Blar i NTNU Open på forfatter "Høyland, Knut Vilhelm"
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A Study of the Strength and the Physical Properties of Glacier-ice Runways - Assesment of Troll Airfield, Antarctica
Kallelid, Maren Salte (Master thesis, 2018)Airfields located in Antarctica are unique because the runways are constructed by glacier ice. Ice as a construction material differs from conventional runway materials in sense of strength, hardness and temperature ... -
An analysis of international, national and local literature and the formulation of criteria, for the development of holistic sustainable Arctic coastal infrastructure.
Sherwin, Peter A. (Master thesis, 2020)Hurtige endringer i det arktiske sosialøkologiske system påvirker eksisterende bygd infrastruktur i en negativ grad, i tillegg til å øke interessen for dens videre utvikling. Grunnet ekspanderende næringer, samt Arktis’ ... -
The Arctic Fjord Breeze: Characteristics of a Combined Sea Breeze and Valley Wind in a Svalbard Fjord Valley
Henkies, Matthias Markus; Høyland, Knut Vilhelm; Shestov, Aleksey; Duscha, Christiane Anabell; Sjöblom, Anna (Peer reviewed; Journal article, 2023)Thermally-driven circulations are a frequent meteorological phenomenon in complex Arctic terrain, but the Arctic fjord breeze, a combined sea-breeze and up-valley wind, has received little attention. A field campaign was ... -
Arctic Freeboard and Snow Depth From Near-Coincident CryoSat-2 and ICESat-2 (CRYO2ICE) Observations: A First Examination of Winter Sea Ice During 2020–2022
Hansen, Renee Mie Fredensborg; Skourup, Henriette; Rinne, Eero; Høyland, Knut Vilhelm; Landy, Jack Christopher; Merkouriadi, Ioanna; Forsberg, René (Journal article; Peer reviewed, 2024)In the summer of 2020, ESA changed the orbit of CryoSat-2 to align periodically with NASA's ICESat-2 mission, a campaign known as CRYO2ICE, which allows for near-coincident CryoSat-2 and ICESat-2 observations in space and ... -
Bayesian Damage Prediction on Berm Breakwaters in the Arctic
Pontiki, Maria (Master thesis, 2018)A model for the computation of failure probabilities on partly reshaping mass-armored berm breakwaters in Arctic is presented. The model consists a reliable tool for the design of port structures in the rapidly changing ... -
Challenges with sea ice action on structures for Offshore wind
Høyland, Knut Vilhelm; Nord, Torodd Skjerve; Hendrikse, Hayo; Tuhkuri, Jukka; Polojärvi, Arttu; von Bock und Polach, Franz; Heinonen, Jaakko; Eik, Kenneth Johannessen; Teigen, Sigurd Henrik; Serré, Nicolas; schumann, björn; Granlund, Victor; von Borstel, Thomas; Reimer, Nils; Haase, Andrea; Sjöblom, Anna (Peer reviewed; Journal article, 2023)EU urgently needs to increase the development of secure and green energy, and this includes renewables such as Offshore wind energy. An expansion of Offshore wind will include the Baltic where sea ice is one of the major ... -
Combined distribution of ice thickness and speed based on local measurements at the Norströmsgrund lighthouse 2000-2003
Hornnes, Vegard; Høyland, Knut Vilhelm; Turner, Joshua Dennis; Gedikli, Ersegun Deniz; Bjerkås, Morten (Chapter, 2020)Abstract: Fatigue caused by ice-induced vibrations (IIV) is an important design consideration for offshore structures exposed to drifting sea ice. The occurrence of IIV is promoted by, but not limited to, certain combinations ... -
Comparison of Geoacoustic Models for Unfrozen Water Content Estimation
Lyu, Chuangxin; Ghoreishian Amiri, Seyed Ali; Grimstad, Gustav; Høyland, Knut Vilhelm; Ingeman-Nielsen, Thomas (Peer reviewed; Journal article, 2020)This paper reviews eight geoacoustic models applied to frozen soils: crystal growth models (grain cementing, grain coating, matrix supporting, and pore filling), the weighted equation (WE) model, Zimmerman and King's model ... -
Comparison of in-situ measurements from the Norströmsgrund lighthouse to Copernicus reanalysis products
Turner, Joshua Dennis; Høyland, Knut Vilhelm; Hornnes, Vegard; Gedikli, Ersegun Deniz (Chapter, 2020)Here, we aim to extend the full-scale data measurements of ice conditions and the resulting structure behaviour at the Norströmsgrund lighthouse to other locations in the Baltic Sea via comparison to the met-ocean conditions ... -
