Updated on 2022/07/06

写真a

 
KAJITA HIROTO
 
Affiliation
Shizen Kagakukei(It is currently under consideration) Safety Science and Technology Section
Full-time staff
Graduate School of Science and Technology Research Division

Degree

  • 博士(理学)

Research Interests

  • Limnology

  • Geochemistry

  • Paleoclimatology&Paleoceanography

Professional Memberships

  • 日本地質学会

  • Paleo-sciences Society

  • Geochemical Society of Japan

  • Japan Geoscience Union

Papers

  • Biomarkers in the rock outcrop of the Kazusa Group reveal palaeoenvironments of the Kuroshio region (Jul, 10.1038/s43247-021-00154-2, 2021)

    Kajita Hiroto, Maeda Ayumi, Utsunomiya Masayuki, Yoshimura Toshihiro, Ohkouchi Naohiko, Suzuki Atsushi, Kawahata Hodaka

    COMMUNICATIONS EARTH & ENVIRONMENT   2 ( 1 )   2021.7

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    Language:English   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

    Web of Science

  • Biomarkers in the rock outcrop of the Kazusa Group reveal palaeoenvironments of the Kuroshio region

    Hiroto Kajita, Ayumi Maeda, Masayuki Utsunomiya, Toshihiro Yoshimura, Naohiko Ohkouchi, Atsushi Suzuki, Hodaka Kawahata

    Communications Earth & Environment   2 ( 1 )   2021.5

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    Language:English   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

    Web of Science

  • The influence and impact of tsunamis on the microorganism assembly of Nagatsura-Ura Lagoon, Miyagi, northeastern Japan

    Yutaka Okumura, Hiromi Matsuoka, Hisayuki Arakawa, Fuyuki Tokanai, Atsushi Suzuki, Toshiaki Irizuki, Hiroto Kajita, Motoyuki Hara

    Fisheries Science   87 ( 1 )   121 - 130   2021.1

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    Language:English   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

    Web of Science

  • Seasonal and Spatial Variations of Chemical Weathering in the Mekong Basin: From the Headwaters to the Lower Reaches

    Hiroto Kajita, Yuki Ota, Toshihiro Yoshimura, Daisuke Araoka, Takuya Manaka, Ouyang Ziyu, Shinya Iwasaki, Takuya Yanase, Akihiko Inamura, Etsuo Uchida, Hongbo Zheng, Qing Yang, Ke Wang, Atsushi Suzuki, Hodaka Kawahata

    Aquatic Geochemistry   26 ( 2 )   137 - 159   2020.6

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    Language:English   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

    Web of Science

  • Diversity of long-chain alkenone producers ̶Developments of temperature proxy in inland waters̶

    Hiroto Kajita, Hideto Nakamura

    Geochemistry   54 ( 2 )   79 - 96   2020.6

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

  • Genomic and geochemical identification of the long-chain alkenone producer in the estuarine Lake Takahoko, Japan: Implications for temperature reconstructions

    Hiroto Kajita, Hideto Nakamura, Naohiko Ohkouchi, Naomi Harada, Miyako Sato, Shun Tokioka, Hodaka Kawahata

    Organic Geochemistry   142   103980   2020.4

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    Language:English   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

    Web of Science

  • High time-resolution alkenone paleotemperature variations in Tokyo Bay during the Meghalayan: Implications for cold climates and social unrest in Japan

    Hiroto Kajita, Naomi Harada, Yusuke Yokoyama, Miyako Sato, Nanako Ogawa, Yosuke Miyairi, Chikako Sawada, Atsushi Suzuki, Hodaka Kawahata

    Quaternary Science Reviews   230   2020.2

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    Language:English   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

    Web of Science

    Scopus

  • Climate variations and Changes in Chinese history

    Hiroto Kajita

    The Archaeological Journal   723   32 - 33   2019.3

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    Language:Japanese   Publishing type:Research paper (scientific journal)   Kind of work:Single Work  

  • Extraordinary cold episodes during the mid-Holocene in the Yangtze delta: Interruption of the earliest rice cultivating civilization

    Hiroto Kajita, Hodaka Kawahata, Ke Wang, Hongbo Zheng, Shouye Yang, Naohiko Ohkouchi, Masayuki Utsunomiya, Bin Zhou, Bang Zheng

    Quaternary Science Reviews   201   418 - 428   2018.12

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    Language:English   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

    Web of Science

    Scopus

  • Paleo-climate reconstruction using corals from Kikai Island, Japan

    Hiroto Kajita, Atsuko Yamazaki, Saori Ito, Tsuyoshi Watanabe

    Kaiyo Monthly   60   55 - 62   2017.6

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    Language:Japanese   Publishing type:Part of collection (book)   Kind of work:Joint Work  

  • Holocene sea surface temperature variations recorded in corals from Kikai Island, Japan

    Hiroto Kajita, Atsuko Yamazaki, Takaaki Watanabe, Chung Che Wu, Chuan Chou Shen, Tsuyoshi Watanabe

    Geochemical Journal   51 ( 4 )   e9 - e14   2017

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    Language:English   Publishing type:Research paper (scientific journal)   Kind of work:Joint Work  

    Web of Science

    Scopus

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Review Papers

  • The advancement of alkenone paleothermometry: applications to coastal, lake, and subaerially exposed sediments

    Hiroto Kajita

    Geochemistry   55 ( 2 )   59 - 60   2021.6

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)   Kind of work:Single Work  

  • Application of the alkenone paleotemperature reconstruction in Lake Takahoko, Aomori

    Hiroto Kajita, Hideto Nakamura, Naohiko Ohkouchi, Naomi Harada, Miyako Sato, Shinji Ueda, Hodaka Kawahata

    Abstracts of Annual Meeting of the Geochemical Society of Japan   77   2021.1

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    Language:English   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)   Kind of work:Joint Work  

  • Alkenones synthesized by Isochrydaceae family haptophytes -Case studies in domestic lakes-

    Kajita Hiroto, Nakamura Hideto, Kawahata Hodaka

    Abstracts of Annual Meeting of the Geochemical Society of Japan   66 ( 0 )   48 - 48   2019.11

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    Language:Japanese   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)   Publisher:GEOCHEMICAL SOCIETY OF JAPAN   Kind of work:Joint Work  

  • Large cold events induced by El Nino episodes in Funka Bay, northern Japan

    Hodaka Kawahata, Yoshiki Hatta, Hiroto Kajita, Yuki Ota, Kenji Nishida, Masayuki Ikeda, Junko Habu

    Annual Meeting of the Geological Society of Japan   2018 ( 0 )   314 - 314   2018

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    Language:Japanese   Publishing type:Rapid communication, short report, research note, etc. (scientific journal)   Publisher:The Geological Society of Japan   Kind of work:Joint Work  

Media Coverage

  • 過去の気候変動を記録する藻類を青森県鷹架沼で発見! – 湖沼堆積物から湖水温を推定する

    2020.06

  • 関東の気温変化再現 東京湾堆積物を分析

    2020.03

  • 研究室の扉「水稲文明を滅ぼしたのは、、、」

    2019.01

  • 失われた長江新石器文明の謎 – 約4200年前の気候変動を海洋堆積物から復元する

    2018.12

  • 東大、約4400年前~3800年前に大規模かつ複数回の急激な気候寒冷化イベントの発生を発見

    2018.12