Yamamoto Yuhji

ヤマモトユウジ | Yamamoto Yuhji

Affiliation and department：
Job title： Professor
Other affiliations (1)：

Kochi University Marine Core Research Institute (MaCRI) Professor

Research field (1)： Solid earth science

Research keywords (4)：環境磁気学 , 岩石磁気学 , 古地磁気学 , Geomagnetic paleointensity

Research theme for competitive and other funds (34)：

2024 - 2028 考古地磁気年代推定法のフロンティアの開拓:台湾・ベトナムへの展開
2024 - 2028 The History of Trench Earthquakes Revealed by Paleomagnetic Dating Method
2024 - 2028 Determination of stress change in the vicinity of the Tohoku earthquake source fault using core samples retrieved by D/V Chikyu
2022 - 2026 Clarification of underwater ruins of Lake Hibara and the volcanic disaster that caused the submergence of the lake
2024 - 2026 (英語)Elucidation of the Environmental Conditions for Catastrophic Ground Hazards in Coastal Areas: Through the Investigation of the Submerged Ruins in Lake Biwa

2022 - 2025 Does the Sea Inhibit Pyroclastic Flow Travelling? Constraints from the Comparison of Aso-4 Pyroclastic Flow Distribution and Sea Area, and the Deposition Temperature.

2019 - 2025 逆転頻度が低いほど地磁気強度は大きくなるか?-アイスランド溶岩からの検証

2021 - 2025 Reconstruction of geomagnetic field and its influence on history of the Earth and life using magnetic microscopy around the formation of inner core

2021 - 2024 考古学領域への「磁性分析法」の導入と開発-土器の新たな年代決定・産地同定の可能性

2021 - 2024 Establishing a standard curve for Holocene geomagnetic variations around Japan

2020 - 2024 考古地磁気年代推定法の東アジアへの展開:過去3500年間の新たな連続指標の確立

2020 - 2023 Changes in the environments and biological communities revealed from the sediment core of Uranouchi Inlet Bay, Kochi during Anthropocene

2020 - 2023 ハイブリッド磁化率計:細粒磁性粒子を対象とした新しい多機能磁化率計の開発と応用

2019 - 2023 Recovery of high-resolution paleomagnetic intensity records from marine sediments in a reduced condition

2018 - 2021 磁性細菌による自然残留磁化-再現実験と天然試料分析から古地磁気記録の信頼性に迫る

2016 - 2020 Dating ruins with a new indicator: establishing secular variation curves of archaeomagnetic direction and intensity

2016 - 2020 Investigating long-term variation in intensity of the paleomagnetic field during a period of low reversal frequency - new constraint on the outer core process

2015 - 2020 Seismic and geo-electromagnetic observations of core and mantle

2016 - 2019 Study on long-term geomagnetic field variations during the last 10 million years

2016 - 2019 Estimation of historical record of Nankai Earthquake from the tradition of the submerged village "Kuroda-gori"

2015 - 2019 Investigation of new samples for paleomagnetic field strength research: volcanic glass in marine sediments

2015 - 2018 Measurements and applications of dynamic magnetic susceptibility

2013 - 2017 Advance of paleo- and rock magnetism by unraveling roles of biogenic magnetite

2013 - 2017 Pioneering research on past magnetic field of the Earth and planets by using SQUID microscope

2013 - 2017 Stress state in the vicinity of the plate boundary fault ruptures during the 2011 Tohoku earthquake

2014 - 2016 Estimation of subsidence records and earthquake damages of Nankai earthquakes from the investigation of structures and objects on the seafloor along the Kochi coastline.

2012 - 2015 Spectroscopy of magnetic susceptibility: Development and application

2011 - 2015 Further development of the microwave demagnetization and magnetization system

2010 - 2012 Geomagnetic paleointensity variations during the last 40 m.y.: Possible relationship between polarity reversal frequency and paleointensity

2009 - 2011 Basic study for renovation of archeomagnetism in Japan

2009 - 2011 Single crystal growth of Ce-T-Al(T=transition metals) and development of physical property measurements by GM cryocooler

2009 - 2010 Design and construction of a microwave magnetization/demagnetization system for geomagnetic paleointensity determination

2007 - 2008 Towards a new view of the geomagnetic field intensity variation-paleointensity measurements from the Icelandic lavas