Consolidated layer thickness in probabilistic simulation of first-year ice ridges
Samardžija, Ilija; Høyland, Knut Vilhelm; Leira, Bernt Johan; Næss, Arvid (Peer reviewed; Journal article, 2023)This research study focuses on resolving the issue of sparse data and information required for the probabilistic assessment of ice ridge loads in offshore structures in Arctic regions. The study introduces the consolidated ... -
Consolidation of fresh ice ridges for different scales
Salganik, Evgenii; Høyland, Knut Vilhelm; Maus, Sønke (Peer reviewed; Journal article, 2020)This study characterizes the refreezing process of deformed ice. Twenty laboratory experiments in ice ridge consolidation were conducted to study the influence of ridge blocks size, initial temperature, and top surface ... -
Creation of a GIS based Case Study Collection for Marine Accidents and Exercises in the Arctic
Hamrock, Peter (Master thesis, 2023)Arctic sea ice has been experiencing a steady decline in its minimum extent, primarily occurring in September each year, with a current rate of shrinkage at 12% per decade. This diminishing sea ice has facilitated increased ... -
Decay phase thermodynamics of ice ridges in the Arctic Ocean
Shestov, Aleksey; Høyland, Knut Vilhelm; Ervik, Åse (Journal article; Peer reviewed, 2018)Four ice ridges (R1, R2, R3, and R4) were studied during the spring of 2015 in the Arctic Ocean. During the Norwegian Young Sea Ice expedition (N-ICE2015) from January 11 to June 23, the R/V Lance was moored at four different ... -
Development of Combined Load Spectra for Offshore Structures Subjected to Wind, Wave, and Ice Loading
Braun, Moritz; Dörner, Alfons; Ter Veer, Kane F.; Willems, Tom; Seidel, Marc; Hendrikse, Hayo; Høyland, Knut Vilhelm; Fischer, Claas; Ehlers, Sören (Peer reviewed; Journal article, 2022)Fixed offshore wind turbines continue to be developed for high latitude areas where not only wind and wave loads need to be considered but also moving sea ice. Current rules and regulations for the design of fixed offshore ... -
Development of environmental contours for first-year ice ridge statistics
Chai, Wei; Leira, Bernt Johan; Næss, Arvid; Høyland, Knut Vilhelm; Ehlers, Sören (Peer reviewed; Journal article, 2020)Ice ridges represent a major threat to ships and offshore structures in areas with sea ice but no icebergs, since they frequently determine and govern the structural design loads. This work focuses on the development of ... -
Different mechanisms of Arctic first-year sea-ice ridge consolidation observed during the MOSAiC expedition
Salganik, Evgenii; Lange, Benjamin; Itkin, Polona; Divine, Dmitry; Katlein, Christian; Nicolaus, Marcel; Hoppmann, Mario; Neckel, Niklas; Ricker, Robert; Høyland, Knut Vilhelm; Granskog, Mats (Peer reviewed; Journal article, 2023)Sea-ice ridges constitute a large fraction of the ice volume in the Arctic Ocean, yet we know little about the evolution of these ice masses. Here we examine the thermal and morphological evolution of an Arctic first-year ... -
Eliminating the Uncertainties in Hydraulic and Ice Loads on Berm Breakwaters
Leira, Bernt Johan; Høyland, Knut Vilhelm; Pontiki, Maria (Chapter, 2019)A model for the computation of failure probabilities for partly reshaping mass-armored berm breakwaters in the Arctic is presented. The model consists of a reliable tool for the design of port structures in the rapidly ... -
Experimental and numerical studies related to failure of first-year ice ridges against fixed vertically sided structures
Ervik, Åse (Doctoral theses at NTNU;2019:192, Doctoral thesis, 2019) -
Experimental Investigations of Freeze-Bonds between Saline Ice-Blocks: Ice-Properties and Reproducibility
Helgøy, Henning (Master thesis, 2012)This thesis presents and analyse laboratory investigations of the shear strength of freeze-bonds created between two saline ice-blocks. One hundred and eighty one experiments were conducted during spring 2012 in the ice ... -
Experimental Investigations of Ice Rubble: Shear Box and Pile Testing
Astrup, Oda Skog (Master thesis, 2012)The largest part of an ice ridge consists of unconsolidated ice rubble, whose material properties decide the load from ridges on ships and structures. Material resistance is attributed to the initial freeze-bonds and the ...