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2021 Fiscal Year Annual Research Report

Challenges for unexplored frontiers

Planned Research

Project AreaGiant reservoirs of heat/water/material : Global environmental changes driven by the Southern Ocean and the Antarctic Ice Sheet
Project/Area Number 17H06322
Research InstitutionNational Institute of Polar Research

Principal Investigator

野木 義史  国立極地研究所, 研究教育系, 教授 (90280536)

Co-Investigator(Kenkyū-buntansha) 吉田 弘  国立研究開発法人海洋研究開発機構, 研究プラットフォーム運用開発部門, 次長 (00359134)
沖野 郷子  東京大学, 大気海洋研究所, 教授 (30313191)
巻 俊宏  東京大学, 生産技術研究所, 准教授 (50505451)
青山 雄一  国立極地研究所, 研究教育系, 准教授 (70270452)
青木 茂  北海道大学, 低温科学研究所, 准教授 (80281583)
末吉 哲雄  国立研究開発法人海洋研究開発機構, 地球環境部門(北極環境変動総合研究センタ ー), 特任主任研究員 (80431344)
Project Period (FY) 2017-06-30 – 2022-03-31
Keywords地球観測 / 海洋工学 / 海洋探査 / 環境変動 / 地球変動予測
Outline of Annual Research Achievements

未探査領域である南極沿岸の海氷域と沿岸域に、ロボット技術等の無人観測技術をの適用を目指す本課題は、全体の会合を、2021年度には11回開催した。
AUVに関しては、水槽実験や海洋域での、試験を実施した。東京海洋大学の練習船海鷹丸による南極航海に参加し、氷海域でのAUV試験を実施予定であったが、本年度も新型コロナウィルス感染拡大の影響により、南極海航海が中止となったが、今後の南極氷海域での試験に備え、冬期の北海道紋別港における氷下海洋域における試験運用を追加実施した。さらにAUV回収のための、小型の遠隔操縦ロボット(ROV)は、水槽等や冬期の北海道紋別港氷下海洋域においても、AUVの回収試験を実施し、回収可能である事が確認し、改良点等の整理を行った。氷上に開けた穴から展開可能な小型ROVは、実際に南極域での観測を実施し、南極沿岸域の海氷下でのデータ取得に成功した。また、AUV探査を行う予定である南極周辺の既存海底地形データの収集と整理を継続するとともに、AUV搭載マルチビーム測深機データの解析手法の検討結果をまとめた。
回収を行った時系列データを衛星回線で送信する係留式ブイシステムについては、南極ケープダンレー沖での水温・塩分鉛直プロファイルの取得に成功し、データ解析を行い結果をまとめた。長期観測に向けた機器の改良の方向性に関しても検討した。
大陸域での観測では、固定翼・回転翼UAVを用い、昭和基地上空での空撮データを実施し、これまでのデータとともに昭和基地の表面地形図を作成および精度評価とともに、固体班と連携し、積雪による地殻変動や重力変化の評価結果のとりまとめを行った。また、氷河・棚氷の融解量把握のため白瀬氷河上において、氷河氷厚レーダーApRES(Autonomous phase-sensitive Radio-Echo Sounder) の観測結果のとりまとめも行った。

Research Progress Status

令和3年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和3年度が最終年度であるため、記入しない。

  • Research Products

    (45 results)

All 2022 2021

All Journal Article (19 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 19 results,  Open Access: 3 results) Presentation (26 results) (of which Int'l Joint Research: 17 results,  Invited: 3 results)

  • [Journal Article] Seasonal Variation and Governing Dynamics of the Mixed Layer in the Indian Sector of the Southern Ocean2022

    • Author(s)
      Ferreira Azevedo Matheus、Aoki Shigeru、Kitade Yujiro
    • Journal Title

      Journal of Geophysical Research: Oceans

      Volume: 127 Pages: -

    • DOI

      10.1029/2021JC017838

    • Peer Reviewed
  • [Journal Article] Validation for Ice Flow Velocity Variations of Shirase Glacier Derived From PALSAR-2 Offset Tracking2022

    • Author(s)
      Nakamura Kazuki、Aoki Shigeru、Yamanokuchi Tsutomu、Tamura Takeshi、Doi Koichiro
    • Journal Title

      IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing

      Volume: 15 Pages: 3269~3281

    • DOI

      10.1109/JSTARS.2022.3165581

    • Peer Reviewed
  • [Journal Article] A New Tectonic Model Between the Madagascar Ridge and Del Cano Rise in the Indian Ocean2022

