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2013 Fiscal Year Final Research Report

Why the continental margin around the Antarctica is deeper than other continental shelves ?

Research Project

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Project/Area Number 23501255
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Geography
Research InstitutionNational Institute of Polar Research

Principal Investigator

OKUNO Jun'ichi  国立極地研究所, 北極観測センター, 特任研究員 (00376542)

Co-Investigator(Kenkyū-buntansha) MIURA Hideki  国立極地研究所, 研究教育系, 助教 (10271496)
Project Period (FY) 2011 – 2013
Keywords南極氷床 / 地形 / 第四紀 / 氷床変動 / 地殻変動
Research Abstract

The growth and decay history of Antarctic ice sheet affected geographic formation of the Antarctica including its margin through the Cenozoic era. The depth of the continental shelf around the Antarctica is very deep in comparison with that of the other sea areas in the world. The reason why continental shelf of Antarctica is very deep is that the Antarctic ice sheet would depress the continent including the continental shelf. Based on the glacial isostatic adjustment (GIA) modelling, we estimate the effect of the Antarctic ice load on the depth of the continental shelf around the Antarctica. GIA modelling results show that deformation due to the present ice distribution cannot satisfy the anomaly of the continental shelf depths in this region. However, the results based on the ice load model including the last glacial cycle explain the depth around the Antarctica, and imply that the Antarctic ice sheet extent to continental shelf at the Last Glacial Maximum.

  • Research Products

    (25 results)

All 2014 2013 2012 2011

All Journal Article (12 results) (of which Peer Reviewed: 11 results) Presentation (12 results) Book (1 results)

  • [Journal Article] Vertical tectonic crustal movements along the Japanese coastlines inferred from late Quaternary and recent relative sea-level changes2014

    • Author(s)
      J.Okuno, M.Nakada, M.Ishii, H.Miura
    • Journal Title

      Quaternary Science Reviews

      Volume: 91 Pages: 42-61

    • DOI

      10.1016/j.quascirev.2014.03.010

    • Peer Reviewed
  • [Journal Article] Insolation-driven 100,000-year glacial cycles and hysteresis of ice-sheet volume2013

    • Author(s)
      Abe-Ouchi, A., F.Saito, K.Kawamura, M.E.Raymo, J.Okuno, K.Takahashi, H.Blatter
    • Journal Title

      Nature

      Volume: 500 Pages: 190-194

    • DOI

      10.1038/nature12374

    • Peer Reviewed
  • [Journal Article] Initiation of the Changjiang (Yangtze) delta and its response to the mid-Holocene sea level change2013

    • Author(s)
      B.Song, Z.Li, Y.Saito, J.Okuno, Z.Li, A.Lu, D.Hua, J.Li, Y.Li, R.Nakashima
    • Journal Title

      Palaeogeography, Palaeoclimatology, Palaeoecology

      Volume: 388 Pages: 81-97

    • DOI

      10.1016/j.palaeo.2013.07.026

    • Peer Reviewed
  • [Journal Article] GIA-related rotational variations for the Earth with low viscosity D″ layer2013

    • Author(s)
      M.Nakada, J.Okuno
    • Journal Title

      Geophysical Journal International

      Volume: 195 Pages: 725-739

    • DOI

      10.1093/gji/ggt290

    • Peer Reviewed
  • [Journal Article] Twentieth century sea-level rise inferred from tide gauge, geologically derived and thermosteric sea-level changes2013

    • Author(s)
      M.Nakada, J.Okuno, M.Ishii
    • Journal Title

      Quaternary Science Reviews

      Volume: 75 Pages: 114-131

    • DOI

      10.1016/j.quascirev.2013.06.010

    • Peer Reviewed
  • [Journal Article] Last deglacial relative sea level variations in Antarctica derived from glacial isostatic adjustment modelling2013

    • Author(s)
      J.Okuno, H.Miura
    • Journal Title

      Geoscience Frontiers

      Volume: 4 Pages: 623-632

    • DOI

      10.1016/j.gsf.2012.11.004

    • Peer Reviewed
  • [Journal Article] A new sampling technique for surface exposure dating using a portable electric rock cutter2012

    • Author(s)
      Y.Suganuma, H.Miura, H, J.Okuno
    • Journal Title

      Antarctic Record

      Volume: 56-2 Pages: 85-90

    • URL

      http://ci.nii.ac.jp/naid/110009493891

    • Peer Reviewed
  • [Journal Article] Holocene sea-level change and Antarctic melting history derived from geological observations and geophysical modeling along the Shimokita Peninsula, northern Japan2012

    • Author(s)
      Y.Yokoyama, J.Okuno, Y.Miyairi, S.Obrochta, N.Demboya, Y.Makino, H.Kawahata
    • Journal Title

      Geophysical Research Letters

      Volume: 39 Pages: L13502

    • DOI

      10.1029/2012GL051983

    • Peer Reviewed
  • [Journal Article] Ice-sheet collapse and sea-level rise at the Bolling warming 14,600 years ago2012

    • Author(s)
      P.Deschamps, N.Durand, E.Bard, B.Hamelin, G.Camoin, A.L.Thomas, C.M.Henderson, J.Okuno, Y.Yokoyama
    • Journal Title

      Nature

      Volume: 483 Pages: 559-564

    • DOI

      10.1038/nature10902

    • Peer Reviewed
  • [Journal Article] Post-depositional remnant magnetization lock-in for marine sediments deduced from ^<10>Be and paleomagnetic records through the Matsuyama-Brunhes boundary2011

