Kajita Hiroto

カジタヒロト | Kajita Hiroto

Affiliation and department：
Job title： Assistant Professor
Other affiliations (2)：

Japan Agency for Marine-Earth Science and Technology Biogeochemistry Research Center Invited researcher
National Institute of Advanced Industrial Science and Technology Stratigraphy and Tectonics Research Group Invited researcher

Homepage URL (1)： https://sites.google.com/view/kajita-porites/

Research keywords (3)：生物地球化学 , Biogeochemistry , Paleoclimatology&Paleoceanography

Research theme for competitive and other funds (16)：

2024 - 2029 地磁気逆転現象が気候・生態系に対して与えた影響の検証
2024 - 2027 南極氷床・海氷の融解を捉える生物地球化学的シグナルの検討
2023 - 2026 Aquatic ecosystem responses to climate and human-induced changes in the Late Holocene.
2024 - 2025 Clarification of underwater ruins of Lake Hibara and the volcanic disaster that caused the submergence of the lake
2022 - 2025 化石DNAとバイオマーカーの同時分析で解明する南極沿岸生態系の発達史

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Papers (18)：

Hiroto Kajita, Yusuke Suganuma, Yuki Haneda, Makoto Okada, Masanobu Yamamoto, Osamu Seki, Naohiko Ohkouchi. Seasonal Sea Surface Temperature Variations at the Northern Limit of the Kuroshio Current in Marine Isotope Stage 20-18. Geophysical Research Letters. 2025. 52. 3
Mukuto Morita, Hiroto Kajita, Atsushi Okazaki, Nanami Ueda, Koji Umeda, Etsuo Uchida, Hodaka Kawahata. Evaluation of carbon flux through groundwater and river water at the western foothills of Mt. Chokai. Geochemical Journal. 2024. 58. 6. 267-275
Kai Nils Nitzsche, Naoto F Ishikawa, Toshihiro Yoshimura, Hiroto Kajita, Hodaka Kawahata, Nanako O Ogawa, Hisami Suga, Naohiko Ohkouchi. Historical trend of polycyclic aromatic hydrocarbons in a sediment core from Osaka Bay during the Meghalayan. The Holocene. 2024. 34. 7. 860-869
Takeshige Ishiwa, Hirokazu Yamagata, Yusuke Suganuma, Daisuke Shibata, Hiroto Kajita, Toshihiro Maki. Development of under-ice topography survey method using a small-scaled Remotely Operated Vehicle (ROV). The Journal of the Geological Society of Japan. 2023. 129. 1. 567-571
Hiroto Kajita, Yuta Isaji, Rintaro Kato, Yoko Nishikura, Masafumi Murayama, Naohiko Ohkouchi, Shouye Yang, Hongbo Zheng, Ke Wang, Toshimichi Nakanishi, et al. Climatic change around the 4.2 ka event in coastal areas of the East China Sea and its potential influence on prehistoric Japanese people. Palaeogeography, Palaeoclimatology, Palaeoecology. 2023. 609. 111310. 111310-111310

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MISC (9)：

梶田展人, 関宰, 山本正伸, 大河内直彦, 岡田誠, 羽田裕貴, 菅沼悠介. 千葉複合セクションに記録された葉ワックス水素同位体比分析による地磁気逆転前後の水循環変化. 日本地球化学会第71回年会講演要旨集. 2024
梶田展人. 房総半島周辺の鮮新ー更新統におけるアルケノン古水温復元. 日本地質学会学術大会講演要旨集. 2024
梶田展人, 菅沼悠介, 工藤栄, 杉山慎, 大河内直彦. 東南極宗谷海岸沿岸およびシューマッハオアシスの陸水系に存在する脂肪酸の組成. 日本地質学会学術大会講演要旨集. 2023
梶田展人, 関宰, 山本正伸, 大河内直彦, 岡田誠, 羽田裕貴, 菅沼悠介. 千葉複合セクションのn-アルカン分析による海洋酸素同位体ステージ19の陸上気候・植生変動復元. 日本地球化学会第69回年会講演要旨集. 2022
Kai Nitzsche, Toshihiro Yoshimura, Naoto Ishikawa, Hiroto Kajita, Nanako Ogawa, Katz Suzuki, Naohiko Ohkouchi. Zinc stable isotopes as tracers for Zn pollution in sediment cores from historically polluted Lake Biwa and Osaka Bay. Goldschmidt2022 abstracts. 2022

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Lectures and oral presentations (41)：

137Cs年代測定法による年縞計測の評価:男鹿半島一ノ目潟を例に
(令和6年度東北地域災害科学研究集会 2024)
下総層群GS-UR-1 コアに記録された古東京湾の古水温変動
(第10回地球環境史学会年会 2024)
バイオマーカーによる安房層群安野層における後期鮮新世の表層海水温と気候の復元
(第10回地球環境史学会年会 2024)
μXRF とμXRD を用いた微小領域元素・鉱物組成分析に基づくラミナの形成メカニズムの考察
(第10回地球環境史学会年会 2024)
秋田県一ノ目潟における沈降粒子の季節性:年縞形成への示唆
(汽水域研究会2024年(第16回)秋田大会 2024)

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Education (3)：

2018 - 2021 The University of Tokyo Graduate school of Science Department in Earth and Planetary Science
2016 - 2018 The University of Tokyo Graduate school of Science Department of Earth and Planetary Sciece
2012 - 2016 Hokkaido University School of Science Department of Earth and Planetary Science

Professional career (1)：

Work history (4)：

2022/05 - 現在 Hirosaki University Faculty of Science and Technology Assistant Professor
2022/10 - 2023/03 JARE64 menmer
2021/04 - 2022/04 JSPS research Fellow PD(National Institute for Polar Research)
2018/04 - 2021/03 JSPS Research Fellow DC1(The University of Tokyo)

Committee career (1)：

Awards (6)：

2024/12 - 弘前大学学術特別賞(若手優秀論文賞)
2024/03 - 地球環境史学会 PEPS論文賞
2023/06 - 地球環境史学会奨励賞アルケノン古水温計を用いた過去の温暖期における気候復元
2021/03 - Atmosphere and Ocean Research Institute, the University of Tokyo Director's Award
2021/03 - Dean’s Award, Department of Earth and Planetary Science, the University of Tokyo

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Association Membership(s) (4)：

日本地質学会 , Paleo-sciences Society , Geochemical Society of Japan , Japan Geoscience Union

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