    • Author(s)
      Sato Taichi、Nogi Yoshifumi、Sato Hiroshi、Fujii Masakazu
    • Journal Title

      Journal of Geophysical Research: Solid Earth

      Volume: 127 Pages: -

    • DOI

      10.1029/2021JB021743

    • Peer Reviewed
  • [Journal Article] Warm surface waters increase Antarctic ice shelf melt and delay dense water formation2022

    • Author(s)
      Aoki Shigeru、Takahashi Tomoki、Yamazaki Kaihe、Hirano Daisuke、Ono Kazuya、Kusahara Kazuya、Tamura Takeshi、Williams Guy D.
    • Journal Title

      Communications Earth & Environment

      Volume: 3 Pages: -

    • DOI

      10.1038/s43247-022-00456-z

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Development of AUV MONACA - Hover-Capable Platform for Detailed Observation Under Ice ?2021

    • Author(s)
      Yamagata Hirokazu、Kochii Shuma、Yoshida Hiroshi、Nogi Yoshifumi、Maki Toshihiro
    • Journal Title

      Journal of Robotics and Mechatronics

      Volume: 33 Pages: 1223~1233

    • DOI

      10.20965/jrm.2021.p1223

    • Peer Reviewed / Open Access
  • [Journal Article] The Effect of Basal Melting of the Shirase Glacier Tongue on the CO2 System in Lutzow-Holm Bay, East Antarctica2021

    • Author(s)
      Kiuchi Masaaki、Nomura Daiki、Hirano Daisuke、Tamura Takeshi、Hashida Gen、Ushio Shuki、Simizu Daisuke、Ono Kazuya、Aoki Shigeru
    • Journal Title

      Journal of Geophysical Research: Biogeosciences

      Volume: 126 Pages: -

    • DOI

      10.1029/2020JG005762

    • Peer Reviewed
  • [Journal Article] Multidecadal poleward shift of the southern boundary of the Antarctic Circumpolar Current off East Antarctica2021

    • Author(s)
      Yamazaki Kaihe、Aoki Shigeru、Katsumata Katsuro、Hirano Daisuke、Nakayama Yoshihiro
    • Journal Title

      Science Advances

      Volume: 7 Pages: -

    • DOI

      10.1126/sciadv.abf8755

    • Peer Reviewed
  • [Journal Article] Thermohaline structure and circulation beneath the Langhovde Glacier ice shelf in East Antarctica2021

    • Author(s)
      Minowa Masahiro、Sugiyama Shin、Ito Masato、Yamane Shiori、Aoki Shigeru
    • Journal Title

      Nature Communications

      Volume: 12 Pages: -

    • DOI

      10.1038/s41467-021-23534-w

    • Peer Reviewed / Open Access
  • [Journal Article] Tracing Circumpolar Deep Water and glacial meltwater using humic-like fluorescent dissolved organic matter in the Amundsen Sea, Antarctica2021

    • Author(s)
      Jeon Mi Hae、Jung Jinyoung、Park Mi Ok、Aoki Shigeru、Kim Tae-Wan、Kim Seung-Kyu
    • Journal Title

      Marine Chemistry

      Volume: 235 Pages: 104008~104008

    • DOI

      10.1016/j.marchem.2021.104008

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Poleward eddy-induced warm water transport across a shelf break off Totten Ice Shelf, East Antarctica2021

    • Author(s)
      Hirano Daisuke、Mizobata Kohei、Sasaki Hiroko、Murase Hiroto、Tamura Takeshi、Aoki Shigeru
    • Journal Title

      Communications Earth & Environment

      Volume: 2 Pages: -

    • DOI

      10.1038/s43247-021-00217-4

    • Peer Reviewed
  • [Journal Article] Antarctic Slope Current Modulates Ocean Heat Intrusions Towards Totten Glacier2021

    • Author(s)
      Nakayama Yoshihiro、Greene Chad A.、Paolo Fernando S.、Mensah Vigan、Zhang Hong、Kashiwase Haruhiko、Simizu Daisuke、Greenbaum Jamin S.、Blankenship Donald D.、Abe‐Ouchi Ayako、Aoki Shigeru
    • Journal Title

      Geophysical Research Letters

      Volume: 48 Pages: -

    • DOI

      10.1029/2021GL094149

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Seasonal Variations and Drivers of Surface Ocean pCO <sub>2</sub> in the Seasonal Ice Zone of the Eastern Indian Sector, Southern Ocean2021

