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• Microbial distribution on sandstone with honeycomb weathering along rocky coasts in a subtropical environment

  Takayuki Ogata, Naoya Shinzato, Hitoshi Matsubara

  Terrestrial, Atmospheric and Oceanic Sciences   in press   2026 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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    DOI

• Neotectonics in Ryukyu arc-Future works on processes of uplift and subsidence

  Makoto Otsubo, Takayuki Ogata

    130 ( 1 ) 153 - 165   2024.05 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

• Neotectonics in Ryukyu arc-Future works on processes of uplift and subsidence-

  Otsubo Makoto, Ogata Takayuki

  The Journal of the Geological Society of Japan ( The Geological Society of Japan )  130 ( 1 ) 153 - 165   2024

  Type of publication: Research paper (scientific journal)

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  <p>We review the timing, mode, and topographic development of the Ryukyu Arc from the viewpoint of Quaternary crustal deformation. We also discuss the uplift and subsidence trends of the island region of the Ryukyu Arc, and the timing and mechanism of formation of depressions (Tokara Tectonic Strait, Kerama Gap, and Yonaguni Depression) that divide the island region of the Ryukyu Arc. The strikes of normal faults in the Tokara Tectonic Strait and Kerama Gap differ from those in the Yonaguni Depression. The timing of uplift and subsidence is spatially variable throughout the island region of the Ryukyu Arc. Future work will focus on neotectonics, geomorphic processes and landform development in the context of neotectonics, and the ongoing tectonic evolution of the island arc.</p>

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• Geomorphic Analyses of Low-relief Landforms and Reconsideration of Uplifted Peneplain in the Abukuma Mountains, Northeast Japan

  Taichi HIRAOKA, Takayuki OGATA

  E-journal GEO ( The Association of Japanese Geographers )  19 ( 1 ) 15 - 28   2024

  Type of publication: Research paper (scientific journal)

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  <p>An uplifted peneplain is a geomorphic stage of the classical model of the “cycle of erosion" proposed by W. M. Davis, although recent geomorphic studies suggest that low-relief mountains and hills in Japan should be reconsidered based on quantitative landform analyses. This study discusses the low-relief landforms considered to be uplifted peneplains of the Abukuma Mountains in northeast Japan. GIS analyses were undertaken using DEM10B data of the Geospatial Information Authority of Japan (GSI) in the Niida, Furumichi, and Natsui River basins located in the Abukuma Mountains. Longitudinal profiles indicate many knick-zones along the three rivers at the edges of the low-relief surfaces defined as boundaries between gentle- and steep-slope areas. These knick-zones range from 300 m to 420 m in elevation and are situated in various geological settings. GIS analyses show the various elevations of ridge lines within each basin and the edges of low-relief surfaces operating as the local base levels of erosion in the Niida and Natsui River basins, which suggest different geomorphic formations in the cycle of erosion including a stage of uplifted peneplain.</p>

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• Geosites of Yonaguni Island Located at the Westernmost Point of Japan

  Takayuki Ogata

  E-journal GEO   15 ( 1 ) 44 - 54   2020.02 [ Peer Review Accepted ]

  Type of publication: Research paper (scientific journal)

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Books 【 display / non-display 】

• Geosites and Geodiversity of Ryukyu Islands

  Takayuki Ogata ( Part: Single Author )

  2022.12

• Proceedings of the 15th International Symposium on Origin of Matter and Evolution of Galaxies (OMEG15), July 2-5, 2019, Kyoto, Japan

  International Symposium on Origin of Matter and Evolution of Galaxies, Kawabata T., Itagaki N., Kanada-En'yo Y., Maeda K., Nishimura N., Ogata K., 嶋 達志, Tamii A., Terada K., Uchida H., Yamaguchi H., Yoshida K. ( Part: Single Author )

  Physical Society of Japan  2020

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• Geoscientific Sites and Story of Kikai Island, Located among the Amami Islands, Japan

  Takayuki Ogata

  Journal of Geography ( Tokyo Geographical Society )  124 ( 1 ) v - v   2015  [Refereed]

   

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• 寄稿「南北大東島の『淡水レンズ』」  Newspaper, magazine

  沖縄タイムス  2025.8

  Author： Myself 

• 連載「ミャンマー中部地震（現地リポート）」  Newspaper, magazine

  沖縄タイムス  2025.5

  Author： Myself 

• ジオ・ジャパン 絶景100の旅「奄美群島」  TV or radio program

  NHK  ジオ・ジャパン 絶景100の旅  2024.11

• ベトナム 変幻の大地〜ハロン湾と北部絶景地帯〜  TV or radio program

  NHK  グレートネイチャー  2024.7

• 与那国島「謎に包まれた海底伝説」  TV or radio program

  テレビ東京  所でナンじゃこりゃ！？  2023.3

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