Now showing items 601-620 of 5378

    • Modelling the Earth System - From Tipping Elements to Reconstructions 

      Bochow, Nils (Doctoral thesis; Doktorgradsavhandling, 2024-06-17)
      Climate change can trigger climate tipping points, which are among the major threats to human society. Tipping points are thresholds beyond which a system undergoes abrupt, often irreversible, changes even if the external forcing is brought to a halt. Several large-scale elements in the Earth system are considered tipping elements with global consequences once critical thresholds are crossed and ...
    • Seasonal precipitation variability on Svalbard inferred from Holocene sedimentary leaf wax δ2H 

      Kjellman, Sofia Elisabeth; Thomas, Elizabeth K.; Farnsworth, Wesley R.; Cowling, Owen C.; Allaart, Lis; Brynjólfsson, Skafti; Schomacker, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-26)
      Svalbard spans large climate gradients, associated with atmospheric circulation patterns and variations in ocean heat content and sea ice cover. Future precipitation increases are projected to peak in the northeast and to mainly occur in winter, but uncertainties underscore the need for reconstructions of long-term spatial and temporal variations in precipitation amounts and seasonality. We use lipid ...
    • Analysis of peak locomotor demands in women’s football–the influence of different epoch lengths 

      Matias Do Vale Baptista, Ivan Andre; Winther, Andreas Kjæreng; Johansen, Dag; Pettersen, Svein Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-23)
      The quantification of peak locomotor demands has been gathering researchers’ attention in the past years. Regardless of the different methodological approaches used, the most selected epochs are between 1-, 3-, 5- and 15-minutes time windows. However, the selection of these time frames is frequently arbitrary. The aim of this study was to analyse the peak locomotor demands of short time epochs (15, ...
    • Morphology and structural, stratigraphic setting of volcanic deposits at Skoll High on the Vøring Plateau 

      Andersen, Rasmus (Mastergradsoppgave; Master thesis, 2024-05-15)
      The voluminous igneous complexes that are present in the sedimentary basins of the volcanic rifted Vøring Margin have recently gained attention due to their promising potential for carbon sequestration. Although there have been major improvements in the field of intra- and subbasalt imaging and subbasalt sequences over the past decade, the emplacement mechanism, stratigraphical setting, structural ...
    • Impact ionization double peaks analyzed in high temporal resolution on Solar Orbiter 

      Kociscak, Samuel; Kvammen, Andreas; Mann, Ingrid Brigitte; Meyer-Vernet, Nicole; Pisa, David; Souček, Jan; Theodorsen, Audun; Vaverka, Jakub; Zaslavsky, Arnaud (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-29)
      Solar Orbiter is equipped with electrical antennas performing fast measurements of the surrounding electric field. The antennas register high-velocity dust impacts through the electrical signatures of impact ionization. Although the basic principle of the detection has been known for decades, the understanding of the underlying process is not complete, due to the unique mechanical and electrical ...
    • Early aerial expedition photos reveal 85 years of glacier growth and stability in East Antarctica 

      Dømgaard, Mads; Schomacker, Anders; Isaksson, Elisabeth; Millan, Romain; Huiban, Flora; Dehecq, Amaury; Fleischer, Amanda; Moholdt, Geir; Andersen, Jonas K.; Bjørk, Anders A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-25)
      During the last few decades, several sectors in Antarctica have transitioned from glacial mass balance equilibrium to mass loss. In order to determine if recent trends exceed the scale of natural variability, long-term observations are vital. Here we explore the earliest, large-scale, aerial image archive of Antarctica to provide a unique record of 21 outlet glaciers along the coastline of East ...
    • The Ocean Senses Activity Book: Enriching Ocean Literacy through a multisensory approach 