    • Author(s)
      Tozawa Manami、Nomura Daiki、Nakaoka Shin‐ichiro、Kiuchi Masaaki、Yamazaki Kaihe、Hirano Daisuke、Aoki Shigeru、Sasaki Hiroko、Murase Hiroto
    • Journal Title

      Journal of Geophysical Research: Oceans

      Volume: 127 Pages: -

    • DOI

      10.1029/2021JC017953

    • Peer Reviewed
  • [Journal Article] Alteration processes recorded by back‐arc mantle peridotites from oceanic core complexes, Shikoku Basin, Philippine Sea2021

    • Author(s)
      Hirauchi Ken‐ichi、Segawa Izumi、Kouketsu Yui、Harigane Yumiko、Ohara Yasuhiko、Snow Jonathan、Sen Atlanta、Fujii Masakazu、Okino Kyoko
    • Journal Title

      Island Arc

      Volume: 30 Pages: -

    • DOI

      10.1111/iar.12419

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Melting and Evolution of Amphibole‐Rich Back‐Arc Abyssal Peridotites at the Mado Megamullion, Shikoku Basin2021

    • Author(s)
      Sen A.、Snow J. E.、Ohara Y.、Hirauchi K.、Kouketsu Y.、Sanfilippo A.、Basch V.、Harigane Y.、Fujii M.、Okino K.、Akizawa N.
    • Journal Title

      Geochemistry, Geophysics, Geosystems

      Volume: 22 Pages: -

    • DOI

      10.1029/2021GC010013

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Geochemical characteristics of back-arc basin lower crust and upper mantle at final spreading stage of Shikoku Basin: an example of Mado Megamullion2021

    • Author(s)
      Akizawa Norikatsu、Ohara Yasuhiko、Okino Kyoko、Ishizuka Osamu、Yamashita Hiroyuki、Machida Shiki、Sanfilippo Alessio、Basch Valentin、Snow Jonathan E.、Sen Atlanta、Hirauchi Ken-ichi、Michibayashi Katsuyoshi、Harigane Yumiko、Fujii Masakazu、Asanuma Hisashi、Hirata Takafumi
    • Journal Title

      Progress in Earth and Planetary Science

      Volume: 8 Pages: -

    • DOI

      10.1186/s40645-021-00454-3

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Shimajiri Group equivalent sedimentary rocks dredged from sea knolls off Kume Island, central Ryukyus: Implications for timing and mode of rifting of the middle Okinawa Trough back‐arc basin2021

    • Author(s)
      Kikunaga Ritoko、Song Ke‐han、Chiyonobu Shun、Fujita Kazuhiko、Shinjo Ryuichi、Okino Kyoko
    • Journal Title

      Island Arc

      Volume: 30 Pages: -

    • DOI

      10.1111/iar.12425

    • Peer Reviewed
  • [Journal Article] Seasonal Evolution of Cape Darnley Bottom Water Revealed by Mooring Measurements2021

    • Author(s)
      Mizuta Genta、Fukamachi Yasushi、Simizu Daisuke、Matsumura Yoshimasa、Kitade Yujiro、Hirano Daisuke、Fujii Masakazu、Nogi Yoshifumi、Ohshima Kay I.
    • Journal Title

      Frontiers in Marine Science

      Volume: 8 Pages: -

    • DOI

      10.3389/fmars.2021.657119

    • Peer Reviewed
  • [Journal Article] Dense water downslope flow and AABW production in a numerical model: Sensitivity to horizontal and vertical resolution in the region off Cape Darnley polynya2021

    • Author(s)
      Mensah Vigan、Nakayama Yoshihiro、Fujii Masakazu、Nogi Yoshifumi、Ohshima Kay I.
    • Journal Title

      Ocean Modelling

      Volume: 165 Pages: 101843~101843

    • DOI

      10.1016/j.ocemod.2021.101843

    • Peer Reviewed
  • [Journal Article] A bathymetric compilation of the Cape Darnley region, East Antarctica2021

    • Author(s)
      Smith Jodie、Nogi Yoshifumi、Spinoccia Michele、Dorschel Boris、Leventer Amy
    • Journal Title

      Antarctic Science

      Volume: 33 Pages: 548~559

    • DOI

      10.1017/S0954102021000298

    • Peer Reviewed / Int'l Joint Research
  • [Presentation] Latest developments on autonomous underwater platform systems2021

