Nye registreringer

  • Minimum 1D velocity model and local magnitude scale for Myanmar 

    Shiddiqi, Hasbi Ash; Tun, Pa Pa; Ottemöller, Lars (Journal article; Peer reviewed, 2019)
    Earthquake monitoring in Myanmar has improved in recent years because of an increased number of seismic stations. This provides a good quality dataset to derive a minimum 1D velocity model and local magnitude (⁠ML⁠) scale ...
  • Subglacial sediment distribution from constrained seismic inversion, using MuLTI software: examples from Midtdalsbreen, Norway 

    Killingbeck, Siobhan F; Booth, Adam D; Livermore, Philip W; West, Landis J; Reinardy, Benedict T.I.; Nesje, Atle (Journal article; Peer reviewed, 2019)
    Fast ice flow is associated with the deformation of subglacial sediment. Seismic shear velocities, Vs, increase with the rigidity of material and hence can be used to distinguish soft sediment from hard bedrock substrates. ...
  • Salt decollement and rift inheritance controls on crustal deformation in orogens 

    Grool, Arjan Ruben; Huismans, Ritske; Ford, Mary (Journal article; Peer reviewed, 2019-09)
    We investigate the factors that control the shortening distribution and its evolution through time in orogenic belts using numerical models. We present self‐consistent high‐resolution numerical models that simulate the ...
  • Seismic on floating ice: data acquisition versus flexural wave noise 

    Johansen, Tor Arne; Ruud, Bent Ole; Tømmerbakke, Ronny; Jensen, Kristian (Journal article; Peer reviewed, 2019)
    Geophysical surveying of the Arctic will become increasingly important in future prospecting and monitoring of the terrestrial and adjacent areas in this hemisphere. Seismic data acquired on floating ice are hampered with ...
  • European summer temperatures since Roman times 

    Luterbacher, Jürg; Werner, Johannes; Smerdon, Jason E.; Fernández-Donado, Laura; González-Rouco, Fidel J.; Barriopedro, David E.; Ljungqvist, Fredrik Carpentier; Büntgen, Ulf; Zorita, Eduardo Valera; Wagner, Sebastian; Esper, Jan; McCarroll, Danny; Toreti, Andrea; Frank, David C.; Jungclaus, Jojann H.; Barriendos, Mariano; Bertolin, Chiara; Bothe, Oliver; Brázdil, Rudolf; Camuffo, Dario; Dobrovolný, Petr; Gagen, Mary H.; Garcia-Bustamante, Elena; Ge, Q.; Guiot, Joël; Gómez-Navarro, Juan José; Hao, Z.; Hegerl, Gabi C.; Holmgren, Karin; Klimenko, Vladimir V.; Martin-Chivelet, Javier; Pfister, Christian; Roberts, Neil; Schindler, Anne; Schurer, Andrew P.; Solomina, Olga N.; Von Gunten, Lucien; Wahl, Eugene R.; Wanner, Heinz; Wetter, Oliver; Xoplaki, Elena; Yuan, Naiming; Zanchettin, Davide; Zhang, Huan; Zerefos, Christos S. (Journal article; Peer reviewed, 2016)
    The spatial context is critical when assessing present-day climate anomalies, attributing them to potential forcings and making statements regarding their frequency and severity in a long-term perspective. Recent international ...
  • Tephra horizons identified in the western North Atlantic and Nordic Seas during the Last Glacial Period: Extending the marine tephra framework 

    Rutledal, Sunniva; Berben, Sarah Miche Patricia; Dokken, Trond Martin; Bilt, Willem van der; Cederstrøm, Jan Magne; Jansen, Eystein (Journal article; Peer reviewed, 2020)
    Geochemically distinct volcanic ash (tephra) deposits are increasingly acknowledged as a key geochronological tool to synchronize independent paleoclimate archives. Recent advances in the detection of invisible (crypto) ...
  • A continuous tephrostratigraphic record from the Labrador Sea spanning the last 65 ka 

    Rutledal, Sunniva; Haflidason, Haflidi; Berben, Sarah Miche Patricia; Griem, Lisa; Jansen, Eystein (Journal article; Peer reviewed, 2020)
    Volcanic ash preserved in marine sediment sequences is key for independent synchronization of palaeoclimate records within and across different climate archives. Here we present a continuous tephrostratigraphic record from ...
  • Tephrochronology of the North Atlantic during the Last Glacial period – a paleoclimate synchronization tool 

    Rutledal, Sunniva (Doctoral thesis, 2021-04-09)
    During present time, the global climate is changing at a rapid pace. To understand the future consequences of these changes, studies of past abrupt climate change are essential. A natural analogue to the current climate ...
  • Warm Middle Miocene Indian Ocean Bottom Water Temperatures: Comparison of Clumped Isotope and Mg/Ca‐Based Estimates 

    Modestou, Sevasti Eleni; Leutert, Thomas Jan; Bremer, Alvaro Fernandez; Lear, Caroline H.; Meckler, Anna Nele (Journal article; Peer reviewed, 2020)
    The middle Miocene is an important analogue for potential future warm climates. However, few independent deep ocean temperature records exist, though these are important for climate model validation and estimates of changes ...
  • Clumped isotope thermometry in bivalve shells: a tool for reconstructing seasonal upwelling 

