Papers - KAJITA HIROTO
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Biogeochemical Cycling of Carbon through Groundwater and River Water at the Western Foothills of Mt. Chokai
Mukuto Morita, Hiroto Kajita, Atsushi Okazaki, Nanami Ueda, Koji Umeda, Etsuo Uchida, Kyoko Yamaoka, Hodaka Kawahata
Abstracts of Annual Meeting of the Geochemical Society of Japan 72 ( 0 ) 51 2025.12
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Lake Sediment Core Investigations and Proxy Exploration for Reconstructing Permafrost Dynamics: Examples from Lakes in Alaska and the Mongolian Plateau
Hiroto Kajita, Masao Uchida, Go Iwahana, Nagayoshi Katsuta, Davaadorj Davaasuren
Abstracts of Annual Meeting of the Geochemical Society of Japan 72 ( 0 ) 100 2025.12
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DNA Metabarcoding Focusing on Eukaryote Communities on Langhovde Glacier, East Antarctica
Hiroto Kajita, Ken Kondo, Shin Sugiyama, Yasuhide Nakamura, Sakae Kudoh, Koji Umeda
Environmental Microbiology Reports 17 ( 4 ) e70117 2025.7
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Seasonal Sea Surface Temperature Variations at the Northern Limit of the Kuroshio Current in Marine Isotope Stage 20–18
Hiroto Kajita, Yusuke Suganuma, Yuki Haneda, Makoto Okada, Masanobu Yamamoto, Osamu Seki, Naohiko Ohkouchi
Geophysical Research Letters 52 ( 3 ) 2025.2
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Characteristics and paleoenvironmental significance of CT images of sediment cores from the Antarctic coastal region
Ishiwa Takeshige, Suganuma Yusuke, Kajita Hiroto, Shibata Daisuke, Katsuki Kota, Kawamata Moto, Ikehara Minoru
Annual Meeting of the Geological Society of Japan 2025 ( 0 ) 318 2025
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Evaluation of carbon flux through groundwater and river water at the western foothills of Mt. Chokai
Morita Mukuto, Kajita Hiroto, Okazaki Atsushi, Ueda Nanami, Umeda Koji, Uchida Etsuo, Kawahata Hodaka
GEOCHEMICAL JOURNAL 58 ( 6 ) 267 - 275 2024.11
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Historical trend of polycyclic aromatic hydrocarbons in a sediment core from Osaka Bay during the Meghalayan
Kai Nils Nitzsche, Naoto F Ishikawa, Toshihiro Yoshimura, Hiroto Kajita, Hodaka Kawahata, Nanako O Ogawa, Hisami Suga, Naohiko Ohkouchi
The Holocene 34 ( 7 ) 860 - 869 2024.3
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Correlation of event deposit layers interbedded with the annually laminated sediments in Lake Ichinome-gata, Oga Peninsula.
Nagata Atsuki, Kajita Hiroto, Ando Takuto, Minowa Masahiro, Umeda Koji
Annual Meeting of the Geological Society of Japan 2024 ( 0 ) 272 2024
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Water circulation changes at the geomagnetic reversal event based on leaf wax hydrogen isotope ratio analysis recorded in the Chiba composite section
Hiroto Kajita, Osamu Seki, Masanobu Yamamoto, Naohiko Ohkouchi, Makoto Okada, Yuki Haneda, Yusuke Suganuma
Abstracts of Annual Meeting of the Geochemical Society of Japan 71 ( 0 ) 109 2024
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Development of under-ice topography survey method using a small-scaled Remotely Operated Vehicle (ROV)
Ishiwa Takeshige, Yamagata Hirokazu, Suganuma Yusuke, Shibata Daisuke, Kajita Hiroto, Maki Toshihiro
The Journal of the Geological Society of Japan 129 ( 1 ) 567 - 571 2023.11
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Climatic change around the 4.2 ka event in coastal areas of the East China Sea and its potential influence on prehistoric Japanese people
Hiroto Kajita, Yuta Isaji, Rintaro Kato, Yoko Nishikura, Masafumi Murayama, Naohiko Ohkouchi, Shouye Yang, Hongbo Zheng, Ke Wang, Toshimichi Nakanishi, Takenori Sasak, Ayumi Maeda, Atsushi Suzuki, Toshiro Yamanaka, Hodaka Kawahata
Palaeogeography, Palaeoclimatology, Palaeoecology 609 ( 111310 ) 111310 - 111310 2023.1
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[Invited] Alkenone paleotemperature reconstructions in the Plio-Pleistocene sedimentary sequence around the Boso Peninsula.
Kajita Hiroto
Annual Meeting of the Geological Society of Japan 2023 ( 0 ) 178 2023
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Metal contamination in a sediment core from Osaka Bay during the last 400 years
Kai Nils Nitzsche, Toshihiro Yoshimura, Naoto F. Ishikawa, Hiroto Kajita, Hodaka Kawahata, Nanako O. Ogawa, Katsuhiko Suzuki, Yusuke Yokoyama, Naohiko Ohkouchi
Progress in Earth and Planetary Science 9 ( 1 ) 2022.10
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Long-chain alkenones in the Shimosa Group reveal palaeotemperatures of the Pleistocene interglacial Palaeo-Tokyo Bays
Hiroto Kajita, Tsutomu Nakazawa, Masayuki Utsunomiya, Naohiko Ohkouchi, Miyako Sato, Naomi Harada, Hodaka Kawahata
Progress in Earth and Planetary Science 9 ( 1 ) 2022.7
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Climatic and vegetation changes in MIS 19 indicated by n-alkane analysis of the Chiba Composite Section
Kajita Hiroto, Seki Osamu, Yamamoto Masanobu, Ohkouchi Naohiko, Makoto Okada, Haneda Yuki, Suganuma Yusuke
Abstracts of Annual Meeting of the Geochemical Society of Japan 69 ( 0 ) 153 2022
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Fatty acid composition in the terrestrial and aquatic systems of the Soya Coast and the Schirmacher Oasis, East Antarctica.
Kajita Hiroto, Suganuma Yusuke, Kudoh Sakae, Sugiyama Shin, Ohkouchi Naohiko
Annual Meeting of the Geological Society of Japan 2022 ( 0 ) 320 2022
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Biomarkers in the rock outcrop of the Kazusa Group reveal palaeoenvironments of the Kuroshio region (Jul, 10.1038/s43247-021-00154-2, 2021)
Kajita, H; Maeda, A; Utsunomiya, M; Yoshimura, T; Ohkouchi, N; Suzuki, A; Kawahata, H
COMMUNICATIONS EARTH & ENVIRONMENT 2 ( 1 ) 2021.7
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The advancement of alkenone paleothermometry: applications to coastal, lake, and subaerially exposed sediments
55 ( 2 ) 59 - 60 2021.6
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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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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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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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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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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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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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Climate variations and Changes in Chinese history
Hiroto Kajita
The Archaeological Journal 723 32 - 33 2019.3
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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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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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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