    • Author(s)
      Maki T.
    • Organizer
      Techno-Ocean 2021
    • Int'l Joint Research / Invited
  • [Presentation] KH-20-6航海による大東海嶺群・北大東海盆の地殻構造発達史への制約2021

    • Author(s)
      谷健一郎,沖野郷子ほか
    • Organizer
      海と地球のシンポジウム
  • [Presentation] 白鳳丸KH20-6航海ドレッジ試料の研究船上における岩石物性測定の速報2021

    • Author(s)
      長瀬薫平,谷健一郎,沖野郷子,片山郁夫
    • Organizer
      海と地球のシンポジウム
  • [Presentation] Melting and evolution of peridotites at the Mado Megamullion, and oceanic core complex in the Shikoku back-arc basin2021

    • Author(s)
      Atlanta Sen, Jonathan E Snow, Yasuhiko Ohara, Ken-ichi Hirauchi, Yui Kouketsu, Alessio Sanfilippo, Valentin Basch, Yumiko Harigane, Masakazu Fujii, Kyoko Okino, Norikatsu Akizawa
    • Organizer
      AGU Fall Meeting 2021
    • Int'l Joint Research
  • [Presentation] Structural controls on shallow slow earthquakes in the Hyuga-nada subduction zone, southwest Japan2021

    • Author(s)
      Arai Ryuta, Miura Seiichi , Nakamura Yasuyuki, Fujie Gou , Kaiho Yuka, Kodaira Shuichi, Mochizuki Kimihiro, Nakata Rie, Okino Kyoko
    • Organizer
      AGU Fall Meeting 2021
    • Int'l Joint Research
  • [Presentation] AUVによる極域探査のための複雑地形の追従_法 -シミュレーションによる性能評価-,2021

    • Author(s)
      小知井秀馬, 山縣広和, 巻俊宏
    • Organizer
      令和3年度日本船舶海洋工学会秋季講演会
  • [Presentation] 南極探査用AUV「MONACA」による北海道紋別港の海氷裏面マッピング2021

    • Author(s)
      小知井秀馬, 山縣広和, 吉田弘, 野木義史, 巻俊宏
    • Organizer
      海洋調査技術学会第33回研究成果発表会,
  • [Presentation] Near-seafloor magnetic anomaly reveals geomagnetic field fluctuation during 29_33 Myr2021

    • Author(s)
      Fujii M., K. Okino, C. Tamura,
    • Organizer
      The 150th Society of Geomagnetism and Earth, Planetary and Space Sciences fall meeting
  • [Presentation] Unveiling seafloor spreading mode and geodynamics in the Southeast Indian Ridge: New challenge in Japanese Antarctic Research Expedition2021

    • Author(s)
      Fujii M.
    • Organizer
      The 12th Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] On-shelf warm water circulation toward Totten Ice Shelf, East Antarctica2021

    • Author(s)
      Daisuke Hirano, Takeshi Tamura, Kazuya Kusahara, Masakazu Fujii, Kaihe Yamazaki, Yoshihiro Nakayama, Kazuya Ono, Takuya Itaki, Yuichi Aoyama, Daisuke Simizu, Kohei Mizobata, Kay I. Ohshima, Yoshifumi Nogi, Shigeru Aoki,
    • Organizer
      The 12th Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] Investigation on the interactions between the downslope flow of Antarctic Bottom water and upslope flow of modified Circumpolar Deep Water using a high-resolution model2021

    • Author(s)
      Vigan Mensah, Yoshihiro Nakayama, Masakazu Fujii, Yoshifumi Nogi, Kay I Ohshima,
    • Organizer
      The 12th Symposium on Polar Science
    • Int'l Joint Research
  • [Presentation] 海洋地殻生産の時間変動を追う2021

    • Author(s)
      沖野郷子
    • Organizer
      京都大学防災研究所70周年地震・火山グループ研究会
    • Invited
  • [Presentation] Oceanographic and geophysical observations off Sabrina Coast, East Antarctica, in 2019/20202021

    • Author(s)
      S. Aoki, T. Tamura, Y. Nakayama, K. Ono, P. Wongpan, K. Yamazaki, T. Itaki, Y. Tokuda, S. Sasaki, D. Hirano, Y. Aoyama
    • Organizer
      The 26th International Symposium on Polar Sciences
    • Int'l Joint Research
  • [Presentation] 南極探査AUV“MONACA”の開発 ―浅海域における自律航行試験―,2021

