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Study on sea ice condition and navigability risk of Northern Sea Route

Research Project

Project/Area Number 21K04511
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 24020:Marine engineering-related
Research InstitutionHokkaido University

Principal Investigator

Otsuka Natsuhiko  北海道大学, 北極域研究センター, 特任教授 (50520201)

Co-Investigator(Kenkyū-buntansha) 平田 貴文  北海道大学, 北極域研究センター, 特任准教授 (80576231)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2023: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2022: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords北極航路 / 氷海航行 / 航行障害 / 海氷集積度 / 極海コード / 北極海航路 / 海氷 / 海氷リモートセンシング / 変形氷 / リモートセンシング / 北極海 / 航行リスク / 衛星リモートセンシング
Outline of Research at the Start

本研究では、衛星に搭載された観測器による北極海の海氷観測情報をもとに、氷群の集散、海氷密接度、氷厚などの状況を検討し、船の航行障害となる、氷盤が密に集まった氷域や氷丘脈などの氷況を把握する方法を検討する。また、実際の航行事例と海氷状況を比較分析し、北極海航路海域において航行障害リスクの高まる海氷状態の空間的・季節的出現特性を整理・可視化する。ここに、海氷密接度とは、海面を覆う海氷の割合を10分率で示したもので、完全に海氷に覆われている状態は10、海氷の無い状態は0となる。また氷丘脈とは、海面に浮いている氷盤が丘状に厚く積み重なり、それがうね状に連続した状態のことを示す。

Outline of Final Research Achievements

The Arctic shipping route, which connects the Atlantic and Pacific Oceans across the Arctic Ocean, could have a potential to become a new international shipping route against the background of long-term sea ice retreat. However, when navigating through icy waters, there is a serious navigational concern such as a decline in speed and beset(lost speed and halted) due to sea ice. This study analyzes the relationship between ship behavior and sea ice conditions in actual navigational incidents caused by sea ice using satellite observations and sea ice data sets by data assimilation system. Here, the sea ice convergence parameter based on the sea ice volume flux through the unit area of water surface was proposed, and the results showed that the occurrence of navigational hazards increases when sea ice tends to accumulate, and that the combination of this parameter and sea ice thickness may be used to estimate the sea area where the probability of navigational hazard occurrence increases.

Academic Significance and Societal Importance of the Research Achievements

氷海航行を安全に行うためには、海氷による航行障害を回避することが重要な要件である。しかし、通常得られる海氷情報である海氷厚と海面を覆う比率である密接度だけでは、航行障害を適切に予測することは難しい。これは、海氷が密に集積する状況において航行障害がより顕著に発生すると考えられるからである。本研究は、航行障害事例を衛星観測や海氷の数値解析による情報を用いて分析し、海氷の集散パラメータを提案することにより、航行障害の原因となる海氷状況を評価する技術を前進させたものである。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (48 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (7 results) Journal Article (14 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 1 results) Presentation (21 results) (of which Int'l Joint Research: 8 results,  Invited: 3 results) Remarks (3 results) Funded Workshop (3 results)

  • [Int'l Joint Research] CHNL of Nord University/FinnishMetrologicalInstitute/MoldeUniversity College(ノルウェー)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Nord University/Molde University College/Internationalcentreforreindeerhusbandry(ノルウェー)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Murmansk State Technical University/Northern Arctic Federal University(ロシア連邦)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] Finnish Meteorological Institute(フィンランド)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] LavalUniversity(カナダ)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research] UniversityofAlaskaatFairbanks(米国)

    • Related Report
      2022 Research-status Report
  • [Int'l Joint Research]

    • Related Report
      2022 Research-status Report
  • [Journal Article] Investigation of beset incidents in the Northern Sea Route by risk index and sea ice convergence2024

    • Author(s)
      Natsuhiko Otsuka、Shotaro Uto
    • Journal Title

      38th Intl. Symp. Okhotsk Sea and Polar Oceans

      Volume: 38 Pages: 31-34

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Model-based evaluation of future utilization of Northern Sea Route for technology roadmapping2024

    • Author(s)
      Kazunari Morikami、Ryota Wada、Ryuichi Shibasaki、Natsuhiko Otsuka
    • Journal Title

      38th Intl. Symp. Okhotsk Sea and Polar Oceans

      Volume: 38 Pages: 23-26

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Feasibility of the Northern Sea route with the effect of emission control measures2023

    • Author(s)
      Kavirathna Chathumi Ayanthi、Shibasaki Ryuichi、Ding Wenyi、Otsuka Natsuhiko
    • Journal Title

      Transportation Research Part D: Transport and Environment

      Volume: 123 Pages: 103896-103896

    • DOI

      10.1016/j.trd.2023.103896

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Northern Sea Routeにおける航行障害事例と海氷集積度2023

