Decadal vision in oceanography 2021: Deep ocean

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  • Oka Akira
    Atmosphere and Ocean Research Institute, The University of Tokyo
  • Obayashi Yumiko
    Center for Marine Environmental Studies, Ehime University
  • Katsumata Katsuro
    Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology
  • Takahashi Kazutaka
    Graduate School of Agricultural and Life Sciences, The University of Tokyo
  • Yamashita Youhei
    Faculty of Environmental Earth Science, Hokkaido University
  • Yokokawa Taichi
    Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-star), Japan Agency for Marine-Earth Science and Technology

Bibliographic Information

Other Title
  • 海洋学の10年展望2021：深層
  • カイヨウガク ノ 10ネン テンボウ 2021 : シンソウ

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Abstract

<p>Focusing on the deep ocean, in this article, we summarize the existing research topics and discuss the direction and significance of future research. We focused on the ocean biogeochemical cycle in the deep ocean as an interdisciplinary topic that involves physics, chemistry, and biology. In particular, we discussed three issues: (1) transport from the deep to intermediate ocean, (2) transport and changes of organic matter from the surface to deep and intermediate oceans, and (3) temporal changes in the deep ocean. In (1), we discussed the relevance of quantifying the transport from the deep to intermediate layer in the Pacific Ocean to broaden our understanding from a vertical 1D perspective to a 3D one. In (2), we summarized the new concept of recently proposed organic matter pumps and discussed the necessity of approaches from both process and modeling studies. In (3), to understand the future changes in the deep ocean that will progress gradually, we discussed the relevance of various approaches, such as paleoceanographic studies and numerical models, in addition to continuous monitoring by observation.</p>

Journal

  • Oceanography in Japan

    Oceanography in Japan 30 (5), 179-198, 2021-11-15

    The Oceanographic Society of Japan

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