      Panieri, Giuliana; Sancak Sert, Zeynep; Maric, Filip; Poto, Margherita Paola; Murray, Emily Margaret (Chapter; Bokkapittel, 2024-05-23)
      This chapter outlines the development of “The Ocean Senses Activity Book” integrating a multisensory approach to ocean education for pupils and the general public. Originating from an expedition in the Arctic Ocean, the project aimed to cultivate more effective cognitive approaches to ocean literacy education and communication. It bridged the gap between scientific exploration and public engagement, ...
    • The Agenda 2030 and the Imperative for Research and Education for the Climate and the Oceans 

      Panieri, Giuliana; Poto, Margherita Paola; Murray, Emily Margaret (Chapter; Bokkapittel, 2024-05-23)
      This chapter sets the scene and provides background information regarding the primary objective of the book: to contribute to the knowledge base for climate education and research, with a specific focus on the oceans and water. Within this framework, the chapter situates educational and research strategies that specifically focus on ocean literacy, developed and coordinated by the authors over the ...
    • Connecting with The Deep: Lifelong Learning (LLL) and Marine Sustainability 

      Johansen, Caroline; Williams, Rhianon; Xylouri, Ourania; Panieri, Giuliana (Chapter; Bokkapittel, 2024-05-23)
      This chapter frames marine sustainability within ongoing global and regional initiatives in lifelong learning and adult education. The authors of this chapter argue that to achieve the ambitious targets set out in the SDGs, our adult population must be able to recognise, engage with, and act upon economic, social, and environmental challenges. The authors of this chapter present the many barriers ...
    • Universally Accessible Marine Science and Ocean Literacy for All Citizens: The Thalassophile Project 

      Pandeva, Rada; Johansen, Caroline; Williams, Rhianon; Carotta, Carolina; Panieri, Giuliana (Chapter; Bokkapittel, 2024-05-23)
      The Thalassophile Project is dedicated to universal accessibility in marine science and ocean literacy, with a focus on the d/Deaf and visually impaired communities. By emphasising accessibility, and illustrating how theory is put into practice, the project brings together a network of cross-sector practitioners, combining marine research, education, and universal accessibility expertise. In this ...
    • Emotional and ecological literacy for a more sustainable society 

      Panieri, Giuliana; Poto, Margherita Paola; Murray, Emily Margaret (Book; Bok, 2024)
    • Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling 

      Ahn, Youngkyu; Joe, Young Jin; Jang, Kwangchul; Kim, Jung-Hyun; Son, Yeong Ju; Forwick, Matthias; Hong, Sungmin; Nam, Seung-Il (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-11)
      Grain-size end-member (EM) modelling is a robust statistical approach for identifying and quantifying dominant grain-size distributions. This approach provides a novel perspective for understanding the impact of interactions between depositional processes in complex sedimentary environments. This study examines grain-size distributions of six glacimarine sediment cores collected along an Nsingle ...
    • Sediment DNA metabarcoding and morphology provide complementary insight into macrofauna and meiobenthos response to environmental gradients in an Arctic glacial fjord 

      Mazurkiewicz, Mikołaj; Pawłowska, Joanna; Barrenechea Angeles, Inés; Grzelak, Katarzyna; Deja, Kajetan; Zaborska, Agata; Pawłowski, Jan; Włodarska-Kowalczuk, Maria (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-11)
      Arctic fjords ecosystems are highly dynamic, with organisms exposed to various natural stressors along with productivity clines driven by advection of water masses from shelves. The benthic response to these environmental clines has been extensively studied using traditional, morphology-based approaches mostly focusing on macroinvertebrates. In this study we analyse the effects of glacially mediated ...
    • Risk Assessment of a Mars Colony Utilizing a Mars-Svalbard Training Analog 

      Barger, Derrick (Master thesis; Mastergradsoppgave, 2024-05-04)
      As the space industry is rapidly privatized and countries once again have their eyes set on the moon and beyond, humanity is getting closer and closer to the days where a colony on Mars is a reality. During the preliminary planning phase of a mission to Mars, a large scale, top-down overview is essential. This report applies a risk and safety engineering approach to identify each of the core hazards, ...
    • Contribution of fluorescent primary biological aerosol particles to low-level Arctic cloud residuals 

