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Methanotroph activity and connectivity between two seep systems north off Svalbard
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-14)Understanding methane flux dynamics in Arctic cold seep systems and the influence of oceanic currents on microbial methane-oxidizing bacteria (MOB) is crucial for assessing their impact on Arctic methane emissions. Here, we investigate methane dynamics and associated microbial communities at two cold seep areas, Norskebanken and Hinlopen Trough, North of Svalbard. Methane concentrations and methane ... -
Snowdrift Analysis using FlowCapt FC4 and LiDAR Data at Fv. 53 Tyin-Årdal
(Mastergradsoppgave; Master thesis, 2024-05-15)The wind is essential in distribution of snow and the degree of avalanche danger. There are a lot of uncertainties regarding quantification of wind-transported snow, which is of importance for local avalanche warning and Remote Avalanche Control Systems (RACS) - which is conducted by Skred AS along Fv. 53 (County Road 53) Tyin-Årdal. A snowdrift sensor, FlowCapt 4 (FC4), is installed along this ... -
Characteristics and failure mechanisms of the Sieidi unstable rock slope
(Mastergradsoppgave; Master thesis, 2024-05-14)Seidi is an unstable rock slope at the western end of the Sørfjord in Tromsø municipality, Troms County, northern Norway. It displays clear signs of rock slope deformation: an offset at the crest, multiple scarps, talus and loose material and a bulging slope. The objective of this work is to interrogate the failure mechanics in order to determine the degree of control lithology and bedrock structure ... -
A distinctive rare earth element signature for pyrite oxidation and glacial weathering
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-15)The application of rare earth elements (REE) and neodymium (Nd) isotopes to authigenic Fe-(oxyhydr)oxide phases leached from marine sediments can be used for reconstructing past ocean circulation and chemical weathering patterns on nearby continental landmasses. To explore the behaviour of REE during chemical weathering in glacial environments, we analyzed the authigenic fraction of glacimarine ... -
Dating and analysis of the Hinlopen Megaslide, northern Svalbard
(Mastergradsoppgave; Master thesis, 2024-05-15)During a research cruise in the summer of 2022, a number of sediment cores were collected from the main headwall scar area of the Hinlopen Megaslide, northern Svalbard. In this study two of those sediment cores have undergone 14C AMS radiocarbon dating and a multi-proxy analysis to determine an accurate age for the slide deposits in this location. The results have been calibrated using the ... -
Marine- and Lacustrine Deposition of Eskers
(Mastergradsoppgave; Master thesis, 2024-05-16)The future stability of modern marine-terminating ice sheets is of great concern as an increased rate of retreat might mark the onset of their collapse. An increased rate of retreat is accompanied by an increase in meltwater and sediment discharge at the ice margin which has prompted research to focus on the drainage system of marine-terminating ice sheets. Recent discoveries of eskers at water-terminating ... -
A sedimentary insight into the coastal and environmental evolution of Hollendarbukta, Isfjorden: Early Holocene to present
(Mastergradsoppgave; Master thesis, 2024-05-13)Dramatic physical and biological shifts are occurring in the Arctic in response to rising surface air temperatures. Sedimentary coastal environments are particularly sensitive to these changes as they form at the interface between the terrestrial and shallow marine realm. The need to investigate sedimentary archives from coastal environments is crucial, to understand how they have responded during ... -
Contrasting Methane Seepage Dynamics in the Hola Trough Offshore Norway: Insights From Two Different Summers
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-07-09)This study investigates the temporal variations in methane concentration and flare activity in the Hola trough (offshore Norway) during May 2018 and June 2022. Between these time periods, methane seep activity exhibits 3.5 times increase, as evidenced by hydroacoustic measurements. As the seep area in the Hola trough is constantly within the hydrate stability zone, the observed increase cannot be ... -
NordVulk 1974-2024
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024)Nordisk Vulkanologisk Institut, senere kendt som Nordisk Vulkanologisk Center (NordVulk), på Island fylder 50 år i 2024. Desværre sammenfalder den runde fødselsdag med, at NordVulk nedlægges. Dermed afsluttes en lang, fremgangsrig og succesfuld æra med nordisk vulkanologisk forskning på Island. Her beretter vi lidt om NordVulks liv. -
Newly found evidence of the Late Devonian extinction by microtektites in black shales: Sellersburg, Indiana, USA
(Master thesis; Mastergradsoppgave, 2024-05-16)Our planet has experienced at least five major mass extinction events, which have occasionally brought the flora and fauna to almost complete collapse , yet they have been pivotal in the evolution of life as we know it. This thesis explores potential causes of mass extinctions, focusing particularly on the Late Devonian mass extinction event, which is the least understood of the major five. Over the ... -
Seasonal precipitation variability on Svalbard inferred from Holocene sedimentary leaf wax δ2H
(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 ... -
Morphology and structural, stratigraphic setting of volcanic deposits at Skoll High on the Vøring Plateau
(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 ... -
Early aerial expedition photos reveal 85 years of glacier growth and stability in East Antarctica
(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
(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
(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
(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
(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
(Book; Bok, 2024) -
Post-glaciation depositional changes in Wijdefjorden, northern Svalbard, using grain-size end-member modelling
(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
(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 ...
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