Now showing items 41-60 of 447

    • Climate variability in the subarctic area for the last 2 millennia 

      Nicolle, Marie; Debret, Maxime; Massei, Nicolas; Colin, Christophe; de Vernal, Anne; Divine, Dmitry V; Werner, Johannes; Hormes, Anne; Korhola, Atte; Linderholm, Hans W. (Peer reviewed; Journal article, 2018-01-25)
      To put recent climate change in perspective, it is necessary to extend the instrumental climate records with proxy data from paleoclimate archives. Arctic climate variability for the last 2 millennia has been investigated ...
    • Climate, glacial and vegetation history of the Polar Ural Mountains since early MIS 2 inferred from a 54-m-long sediment core from Lake Bolshoye Shuchye 

      Lenz, Marlene M.; Andreev, Andrei; Nazarova, Larisa; Syrykh, Liudmila S.; Scheidt, Stephanie; Haflidason, Haflidi; Meyer, Hanno; Brill, Dominik; Wagner, Bernd; Gromig, Raphael; Lenz, Matthias; Rolf, Christian; Kuhn, Gerhard; Fedorov, Grigoriy; Svendsen, John Inge; Melles, Martin (Journal article; Peer reviewed, 2021)
      Because continuous and high-resolution records are scarce in the polar Urals, a multiproxy study was carried out on a 54 m long sediment succession (Co1321) from Lake Bolshoye Shchuchye. The sedimentological, geochemical, ...
    • A climatic trigger for the giant Troll pockmark field in the northern North Sea 

      Mazzini, Adriano; Svensen, Henrik; Forsberg, Carl Fredrik; Linge, Henriette; Lauritzen, Stein-Erik; Haflidason, Haflidi; Hammer, Øyvind; Planke, Sverre; Tjelta, Tor-Inge (Peer reviewed; Journal article, 2017-04)
      Pockmarks are seafloor craters usually formed during methane release on continental margins. However, the mechanisms behind their formation and dynamics remain elusive. Here we report detailed investigations on one of the ...
    • Clinoform systems: Review and dynamic classification scheme for shorelines, subaqueous deltas, shelf edges and continental margins 

      Patruno, Strefano; Helland-Hansen, William (Peer reviewed; Journal article, 2018-10)
      Clinoforms are inclined and normally basinward-dipping horizons developed over a range of spatial and temporal scales in both siliciclastic and carbonatic systems. The study of clinoform successions underpins sequence ...
    • Clitellate worms (Annelida) in late-glacial and Holocene sedimentary DNA records from the Polar Urals and northern Norway 

      Lammers, Youri; Clarke, Charlotte; Erséus, Christer; Brown, Antony Gavin; Edwards, Mary Elizabeth; Gielly, Ludovic; Haflidason, Haflidi; Mangerud, Jan; Rota, E; Svendsen, John-Inge; Alsos, Inger Greve (Peer reviewed; Journal article, 2018-11-26)
      While there are extensive macro‐ and microfossil records of a range of plants and animals from the Quaternary, earthworms and their close relatives amongst annelids are not preserved as fossils and therefore the knowledge ...
    • 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 ...
    • Cold spells in the Nordic Seas during the early Eocene Greenhouse 

      Vickers, Madeleine L.; Lengger, Sabine K.; Bernasconi, Stefano M.; Thibault, Nicolas; Schultz, Bo; Bremer, Alvaro Fernandez; Ullmann, Clemens V.; McCormack, Paul; Bjerrum, Christian J.; Rasmussen, Jan Audun; Hougård, Iben Winther; Korte, Christoph (Journal article; Peer reviewed, 2020)
      The early Eocene (c. 56 - 48 million years ago) experienced some of the highest global temperatures in Earth’s history since the Mesozoic, with no polar ice. Reports of contradictory ice-rafted erratics and cold water ...
    • Combination of Aerial, Satellite, and UAV Photogrammetry for Quantifying Rock Glacier Kinematics in the Dry Andes of Chile (30°S) Since the 1950s 