      Pereira Freitas, Gabriel; Kopec, Ben; Adachi, Kouji; Krejci, Radovan; Heslin-Rees, Dominic; Yttri, Karl Espen; Hubbard, Alun Lloyd; Welker, Jeffrey M.; Zieger, Paul (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-13)
      Mixed-phase clouds (MPCs) are key players in the Arctic climate system due to their role in modulating solar and terrestrial radiation. Such radiative interactions rely, among other factors, on the ice content of MPCs, which is regulated by the availability of ice-nucleating particles (INPs). While it appears that INPs are associated with the presence of primary biological aerosol particles (PBAPs) ...
    • Lithium-ion battery digitalization: Combining physics-based models and machine learning 

      Amiri, Mahshid N.; Håkansson, Anne Eva Margareta; Burheim, Odne Stokke; Lamb, Jacob Joseph (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-21)
      Digitalization of lithium-ion batteries can significantly advance the performance improvement of lithium-ion batteries by enabling smarter controlling strategies during operation and reducing risk and expenses in the design and development phase. Accurate physics-based models play a crucial role in the digitalization of lithium-ion batteries by providing an in-depth understanding of the system. ...
    • Molecules and Morphotypes – Exploring benthic foraminiferal biodiversity in seep-influenced habitats 

      Holm, Villads Dyrved (Master thesis; Mastergradsoppgave, 2023-05-15)
      Beneath the seafloor, methane, a potent greenhouse gas, is trapped in ice-like structures, prone to destabilization and gas release in a warming climate. Gas releases through the seabed concentrated in seeps, creating unique ecosystems, hostile to some lifeforms but able to sustain others. Foraminifera have proved useful in biodiversity and ecosystem quality assessment due to their ubiquity in ...
    • Insights into glacial processes from micromorphology of silt-sized sediment 

      Lepp, Allison P.; Miller, Lauren E.; Anderson, John B.; O’Regan, Matt; Winsborrow, Monica Caroline Mackay; Smith, James A.; Hillenbrand, Claus-Dieter; Wellner, Julia S.; Prothro, Lindsay O.; Podolskiy, Evgeny A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-07)
      Silt-rich meltwater plume deposits (MPDs) analyzed from marine sediment cores have elucidated relationships that are clearly connected, yet difficult to constrain, between subglacial hydrology, ice-marginal landforms, and grounding-zone retreat patterns for several glacial catchments. Few attempts have been made to infer details of subglacial hydrology, such as flow regime, geometry of drainage ...
    • Acoustic evidence of hydrocarbon release associated with the Spitsbergen Transform Fault, north of the Molloy Ridge, Fram Strait 

      Chand, Shyam; Knies, Jochen Manfred; Geissler, Wolfram H.; Plaza Faverola, Andreia Aletia; Thorsnes, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-16)
      Hydrocarbon gases formed from biotic and abiotic processes are released through the seafloor at different locations around the world. They have been widely observed directly in video and photo data, and indirectly on echosounder data. Even though biotic gas generation is a very common process, abiotic gas generation is limited to regions where serpentinization of ultramafic rocks occur. Indications ...
    • Sedimentological and geochemical investigations of hydrothermally impacted sediments at the Aurora vent field, Fram Strait 

      Bjørnå, Eivind Urbye (Mastergradsoppgave; Master thesis, 2023-05-15)
      Hydrothermal vents are the result of the interaction between seawater and magma and occur at regular intervals along mid ocean ridges. The first visual confirmation of plumes was done in 1977. The detection of hydrothermal plumes has both provided indirect evidence for their existence and a resolution of the occurrences . In deep ocean with low sedimentation rates, hydrothermal plumites have the ...