    • Author(s)
      Y.Suganuma, J.Okuno, D.Heslop, A.P.Roberts, T.Yamazaki, Y.Yokoyama
    • Journal Title

      Earth and Planetary Science Letters

      Volume: 311 Pages: 39-52

    • DOI

      10.1016/j.epsl.2011.08.038

    • Peer Reviewed
  • [Journal Article] Formation and fate of sedimentary depocentres on Southeast Asia's Sunda Shelf over the past sea-level cycle and biogeographic implications2011

    • Author(s)
      T.J.J.Hanebuth, H.K.Voris, Y.Yokoyama, Y.Saito, J.Okuno
    • Journal Title

      Earth-Science Reviews

      Volume: 104 Pages: 92-110

    • DOI

      10.1016/j.earscirev.2010.09.006

    • Peer Reviewed
  • [Journal Article] グラシオ・ハイドロアイソスタシー2011

    • Author(s)
      中田正夫,奥野淳一
    • Journal Title

      地形

      Volume: 32-3 Pages: 327-331

    • URL

      http://ci.nii.ac.jp/naid/110008733495

  • [Presentation] Glacial isostatic adjustment simulations based on the ice sheet histories derived from 3D thermo-mechanical ice sheet model IcIES2013

    • Author(s)
      J.Okuno, F.Saito, A.Abe-Ouchi, K.Takahashi
    • Organizer
      第4回極域科学シンポジウム
    • Place of Presentation
      東京
    • Year and Date
      2013-11-13
  • [Presentation] Effect of the glacial rebound on elevation changes deduced from the ice core records in Greenland ice sheet2013

    • Author(s)
      J.Okuno, F.Saito, A.Abe-Ouchi, K.Takahashi
    • Organizer
      第4回極域科学シンポジウム
    • Place of Presentation
      東京
    • Year and Date
      2013-11-12
  • [Presentation] 3次元氷床モデルより求められた氷床融解史によるグリーンランドの地殻変動2013

    • Author(s)
      奥野淳一,齋藤冬樹,阿部彩子,高橋邦生
    • Organizer
      日本地球惑星科学連合2013年大会
    • Place of Presentation
      千葉
    • Year and Date
      2013-05-21
  • [Presentation] Marine Isotope Stage 3 and Holocene relative sea level variations in East Antarctica derived from glacial isostatic adjustment modelling2012

    • Author(s)
      J.Okuno, H.Miura
    • Organizer
      第32回極域地学シンポジウム
    • Place of Presentation
      東京
    • Year and Date
      2012-11-26
  • [Presentation] Effect of glacial isostasy on the depth of Antarctic continental margin2012

    • Author(s)
      J.Okuno, H.Miura, Y.Nogi
    • Organizer
      EGU General Assembly 2012
    • Place of Presentation
      Austria
    • Year and Date
      2012-04-24
  • [Presentation] 最終氷期最盛期における南極氷床拡大範囲と氷床量2011

    • Author(s)
      奥野淳一,三浦英樹
    • Organizer
      第2回極域科学シンポジウム
    • Place of Presentation
      東京
    • Year and Date
      2011-11-15
  • [Presentation] 酸素同位体ステージ3以降の東南極氷床変動に関する考察2011

    • Author(s)
      奥野淳一,三浦英樹
    • Organizer
      日本第四紀学会2011年大会
    • Place of Presentation
      徳島
    • Year and Date
      2011-08-26
  • [Presentation] Mid-Holocene collapse of the East Antarctic Ice Sheet derived from near-field sea-level changes2011

    • Author(s)
      J.Okuno, H.Miura, H.Maemoku
    • Organizer
      XVIII International Union for Quaternary Research - Congress
    • Place of Presentation
      Switzerland
    • Year and Date
      2011-07-26
  • [Presentation] East Antarctic Ice Sheet fluctuations in mid-Holocene derive from near-field sea levels2011

    • Author(s)
      J.Okuno, H.Miura, H.Maemoku
    • Organizer
      11th International Symposium on Antarctic Earth Sciences
    • Place of Presentation
      United Kingdom
    • Year and Date
      2011-07-14
  • [Presentation] Marginal history of East Antarctic ice sheet derived from glacial-marine geological stratigraphy and sea-level variations before LGM2011

    • Author(s)
      H.Miura, J.Okuno, H.Maemoku
    • Organizer
      11th International Symposium on Antarctic Earth Sciences
    • Place of Presentation
      United Kingdom
    • Year and Date
      2011-07-14
  • [Presentation] 東南極の大陸棚上に認められる氷河地形の特徴と第四紀の陸上氷床変動史との関連性2011

    • Author(s)
      三浦英樹,太田晴美,泉紀明,菅沼悠介,奥野淳一,野木義史
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      千葉
    • Year and Date
      2011-05-26
  • [Presentation] 南極大陸縁辺部における大陸棚深度に対する氷床変動の影響2011

    • Author(s)
      奥野淳一,三浦英樹,野木義史
    • Organizer
      日本地球惑星科学連合2011年大会
    • Place of Presentation
      千葉
    • Year and Date
      2011-05-25
  • [Book] インダス期海湾都市の盛衰に影響した海岸線環境の変化とハイドロアイソスタシー. インダス 南アジア基層世界を探る (長田俊樹編)2013

    • Author(s)
      宮内崇裕,奥野淳一
    • Total Pages
      67-99
    • Publisher
      京都大学学術出版会

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Published: 2015-07-16  

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