    • Author(s)
      山縣広和, 小知井秀馬, 吉田弘, 野木義史, 巻俊宏
    • Organizer
      ロボティクス・メカトロニクス講演会' 21
  • [Presentation] 東南極リュツォホルム湾海底堆積物から復元した最終氷期以降の氷床後退過程2021

    • Author(s)
      菅沼 悠介、羽田 裕貴、板木 拓也、石輪 健樹、藤井 昌和、加藤 悠爾、大森 貴之、天野 敦子、岩井 雅夫、西田 尚央、草原 和弥、平野 大輔、関 宰、香月 興太、川又 基人、松井 浩紀、奥野 淳一、池原 実、三浦 英樹
    • Organizer
      日本地質学会第128年学術大会
  • [Presentation] Development of Research Instruments for unexplored frontiers in the Southern Ocean and Antarctica2021

    • Author(s)
      Yoshifumi Nogi, Shigeru Aoki, Hiroshi Yoshida, Toshihiro Maki, Kyoko Okino, Yuichi Aoyama, Tetsuo Sueyoshi, Takeshi Tamura, Hirokazu Yamagata, Masakazu Fujii,
    • Organizer
      JpGU 2021
    • Int'l Joint Research
  • [Presentation] MONACA: The hot explorer under ice2021

    • Author(s)
      Maki T., Yamagata H., Yoshida H., Nogi Y.,
    • Organizer
      JpGU 2021
    • Int'l Joint Research / Invited
  • [Presentation] 極域探査AUV“MONACA”の開発―氷下環境での自律航行試験―,2021

    • Author(s)
      山縣広和, 小知井秀馬, 吉田弘, 野木義史, 巻俊宏
    • Organizer
      JpGU 2021
    • Int'l Joint Research
  • [Presentation] 南大洋バルカントランスフォーム断層に沿った海洋地殻生産の時間変動:白鳳丸KH-19-62021

    • Author(s)
      沖野郷子,谷健一郎,石塚治,高下裕章,周錦_
    • Organizer
      JpGU 2021
    • Int'l Joint Research
  • [Presentation] Mado Megamullion: a potential new target for IODP drilling to understand backarc basin lithosphere,2021

    • Author(s)
      小原泰彦、藤井昌和、秋澤紀克、Basch Valentin、針金由美子、平内健一、石塚治、町田嗣樹、道林克禎、沖野郷子、Sanfilippo Alessio、Sani Camilla、Sen Atlanta、Snow Jonathan、谷健一郎、山下浩之
    • Organizer
      JpGU 2021
    • Int'l Joint Research
  • [Presentation] 南東インド洋海嶺での深海磁気観測:29-33百万歳の海底の記録2021

    • Author(s)
      藤井昌和,沖野郷子,田村千織
    • Organizer
      JpGU 2021
    • Int'l Joint Research
  • [Presentation] 背弧リフティングステージにおける火山活動とテクトニクスの関係:南部沖縄トラフの3火山の解析から2021

    • Author(s)
      周錦_, 沖野郷子, 藤井昌和
    • Organizer
      JpGU 2021
    • Int'l Joint Research
  • [Presentation] Classification and estimation of petit-spot volcanos by acoustic measurement data,2021

    • Author(s)
      Yuki Matamura, Naoto Hirano, Masakazu Fujii
    • Organizer
      JpGU 2021
    • Int'l Joint Research
  • [Presentation] The new tectonic model between the Madagascar Ridge and the Del Cano Rise in the southern Indian Ocean2021

    • Author(s)
      Taichi Sato, Yoshifumi Nogi, Hiroshi Sato, Masakazu Fujii
    • Organizer
      JpGU 2021
    • Int'l Joint Research
  • [Presentation] Multibeam bathymetry off East Antarctica: 2010s Japanese observations2021

    • Author(s)
      Fujii M,, Y. Nogi
    • Organizer
      JpGU 2021
    • Int'l Joint Research
  • [Presentation] 日向灘における稠密地殻構造探査に基づくプレート沈み込み構造とスロー地震活動の関係2021

    • Author(s)
      新井隆太、三浦誠一、中村恭之、藤江剛、海宝由佳、小平秀一、望月公廣、仲田理映、沖野郷子
    • Organizer
      本地震学会秋季大会

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Published: 2023-12-25  

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