      Vivero, Sebastián; Bodin, Xavier; David, Farías; Shelley, MacDonell; Nicole, Schaffer; Robson, Benjamin Aubrey; Lambiel, Christophe (Journal article; Peer reviewed, 2021)
      The diachronic analysis of aerial and satellite imagery, uncrewed aerial vehicle (UAV) and in situ surveys obtained between 1956 and 2019 are employed to analyse landform surface kinematics for the Tapado site located in ...
    • A community-based geological reconstruction of Antarctic Ice Sheet deglaciation since the Last Glacial Maximum 

      Bentley, Michael J.; Ocofaigh, Colm Ó.; Anderson, John B.; Conway, Howard; Davies, Bethan; Graham, Alastair G.C.; Hillenbrand, Claus-Dieter; Hodgson, Dominic A.; Jamieson, Stewart S.R.; Larter, Robert D.; Mackintosh, Andrew; Smith, James A.; Verleyen, Elie; Ackert, Robert P.; Bart, Philip J.; Berg, Sonja; Brunstein, Daniel; Canals, Miquel; Colhoun, Eric A.; Crosta, Xavier; Dickens, William A.; Domack, Eugene; Dowdeswell, Julian A.; Dunbar, Robert; Ehrmann, Werner; Evans, Jeffrey; Favier, Vincent; Fink, David; Fogwill, Christopher J.; Glasser, Neil F.; Gohl, Karsten; Golledge, Nicholas R.; Goodwin, Ian; Gore, Damian B.; Greenwood, Sarah L.; Hall, Brenda L.; Hall, Kevin; Hedding, David W.; Hein, Andrew S.; Hocking, Emma P.; Jakobsson, Martin; Johnson, Joanne S.; Jomelli, Vincent; Jones, R. Selwyn; Klages, Johann P.; Kristoffersen, Yngve; Kuhn, Gerhard; Leventer, Amy; Licht, Kathy; Lilly, Katherine; Lindow, Julia; Livingstone, Stephen J.; Massé, Guillaume; McGlone, Matt S.; Mckay, Robert M.; Melles, Martin; Miura, Hideki; Mulvaney, Robert; Nel, Werner; Nitsche, Frank O.; O'Brien, Philip E.; Post, Alexandra L.; Roberts, Stephen J.; Saunders, Krystyna M.; Selkirk, Patricia M.; Simms, Alexander R.; Spiegel, Cornelia; Stolldorf, Travis D.; Sugden, David E.; van der Putten, Nathalie; van Ommen, Tas; Verfaillie, Deborah; Vyverman, Wim; Wagner, Bernd; White, Duanne A.; Witus, Alexandra E.; Zwartz, Dan (Peer reviewed; Journal article, 2014-09-15)
      A robust understanding of Antarctic Ice Sheet deglacial history since the Last Glacial Maximum is important in order to constrain ice sheet and glacial-isostatic adjustment models, and to explore the forcing mechanisms ...
    • Comparison between Air Temperature and Land Surface Temperature for the City of São Paulo, Brazil 

      Lima Do Nascimento, Augusto Cezar; Galvani, Emerson; Gobo, João Paulo Assis; Wollmann, Cássio Arthur (Journal article; Peer reviewed, 2022)
      This study aims to identify the relationship between changes in temperature regarding urbanization processes and seasonality in the city of São Paulo, located in the Tropic of Capricorn. The land surface temperature (LST) ...
    • A complex point-source solution of the acoustic eikonal equation for Gaussian beams in transversely isotropic media 

      Huang, Xingguo; Sun, Hui; Sun, Zhangqing; da Silva, Nuno (Peer reviewed; Journal article, 2020-03-11)
      The complex traveltime solutions of the complex eikonal equation are the basis of inhomogeneous plane-wave seismic imaging methods, such as Gaussian beam migration and tomography. We present the analytic approximations for ...
    • Complex strain partitioning and heterogeneous extension rates during early rifting in the East Shetland Basin, northern North Sea 