    • Author(s)
      大塚夏彦、宇都正太郎
    • Journal Title

      日本船舶海洋工学会講演会論文集

      Volume: 37

    • Related Report
      2023 Annual Research Report
  • [Journal Article] NSRの将来利用に対する研究開発の影響評価と技術ロードマップの検討2023

    • Author(s)
      森上和成、和田良太、柴崎隆一、大塚夏彦
    • Journal Title

      日本船舶海洋工学会講演会論文集

      Volume: 37

    • Related Report
      2023 Annual Research Report
  • [Journal Article] 海氷による航行障害事例と海氷集積度パラメータ2023

    • Author(s)
      大塚夏彦、宇都正太郎
    • Journal Title

      寒地技術論文・報告集

      Volume: 39 Pages: 54-59

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] NSRの将来利用に対する研究開発の影響評価と技術ロードマップの検討2023

    • Author(s)
      宇都正太郎、大塚夏彦
    • Journal Title

      寒地技術論文・報告集

      Volume: 39 Pages: 67-71

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Case analysis of cargo ship besetting caused by sea ice in the Northern Sea Route - from the incident in November 2021-2023

    • Author(s)
      大塚夏彦、小浜 等、佐藤恵子、宇都正太郎
    • Journal Title

      Proc. of International Symposium on Okhotsk Sea and Polar Oceans

      Volume: 37 Pages: 49-52

    • Related Report
      2022 Research-status Report
  • [Journal Article] Arctic Sea Route under Pandemic and Ukraine Crisis- Current state of commercial use-2023

    • Author(s)
      大塚夏彦
    • Journal Title

      Proc. of International Symposium on Okhotsk Sea and Polar Oceans

      Volume: 37 Pages: 193-196

    • Related Report
      2022 Research-status Report
  • [Journal Article] 北極海航路の現況と展望~パンデミックとウクライナ侵攻の影響2022

    • Author(s)
      大塚夏彦、小浜 等
    • Journal Title

      第38回寒地技術論文集

      Volume: 38 Pages: 265-268

    • Related Report
      2022 Research-status Report
  • [Journal Article] 北極海航路における海氷による航行障害と氷況2022

    • Author(s)
      大塚夏彦、宇都正太郎、佐藤恵子
    • Journal Title

      日本船舶海洋工学会講演会論文集

      Volume: 35 Pages: 123-124

    • Related Report
      2022 Research-status Report
  • [Journal Article] Environmental sustainability of Arctic shipping through potential HFO-banned areas along the NSR2021

    • Author(s)
      Chathumi Ayanthi Kavirathna, Ryuichi Shibasaki, Wenyi Ding, Natsuhiko Otsuka
    • Journal Title

      The 26th International Conference on Port and Ocean Engineering under Arctic Conditions

      Volume: 26

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Vessel speed optimization considering the environment and economic perspectives of Arctic Shipping2021

    • Author(s)
      Chathumi Ayanthi Kavirathna, Ryuichi Shibasaki, Wenyi Ding, Natsuhiko Otsuka
    • Journal Title

      Proceedings of the International Association of Maritime Economists (IAME 2021)

      Volume: -

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] 海氷状況による北極海航路航行船舶の航行可能速度の検討』、第37回寒地技術シンポジウム2021

    • Author(s)
      大塚夏彦、泉山 耕
    • Journal Title

      寒地技術論文・報告集

      Volume: 37 Pages: 45-50

    • Related Report
      2021 Research-status Report
  • [Presentation] Investigation of beset incidents in the Northern Sea Route by risk index and sea ice convergence2024

    • Author(s)
      Natsuhiko Otsuka
    • Organizer
      38th Intl. Symp. Okhotsk Sea and Polar Oceans
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Possible environmental risk due to the navigation along the Northern Sea Route2024

    • Author(s)
      Natsuhiko Otsuka
    • Organizer
      38th Intl. Symp. Okhotsk Sea and Polar Oceans
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Navigational hazard by sea ice convergence in the North East Passage2024

    • Author(s)
      Natsuhiko Otsuka
    • Organizer
      Arctic Frontiers 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Potential of Arctic Shipping?”, Future of Arctic Shipping in the era of escalating geopolitical tensions and regionalization2023

    • Author(s)
      Natsuhiko Otsuka
    • Organizer
      Arctic Circle Assembly
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Navigational hazard by sea ice along the North East Passage2023

    • Author(s)
      Natsuhiko Otsuka
    • Organizer
      The 14th Symposium on Polar Science
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Potential of Arctic Shipping ~ year-round operation becomes possible?2023

    • Author(s)
      Natsuhiko Otsuka
    • Organizer
      12th International Arctic Shipping Seminar in the Arctic Partnership Week 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Northern Sea Routeにおける航行障害事例と海氷集積度2023

