point-Spread Functions 

  Jensen, Kristian (Doctoral thesis, 2021-12-15)

  Seismic modelling involves simulating the propagation of waves through an Earth model to retrieve information about the subsurface. If an a priori Earth model is known, seismic modelling allows geoscientists to assess how ...

• Semi‐automatic Ice Rafted Debris quantification with Computed Tomography 

  Cederstrøm, Jan Magne; Bilt, Willem Godert Maria van der; Støren, Eivind Wilhelm Nagel; Rutledal, Sunniva (Journal article; Peer reviewed, 2021)

  Sedimentary ice-rafted debris (IRD) provides critical information about the climate sensitivity and dynamics of ice sheets. In recent decades, high-resolution investigations have revelated ice rafting events in response ...

• Deep-ocean circulation in the North Atlantic during the Plio-Pleistocene intensification of Northern Hemisphere Glaciation (~2.65–2.4 Ma) 

  Jacob, Kim A.; Pross, Jörg; Link, Jasmin M.; Blaser, Patrick; Braaten, Anna Hauge; Friedrich, Oliver (Journal article; Peer reviewed, 2021)

  Through transporting heat around the world and thereby regulating global climate, ocean circulation is an integral part of Earth's climate system that likely changed substantially on glacial-interglacial timescales in the ...

• Linking sediment supply variations and tectonic evolution in deep time, source-to-sink systems—The Triassic Greater Barents Sea Basin 

  Gilmullina, Albina; Klausen, Tore Grane; Doré, Anthony George; Rossi, Valentina Marzia; Suslova, Anna A.; Eide, Christian Haug (Journal article; Peer reviewed, 2021)

  Triassic strata in the Greater Barents Sea Basin are important records of geodynamic activity in the surrounding catchments and sediment transport in the Arctic basins. This study is the first attempt to investigate the ...

• The formation of the ophiolitic terrane of SW Norway - relationships between immature island arc volcanic sequences and trondhjemitic complexes on Bømlo 

  Saltvedt, Simen (Master thesis, 2021-10-01)

  Single zircon U/Pb dating, geochemistry, and field descriptions from trondhjemitic and tonalitic intrusions, intruding the Lykling Ophiolite Complex, provide new insights into the origin and evolution of the Early Ordovician ...

• Higher-order Hamilton–Jacobi perturbation theory for anisotropic heterogeneous media: dynamic ray tracing in ray-centred coordinates 

  Iversen, Einar; Ursin, Bjørn; Saksala, Teemu; Ilmavirta, Joonas; V. de Hoop, Maarten (Journal article; Peer reviewed, 2021)

  Dynamic ray tracing is a robust and efficient method for computation of amplitude and phase attributes of the high-frequency Green’s function. A formulation of dynamic ray tracing in Cartesian coordinates was recently ...

• Late Quaternary dynamics of Arctic biota from ancient environmental genomics 

  Wang, Yucheng; Pedersen, Mikkel W.; Alsos, Inger Greve; De Sanctis, Bianca; Racimo, Fernando; Prohaska, Ana; Coissac, Eric; Owens, Hannah L.; Merkel, Marie Føreid; Fernandez-Guerra, Antonio; Rouillard, Alexandra; Lammers, Youri; Alberti, Adriana; Denoeud, France; Money, Daniel; Ruter, Anthony H.; McColl, Hugh; Larsen, Nicolaj K.; Cherezova, Anna A.; Edwards, Mary E.; Fedorov, Grigory B.; Haile, James; Orlando, Ludovic; Vinner, Lasse; Korneliussen, Thorfinn S.; Beilman, David W.; Bjørk, Anders A.; Cao, Jialu; Dockter, Christoph; Esdale, Julie; Gusarova, Galina; Kjeldsen, Kristian K.; Mangerud, Jan; Rasic, Jeffrey T.; Skadhauge, Birgitte; Svendsen, John Inge; Tikhonov, Alexei N.; Wincker, Patrick; Xing, Yingchun; Zhang, Yubin; Froese, Duane G.; Rahbek, Carsten; Nogues, David B; Holden, Philip B.; Edwards, Neil R.; Durbin, Richard; Meltzer, David J.; Kjær, Kurt H.; Moller, Per; Willerslev, Eske (Journal article; Peer reviewed, 2021)

