Blar i forfatter "Gudmestad, Ove Tobias"

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    • Availability of fresh water in cold climate regions 

      Awong, Nu Dah; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-21)
      Challenges related to the availability of fresh water in cold climate regions are discussed with emphasis on possible degradation of the quality of drinking water. The permafrost in this region has been consistent in making sure there is little drainage in the ground. This is important, as fresh water is mainly supplied through melting water from snow and ice in the many winter months. Climate ...

    • Communication of Arctic Marine Transportation opportunities 

      Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2022)
      In a risk analysis we identify the causes that could lead to unwanted events/ outcomes. We introduce barriers that will reduce the probabilities of such events and also barriers that will mitigate the consequences of such events.<p> <p>Regarding Arctic Marine Transportation Challenges, more attention should be placed on communicating all work that is undertaken to enhance the safety and limit ...

    • Design basis for Arctic infrastructure facilities 

      Myrmel, Liv Brita Hætta; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-18)
      A discussion related to the selection of a proper design basis for Arctic infrastructure facilities is presented. The design basis, which must be sufficiently robust to ensure safe operations of the facilities during their planned lifetime, should include relevant information available from the local and indigenous people of the area. The need to properly document all data and assumptions made ...

    • Impact of and solutions to effects of climate changes for Longyearbyen, Svalbard, Norway 

      Winther, Susanna N; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-21)
      Climate changes forces us to make significant mitigation and adaptation measures. As temperature rises and the environmental conditions changes, a variety of challenges occur. Across the whole globe, harming consequences are already being experienced. The Arctic region is particularly vulnerable to changes in Earth’s climate system, especially because of the albedo effect, and the region is ...

    • Marine Operations in Arctic conditions 

      Gudmestad, Ove Tobias; Døskeland, Øystein Husevåg (Journal article; Tidsskriftartikkel; Peer reviewed, 2023)
      Marine operations require careful early planning and thereafter detailed planning prior to project execution. The time from initiating an operation to finalization of the activity is typically several days. The activity can only be conducted during limited weather conditions. The planning prior to the offshore operations does, therefore, require accurate weather forecasting. The weather conditions ...

    • Polar Ship Design and Operations: Past, Present, and Future 

      Gudmestad, Ove Tobias (Chapter; Bokkapittel, 2022-12-25)
      From an early emphasis on geographic exploration and exploitation of the resources in the polar offshore area (by hunting for walrus ivory teeth, seals, and whales), the focus is currently shifting toward the sustainable use of the Arctic’s resources. Developments in the Antarctic are mainly limited to fisheries, cruise traffic, and scientific expeditions. The focus in the Arctic is currently on ...

    • Recent Norwegian Research Relevant to Evacuation, Search and Rescue under Arctic Condition 

      Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-10)
      Marine traffic is increasing in the Arctic Region. As ice in the Arctic Region retracts, opportunities for the marine industry increase. This relates to the fishing industry, which is moving further into the Arctic Seas, the shipping industry, which is using the Northern Sea Route, particularly for transporting liquefied natural gas, and the cruise industry, which is transporting passengers to ...

    • Simulation of peak tension loads in Subsea power cables during installation 

      Okkerstrøm, Lene; Gudmestad, Ove Tobias; Pedersen, Egil (Journal article; Tidsskriftartikkel; Peer reviewed, 2021)
      At present, most of the insurance claims in the offshore wind industry are due to cable failures where a large percentage occurs during the installation of the array and export cables. As the reliability of the cables depends on the location and installation method, it is important to map the risks involved, which can compromise the cable's integrity in individual projects. This paper presents ...

    • Stability of Vessels in an Ice-free Arctic 

      Johansen, Kåre; Sollid, Magne-Petter; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-09)
      One consequence of the declining ice cover in the Arctic is increased areas of open seas. These new open sea areas lead to some challenging aspects related to ship stability. Longer fetch lengths, associated with build-up of larger waves followed by increased conditions for sea spray icing on vessels is one aspect. Open seas in combination with cold atmospheric temperatures is a prerequisite for ...

    • Time to Rescue for Different Paths to Survival Following a Marine Incident 

      Solberg, Knut Espen; Jensen, Jan Erik; Barane, Endre; Hagen, Snorre; Kjøl, Andreas; Johansen, Gudmund; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-07)
      The time required for rescue is a critical factor for surviving a marine incident. The regulatory framework, International Maritime Organization (IMO) Polar Code, utilizes a risk-based approach. It states that the vessel operators are to define the time required for rescue but never less than 5 days. Based on experience from the classification society DNV GL, utilization of the minimum requirement ...

    • Transitioning towards renewable energy and sustainable storage solutions at remote communities in the Arctic, Case study of Flatey, Iceland 

      Hjallar, Milla; Vidisdottir, Elena Dis; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2023)
      The need for transitioning towards renwable energy and sustainable storage solutions is particularly challenging for remote communities in the Arctic, located far away from the electricity grid. This paper explores the potential for use of renewable energy on the remote island of Flatey, Iceland, which currently relies on two diesel aggregates for power. The primary goal is to assess the feasibility ...

    • Trends in seismic data acquisition in areas with surface ice 

      Hussain, Azeem; Gudmestad, Ove Tobias; Barabady, Javad (Peer reviewed; Bok; Chapter, 2019)
      The Arctic has great significance in relation to the exploration and exploitation of its huge petroleum resources. Seismic surveys are the key part of petroleum exploration. Reflected sound waves are used to produce a 3D subsurface geological model, which helps to take a decision on drilling location for potential hydrocarbon resources. Seismic surveys are very complex operations, and growing energy ...

    • Use of digital technology to follow the consequences of a warming Arctic climate 

      Myrmel, Liv Brita Hætta; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2021)
      The rapid warming climate is causing the Arctic ice to retreat and the permafrost to melt. These visible manifestations of the ongoing climate change are few of many environmental and societal changes that take place in the Arctic. The acceleration of digitalization and implementation of digital technology bring new opportunities to follow the consequences of the warmer arctic climate, but also ...

    • Use of simulator training to mitigate risks in arctic shipping operations 

      Røds, Johan-Fredrik; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06)
      Over the recent years, ship traffic in the polar areas has increased. There is reason to believe that this traffic, and especially the cruise traffic, will increase further as the ice retracts towards the poles. There is also reason to believe that with the continued focus and exposure of the Polar Region, the cruise tourism to the region will grow. The increased presence in the polar areas will ...