Browsing NTNU Open by Author "Høyland, Knut Vilhelm"
Now showing items 41-60 of 64
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On the Design of Accurate Spatial and Temporal Temperature Measurements in Sea Ice
Meyer, Karsten (Master thesis, 2012)Studies on sea ice have become increasingly popular among researchers in the last decades, due to its effect on the global climate and the challenges it presents for arctic engineering. The research is in demand of reliable ... -
On the ice and wind conditions in the northern part of the Gulf of Bothnia leading ice-induced vibrations
Gedikli, Ersegun Deniz; Bjerkås, Morten; Høyland, Knut Vilhelm; Hornnes, Vegard; Turner, Joshua Dennis (Chapter, 2020)In ice infested regions drift ice can give serious damage to offshore structures and ships. The origin of the drifting ice is the winds and the currents. However, it is known that the Gulf of Bothnia does not have strong ... -
One-Dimensional Viscoelastic Simulation of Ice Behaviour in relation to Dynamic Ice Action
Yazarov, Maxim (Master thesis, 2012)When level ice is approaching the structure it exhibits the cyclic stress with in an increasing amplitude. The uniaxial compression cyclic tests of ice, performed at University Centre on Svalbard in 2007 (Sæbø, 2007), ... -
Overview of the MOSAiC expedition: Snow and sea ice
Marcel, Nicolaus; Perovich, Donald; Spreen, Gunnar; Granskog, Mats; Divine, Dmitry; Gerland, Sebastian; Gradinger, Rolf Rudolf; Høyland, Knut Vilhelm; Lange, Benjamin; Salganik, Evgenii (Journal article; Peer reviewed, 2022)Year-round observations of the physical snow and ice properties and processes that govern the ice pack evolution and its interaction with the atmosphere and the ocean were conducted during the Multidisciplinary drifting ... -
Pilot study of ice-structure interaction in a pendulum accelerator
Storheim, Martin; Nord, Torodd Skjerve; Kim, Ekaterina; Høyland, Knut Vilhelm; Langseth, Magnus; Amdahl, Jørgen; Løset, Sveinung (Journal article; Peer reviewed, 2015)More knowledge on the coupled response of ice and structure in collision in which both bodies undergo permanent damage is needed. These types of experiments are challenging to perform in a laboratory at relatively high ... -
Probabilistic assessment of first-year ice ridge loads on offshore structures
Samardžija, Ilija (Doctoral theses at NTNU;2024:45, Doctoral thesis, 2024)Advancements in technological capabilities, growing energy demands, and climate change are making offshore regions with floating sea ice increasingly attractive for infrastructure development. Notable examples include the ... -
Probabilistic Assessment of Ice Environment and Ridge Loads for the Norströmsgrund Lighthouse
Samardžija, Ilija; Høyland, Knut Vilhelm; Leira, Bernt Johan; Næss, Arvid (Chapter, 2018)Structural reliability analysis requires statistical distribution of the loads. One such case is ice load calculation for offshore structures. Ice-structure interaction is a highly stochastic phenomenon due to the natural ... -
Probabilistic assessment of ice rose diagrams for ice drift in the beaufort sea
Sinsabvarodom, Chana; Chai, Wei; Leira, Bernt Johan; Høyland, Knut Vilhelm; Næss, Arvid (Journal article; Peer reviewed, 2019)The intention of this paper is to introduce the ice rose diagram, which is a graphical tool that makes it possible to display the ice drift speed, the occurrence frequency, and the drift direction at a particular location ... -
Probabilistic Modelling of Icedrift and Ice Loading on Fixed and Floating Offshore Structures
Sinsabvarodom, Chana (Doctoral theses at NTNU;2023:29, Doctoral thesis, 2023) -
Report on Field Investigation and Long-Term Plate Loading test in Permafrost
Ghoreishian Amiri, Seyed Ali (Research report, 2023)This report presents a comprehensive overview of field investigations and large-scale plate loading tests conducted at the UNIS East site in Longyearbyen from March 2020 to July 2023. These tests were undertaken as part ... -
Rubble Macro-porosity of Level Ice Accumulation on Wide Sloping Offshore Structures
Zhang, Fan (Master thesis, 2018)1. Ice block size distribution have significant effect on rubble porosity. The length and thickness of the ice blocks in the ice rubbles is measured with image processing approach. Correlation analysis shows that the ice ... -