  During the last glacial–interglacial cycle, Arctic biotas experienced substantial climatic changes, yet the nature, extent and rate of their responses are not fully understood1,2,3,4,5,6,7,8. Here we report a large-scale ...

• Microstructure and fluid flow in the vicinity of basin bounding faults in rifts – The Dombjerg Fault, NE Greenland rift system 

  Salomon, Eric; Rotevatn, Atle; Kristensen, Thomas Berg; Grundvåg, Sten-Andreas; Henstra, Gijs Allard (Journal article; Peer reviewed, 2021)

  Faults commonly form loci for high fluid flux in sedimentary basins, where fluids, rocks and deformation processes frequently interact. Here, we elucidate the interaction of fluid flow, diagenesis and deformation near ...

• The Storfjorden, Svalbard, earthquake sequence 2008-2020: Transtensional tectonics in an arctic intraplate region 

  Ottemöller, Lars; Kim, Won-Young; Waldhauser, Felix; Tjåland, Norunn; Dallmann, Winfried (Journal article; Peer reviewed, 2021)

  An earthquake sequence in the Storfjorden offshore area southwest of Spitsbergen in the Svalbard archipelago initiated with a 21 February 2008 magnitude Mw 6.1 event. This area had previously not produced any significant ...

• Homotopy scattering series for seismic forward modelling with variable density and velocity 

  Xiang, Kui; Eikrem, Kjersti Solberg; Jakobsen, Morten; Nævdal, Geir (Journal article; Peer reviewed, 2021)

  We have derived a convergent scattering series solution for the frequency-domain wave equation in acoustic media with variable density and velocity. The convergent scattering series solution is based on the homotopy analysis ...

• Probabilistic Tsunami Hazard and Risk Analysis: A Review of Research Gaps 

  Behrens, Jörn; Løvholt, Finn; Jalayer, Fatemeh; Lorito, Stefano; Salgado-Gálvez, Mario A.; Sørensen, Mathilde Bøttger; Abadie, Stephane; Aguirre-Ayerbe, Ignacio; Aniel-Quiroga, Iñigo; Babeyko, Andrey; Baiguera, Marco; Basili, Roberto; Belliazzi, Stefano; Grezio, Anita; Johnson, Kendra; Murphy, Shane; Paris, Raphaël; Rafliana, Irina; De Risi, Raffaele; Rossetto, Tiziana; Selva, Jacopo; Taroni, Matteo; Del Zoppo, Marta; Armigliato, Alberto; Bureš, Vladimír; Cech, Pavel; Cecioni, Claudia; Christodoulides, Paul; Davies, Gareth; Dias, Frédéric; Bayraktar, Hafize Başak; González, Mauricio; Gritsevich, Maria; Guillas, Serge; Harbitz, Carl Bonnevie; Kânoǧlu, Utku; Macías, Jorge; Papadopoulos, Gerassimos A.; Polet, Jascha; Romano, Fabrizio; Salamon, Amos; Scala, Antonio; Stepinac, Mislav; Tappin, David R.; Thio, Hong Kie; Tonini, Roberto; Triantafyllou, Ioanna; Ulrich, Thomas; Varini, Elisa; Volpe, Manuela; Vyhmeister, Eduardo (Journal article; Peer reviewed, 2021)

  Tsunamis are unpredictable and infrequent but potentially large impact natural disasters. To prepare, mitigate and prevent losses from tsunamis, probabilistic hazard and risk analysis methods have been developed and have ...

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