    • Author(s)
      大塚夏彦
    • Organizer
      日本船舶海洋工学会 秋季講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 海氷による航行障害事例と海氷集積度パラメータ2023

    • Author(s)
      大塚夏彦
    • Organizer
      第39回寒地技術シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] Sustainability of the Northern Sea Route, commercial, environmental, and social perspectives2023

    • Author(s)
      大塚夏彦
    • Organizer
      Arctic Circle Japan Forum
    • Related Report
      2022 Research-status Report
  • [Presentation] Developing the Arctic Economy2023

    • Author(s)
      大塚夏彦
    • Organizer
      Plenary Sessions, Arctic Circle Japan Forum
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Case analysis of cargo ship besetting caused by sea ice in the Northern Sea Route - from the incident in November 2021-2023

    • Author(s)
      大塚夏彦
    • Organizer
      International Symposium on Okhotsk Sea and Polar Oceans
    • Related Report
      2022 Research-status Report
  • [Presentation] Arctic Sea Route under Pandemic and Ukraine Crisis- Current state of commercial use-2023

    • Author(s)
      大塚夏彦
    • Organizer
      International Symposium on Okhotsk Sea and Polar Oceans
    • Related Report
      2022 Research-status Report
  • [Presentation] Sustainability of the Northern Sea Route, commercial, environmental, and social perspectives2023

    • Author(s)
      大塚夏彦, 大西 富士夫
    • Organizer
      Seventh International Symposium on Arctic Research(ISAR7)
    • Related Report
      2022 Research-status Report
  • [Presentation] A Model-Based Social Impact Evaluation of R&D topics related to Northern Sea Routes2023

    • Author(s)
      K. Morikami, R. Wada, T. Tran, R. Shibasaki, N. Otsuka
    • Organizer
      Seventh International Symposium on Arctic Research(ISAR7)
    • Related Report
      2022 Research-status Report
  • [Presentation] 北極海航路の現況と展望~パンデミックとウクライナ侵攻の影響2022

    • Author(s)
      大塚夏彦
    • Organizer
      第38回寒地技術シンポジウム
    • Related Report
      2022 Research-status Report
  • [Presentation] 北極海航路における海氷による航行障害と氷況2022

    • Author(s)
      大塚夏彦、宇都正太郎、佐藤恵子
    • Organizer
      日本船舶海洋工学会秋季講演会
    • Related Report
      2022 Research-status Report
  • [Presentation] 地球温暖化のホットスポット北極2022

    • Author(s)
      大塚夏彦
    • Organizer
      日本建築学会 第51回 熱シンポジウム
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Potential and Sustainability of International Transportation on the Northern Sea Route2022

    • Author(s)
      Shotaro Uto and Natsuhiko Otsuka
    • Organizer
      The 11th International Arctic Shipping Seminar, Busan, Korea
    • Related Report
      2022 Research-status Report
  • [Presentation] Environmental sustainability of Arctic shipping through potential HFO-banned areas along the NSR2021

    • Author(s)
      Chathumi Ayanthi Kavirathna, Natsuhiko Otsuka
    • Organizer
      The 26th International Conference on Port and Ocean Engineering under Arctic Conditions
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Vessel speed optimization considering the environment and economic perspectives of Arctic Shipping2021

    • Author(s)
      Chathumi Ayanthi Kavirathna, Natsuhiko Otsuka
    • Organizer
      Annual Conference of International Association of Maritime Economists (IAME 2021)
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 海氷状況による北極海航路航行船舶の航行可能速度の検討』、第37回寒地技術シンポジウム2021

    • Author(s)
      大塚夏彦
    • Organizer
      第37回寒地技術シンポジウム
    • Related Report
      2021 Research-status Report
  • [Remarks] Thematic Network on Arctic Transport and Logistics

    • URL

      https://www.uarctic.org/activities/thematic-networks/arctic-transport-and-logistics/

    • Related Report
      2023 Annual Research Report
  • [Remarks] Arctic transportation and logistics

    • URL

      https://www.uarctic.org/activities/thematic-networks/arctic-transport-and-logistics/

    • Related Report
      2022 Research-status Report
  • [Remarks] Arctic transportation and logistics

    • Related Report
      2022 Research-status Report
  • [Funded Workshop] International Seminar on Arctic Shipping, Today and Future. Tokyo, Japan2024

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] North Pacific Arctic Research Community Meeting, Hokkaido University, Sapporo2023

    • Related Report
      2023 Annual Research Report
  • [Funded Workshop] ARCTIC OCEAN: A FIELD OF NEW OPPORTUNITY, Breakout Session organized by Hokkaido University Arctic Research Center(Japan) and Nord University Centre for High North Logistics(Norway)2023

    • Related Report
      2022 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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