    Caldarescu, Diana Elena; Sadatzki, Henrik; Dahl, Carin Andersson; Schäfer, Priska; Fortunato, Helena; Meckler, Anna Nele (Journal article; Peer reviewed, 2021)
    Carbonate clumped isotope thermometry is a powerful tool for reconstructing paleotemperature and paleosalinity. Despite its broad application in biotic and abiotic materials, its use in paleoclimate studies has been limited ...
  • Coupled Southern Ocean cooling and Antarctic ice sheet expansion during the middle Miocene 

    Leutert, Thomas Jan; Auderset, Alexandra; Martínez-García, Alfredo; Modestou, Sevasti Eleni; Meckler, Anna Nele (Journal article; Peer reviewed, 2020)
    The middle Miocene climate transition (~14 million years ago) was characterized by a dramatic increase in the volume of the Antarctic ice sheet. The driving mechanism of this transition remains under discussion, with ...
  • Shear zone evolution during core complex exhumation – Implications for continental detachments 

    Wiest, Johannes; Fossen, Haakon; Jacobs, Joachim (Journal article; Peer reviewed, 2020)
    The formation of low-angle detachments involves exhumation of previously ductile material and fault zone weakening. To better understand this relationship, we studied a deeply eroded metamorphic core complex, which formed ...
  • Seismic expression of shear zones: Insights from 2-D point-spread-function based convolution modelling 

    Wrona, Thilo; Fossen, Haakon; Lecomte, Isabelle; Eide, Christian Haug; Gawthorpe, Rob (Journal article; Peer reviewed, 2020)
    Shear zones are common strain localization structures in the middle and lower crust and play a major role during orogeny, transcurrent movements and rifting alike. Our understanding of crustal deformation depends on our ...
  • Strain migration during multiphase extension, Stord Basin, northern North Sea rift 

    Fazlikhani, Hamed; Aagotnes, Synne; Refvem, Marte; Hamilton-Wright, James; Bell, Rebecca E.; Fossen, Haakon; Gawthorpe, Rob; Jackson, Christopher A.-L.; Rotevatn, Atle (Journal article; Peer reviewed, 2021)
    In regions experiencing multiple phases of extension, rift‐related strain can vary along and across the basin during and between each phase, and the location of maximum extension can differ between the rift phase. Despite ...
  • Drainage integration and sediment dispersal in active continental rifts: A numerical modelling study of the central Italian Apennines 

    Cowie, Patience; Duclaux, Guillaume; Gawthorpe, Rob; Huismans, Ritske; Pedersen, Vivi; Wedmore, Luke; Geurts, Anneleen H. (Journal article; Peer reviewed, 2018)
    Progressive integration of drainage networks during active crustal extension is observed in continental areas around the globe. This phenomenon is often explained in terms of headward erosion, controlled by the distance ...
  • Quantifying Dynamical Proxy Potential Through Shared Adjustment Physics in the North Atlantic 

    Loose, Nora; Heimbach, Patrick; Pillar, H.R.; Nisancioglu, Kerim Hestnes (Journal article; Peer reviewed, 2020)
    Oceanic quantities of interest (QoIs), for example, ocean heat content or transports, are often inaccessible to direct observation, due to the high cost of instrument deployment and logistical challenges. Therefore, ...
  • Exceptionally high heat flux needed to sustain the Northeast Greenland Ice Stream 

    Smith-Johnsen, Silje; de Fleurian, Basile; Schlegel, Nicole; Seroussi, Hélène; Nisancioglu, Kerim Hestnes (Journal article; Peer reviewed, 2020)
    The Northeast Greenland Ice Stream (NEGIS) currently drains more than 10 % of the Greenland Ice Sheet area and has recently undergone significant dynamic changes. It is therefore critical to accurately represent this feature ...
  • Present day Jakobshavn Isbræ close to the Holocene minimum extent 

    Kajanto, Karita Anneli; Seroussi, Hélène; de Fleurian, Basile; Nisancioglu, Kerim Hestnes (Journal article; Peer reviewed, 2020)
    Marine terminating glaciers evolve on millenial timescales in response to changes in oceanic and atmospheric conditions. However, the relative role of oceanic and atmospheric drivers remains uncertain. The evolution of ...
  • Ocean circulation changes off southern Greenland during the abrupt climate events of mid-to-late MIS3 

    Griem, Lisa (Doctoral thesis, 2021-03-18)
    Marine sediment cores from the North Atlantic and ice cores from the Greenland Ice Sheet serve as natural archives of past climate variability. Ice cores have revealed that during the last glacial period the climate comprises ...
  • Transient landscape and stratigraphic responses to drainage integration in the actively extending central Italian Apennines 

    Geurts, Anna Helena; Whittaker, Alexander C.; Gawthorpe, Robert; Cowie, Patience (Journal article; Peer reviewed, 2020)
    Drainage networks in continental rifts are generally reported as dynamic features that produce transitions between endorheic and exorheic conditions. While this is of major importance for landscape development, sediment ...

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