Scale-model ridges and interaction with narrow structures, Part 1 Overview and scaling
Shestov, Aleksey; Ervik, Åse; Heinonen, Jaakko; Perala, Ilkka; Høyland, Knut Vilhelm; Salganik, Evgenii; Li, Hongtao; van den Berg, Marnix; Jiang, Zongyu; Puolakka, Otto (Chapter, 2020) -
Snowmelt contribution to Arctic first-year ice ridge mass balance and rapid consolidation during summer melt
Lange, Benjamin A.; Salganik, Evgenii; Macfarlane, Amy; Schneebeli, Martin; Høyland, Knut Vilhelm; Gardner, Jessie; Müller, Oliver; Divine, Dmitry; Kohlbach, Doreen; Katlein, Christian; Granskog, Mats (Peer reviewed; Journal article, 2023)Sea ice ridges are one of the most under-sampled and poorly understood components of the Arctic sea ice system. Yet, ridges play a crucial role in the sea ice mass balance and have been identified as ecological hotspots ... -
Statistical analysis of ice-induced loads on the norstromsgrund lighthouse
Tu, Ying; Nord, Torodd Skjerve; Høyland, Knut Vilhelm; Petersen, Øyvind Wiig (Journal article; Peer reviewed, 2019)Structures may experience ice-induced vibrations under a wide range of ice conditions. This paper presents a statistical analysis of ice-induced forces on the Norströmsgrund lighthouse. A total of 61 measured events of ... -
Statistics of thickness and strength of first-year ice along the Northern Sea Route
Chai, Wei; Leira, Bernt Johan; Høyland, Knut Vilhelm; Sinsabvarodom, Chana; Yu, Zhaolong (Peer reviewed; Journal article, 2020)In this paper, statistics of ice thickness and ice strength of first-year sea ice along the Northern Sea Route (NSR) is studied to provide useful information for the design and operation of Arctic ships. Specifically, ice ... -
Statistics of thickness and strength of first-year ice along the Northern Sea Route
Chai, Wei; Leira, Bernt Johan; Høyland, Knut Vilhelm; Sinsabvarodom, Chana; Yu, Zhaolong (Peer reviewed; Journal article, 2020)In this paper, statistics of ice thickness and ice strength of first-year sea ice along the Northern Sea Route (NSR) is studied to provide useful information for the design and operation of Arctic ships. Specifically, ice ... -
Svalbard fjord environments with land-fast sea ice as arenas for climate research, monitoring, remote sensing validation, and dedicated process studies
Gerland, Sebastian; Divine, Dmitry V; Fransson, Agneta; Granskog, Mats; Pavlova, Olga; Chierici, Melissa; Høyland, Knut Vilhelm; Johansson, Malin; Marchenko, Aleksey (Peer reviewed; Journal article, 2020)During winter and spring, parts of Svalbard fjords are covered with land-fast sea ice. The extent of fast ice areas has decreased during the last two decades, and seasons with fjord ice cover have on average become shorter. ... -
Temporal evolution of under-ice meltwater layers and false bottoms and their impact on summer Arctic sea ice mass balance
Salganik, Evgenii; Katlein, Christian; Lange, Benjamin; Matero, Ilkka; Lei, Ruibo; Fong, Allison A.; Fons, Steven; Divine, Dmitry; Oggier, Marc; Castellani, Giulia; Bozzato, Deborah; Chamberlain, Emelia; Hoppe, Clara J. M.; Müller, Oliver; Gardner, Jessie; Rinke, Annette; Simoes Pereira, Patric; Ulfsbo, Adam; Marsay, Christopher; Webster, Melinda; Maus, Sønke; Høyland, Knut Vilhelm; Granskog, Mats (Peer reviewed; Journal article, 2023)Nåtidens endringer av havisen i Polhavet medfører ikke bare tynnere is og redusert isutbredelse, men også endringer i utbredelsen av eldre, flerårig is. Gjennom de siste 20 årene har andelen med flerårig havis, havis som ... -
The Determination of Heat Transfer Coefficient on Water-ice Surface in a Free Convection
Chen, Xiaodong; Høyland, Knut Vilhelm; Ji, Shunying (Journal article; Peer reviewed, 2017)In ice ridges consolidation, the convective heat flux term comes critical due to the larger contact areas and surface temperature differences compare with those from level ice. In this paper, a submerging experiment was ... -
The thermal conductivity of a melting snow layer and its effect on temperature and surface condition modelling of heated pavements
Nuijten, Anne (Doctoral theses at NTNU;2018:29, Doctoral thesis, 2018)During winter time snow and frost formation on roads can cause slippery conditions leading to reduced safety and decreased mobility. To prevent slippery conditions winter maintenance measures are taken such as snow ploughing, ...