      Claringbould, Johan S; Bell, Rebecca E.; Jackson, Christopher A.L.; Gawthorpe, Robert; Odinsen, Tore (Journal article; Peer reviewed, 2020)
      The early stages of continental rifting are accommodated by the growth of upper crustal normal fault systems that are distributed relatively evenly across the rift width. Numerous fault systems define fault arrays, the ...
    • Compositions of dissolved organic matter in the ice-covered waters above the Aurora hydrothermal vent system, Gakkel Ridge, Arctic Ocean 

      Sert, Muhammed Fatih; Niemann, Helge; Reeves, Eoghan; Granskog, Mats A.; Hand, Kevin P.; Kekäläinen, Timo; Jänis, Janne; Rossel, Pamela; Ferré, Benedicte; Silyakova, Anna; Gründger, Friederike (Journal article; Peer reviewed, 2022)
      Hydrothermal vents modify and displace subsurface dissolved organic matter (DOM) into the ocean. Once in the ocean, this DOM is transported together with elements, particles, dissolved gases and biomass along with the ...
    • A conceptual geological model for offshore wind sites in former ice stream settings: The Utsira Nord site, North Sea 

      Petrie, Hannah Elizabeth; Eide, Christian Haug; Haflidason, Haflidi; Watton, Timothy (Journal article; Peer reviewed, 2022)
      Conceptual geological models of the shallow subsurface that integrate geological and geotechnical information are important for more strategic data acquisition and engineering at offshore wind sites. Utsira Nord is an ...
    • Consistent fluctuations in intermediate water temperature off the coast of Greenland and Norway during Dansgaard-Oeschger events 

      Sessford, Evangeline; Jensen, Mari Fjalstad; Tisserand, Amandine Aline; Muschitiello, Francesco; Dokken, Trond Martin; Nisancioglu, Kerim Hestnes; Jansen, Eystein (Peer reviewed; Journal article, 2019-11-01)
      Rapid warmings epitomize the Dansgaard-Oeschger events that are recorded in Greenland ice cores and imprinted in ocean sediment cores. While the abrupt climate changes appear connected to perturbations in sea ice and ocean ...
    • 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 ...
    • Contractional deformation of porous sandstone: Insights from the Aztec Sandstone, SE Nevada, USA 

      Fossen, Haakon; Zuluaga, Luisa F.; Ballas, Gregory; Soliva, Roger; Rotevatn, Atle (Peer reviewed; Journal article, 2015-05)
      Contractional deformation of highly porous sandstones is poorly explored, as compared to extensional deformation of such sedimentary rocks. In this work we explore the highly porous Aztec Sandstone in the footwall to the ...
    • Control of increased sedimentation on orogenic fold-and-thrust belt structure-insights into the evolution of the Western Alps 

      Erdös, Zoltan; Huismans, Ritske; van der Beek, Peter (Peer reviewed; Journal article, 2019-03-13)
      We use two-dimensional thermomechanical models to investigate the potential role of rapid filling of foreland basins in the development of orogenic foreland fold-and-thrust belts. We focus on the extensively studied example ...
    • Coupled Mg/Ca and Clumped Isotope Measurements Indicate Lack of Substantial Mixed Layer Cooling in the Western Pacific Warm Pool During the Last ∼5 Million Years 

      Meinicke, Niklas; Reimi, Maja A.; Ravelo, A.C.; Meckler, Anna Nele (Journal article; Peer reviewed, 2021)
      The Indo-Pacific Warm Pool (IPWP) plays a crucial role in influencing climate dynamics both in the tropics and globally. Yet, there is an ongoing controversy concerning the evolution of surface temperatures in the IPWP ...
    • 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 ...