2003 - 2005 新しい絶対古地磁気強度測定法の適用による過去500万年間の地球磁場変動の解明

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Papers (105)：

Takeshi HASEGAWA, Chie Kusu, Makoto Okada, Aoi Hiratsuka, Kuniaki Nishiki, Yuki Sato, Masaru Koshigai, Takuya Matsuzaki, Yuhji Yamamoto. Application of a recently developed method of oriented drill coring to accumulative tephra layers: identification of the Matuyama-Brunhes geomagnetic reversal in Akan caldera-forming eruption deposits. Earth, Planets and Space. 2024
Manuel Calvo-Rathert, Eva Vernet, Josep M Parés, Vicente Soler, Elisa-María Sánchez-Moreno, María-Felicidad Bógalo, Ángel Carrancho, Yuhji Yamamoto, Lidia Rodríguez-Méndez. Reliability of the paleomagnetic signal recorded in a lava flow erupted on 4 December 2021 in La Palma (Canary Islands, Spain). Geophysical Journal International. 2024
Kaixian Qi, Shuhui Cai, Huafeng Qin, Yuhji Yamamoto, Chenglong Deng, Yongxin Pan, Xin Cheng, Hanning Wu, Rixiang Zhu. The Culprit of Bias for Paleointensity Estimation in the Shaw-Type Protocol and an Innovative Calculation Method. Geophysical Research Letters. 2024. 51. 14
Kuniyuki Furukawa, Tatsuo Kanamaru, Kenichiro Tani, Noriko Kawamura, Jun Shibuya, Yuhji Yamamoto. Advancing seafloor sampling using submersibles and remotely operated vehicles: The cross-line laser orientation method. Tectonophysics. 2024. 883. 230389-230389
Hyeon-Seon Ahn, Youn Soo Lee, Yuhji Yamamoto. New absolute paleomagnetic intensity data from Cenozoic basalts of Northeast China and exploring rock-magnetic parameters for efficient sample preselection on the Tsunakawa-Shaw paleointensity method. Earth, Planets and Space. 2024. 76. 1

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MISC (20)：

浦本豪一郎, CHENG Yu-Huang, DONG Jiang, HSU Feng-Hsin, JEONG Eun Je, LEE Sojung, PARK Kwangyu, SHAN Xin, YUN Aryon, ZHANG Yuying, et al. New international outreach activity “Kochi Core School for Asian young scientists” at Kochi Core Center: Sedimentary characteristic of a Quaternary core in the Tosa Basin, off Kochi, northwestern Pacific. 日本地球惑星科学連合大会予稿集(Web). 2021. 2021
政岡浩平, 諸野祐樹, 富岡尚敬, 浦本豪一郎, 山本裕二, 大野正夫. Examination of the properties of remanent magnetization carried by magnetotactic bacteria in the early stages of sediment formation; example of mixed system with magnetic particles of inorganic origin. 日本地球惑星科学連合大会予稿集(Web). 2021. 2021
濱田洋平, 谷川亘, 山本裕二, 浦本豪一郎, 村山雅史, 廣瀬丈洋, 多田井修, 多田井修, 田中幸記, 尾嵜大真, et al. Historical natural disasters that remain in the stone pillars on the seafloor at Tosashimizu city, Japan. 日本地球惑星科学連合大会予稿集(Web). 2020. 2020
浦本豪一郎, 松井浩紀, 新井和乃, 西田尚央, 朝日博史, 久保雄介, 藤内智士, 谷川亘, 氏家由利香, 山本裕二, et al. Kochi Core School for Asian Young Scientists at Kochi Core Center: new international outreach activity in marine sediment core and related sciences. 日本地球惑星科学連合大会予稿集(Web). 2020. 2020
谷川亘, 徳山英一, 山本裕二, 村山雅史, 田中幸記, 井尻暁, 星野辰彦. Underwater geoarchaeological research at the coastal area of Kochi prefecture to reveal the traditional tale of “Kurodagori“. 日本地球惑星科学連合大会予稿集(Web). 2020. 2020

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Education (3)：

1999 - 2002 東京工業大学大学院理工学研究科地球惑星科学専攻
1997 - 1999 東京工業大学大学院理工学研究科地球惑星科学専攻
1993 - 1997 Tokyo Institute of Technology School of Science

Work history (11)：

2023/04 - 現在 Kochi University
2018/04 - 2023/03 Kochi University Research and Education Faculty, Multidisciplinary Science Cluster Interdisciplinary Science Unit
2017/04/01 - 2018/03/31 高知大学教育研究部自然科学系理学部門(海洋コア総合研究センター専任) 教授
2015/05/01 - 2017/03/31 高知大学教育研究部自然科学系理学部門(海洋コア総合研究センター専任) 准教授
2008/04/01 - 2015/04/30 高知大学教育研究部自然科学系理学部門(海洋コア総合研究センター専任) 助教

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Committee career (9)：

2021/04 - 2023/03 地球電磁気・地球惑星圏学会第31期運営委員 (庶務/将来構想/助成担当)
2019/04 - 2021/03 地球電磁気・地球惑星圏学会第30期運営委員 (秋学会担当)
2017/04/01 - 2019/03/31 地球電磁気・地球惑星圏学会第29期運営委員 (学生発表賞/学会将来構想WG担当)
2015 - 地球電磁気・地球惑星圏学会第138回講演会学生発表賞審査員(第1分野)
2013 - 地球電磁気・地球惑星圏学会第134回総会・講演会(高知大会) LOC委員

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Awards (2)：

2018/11/17 - 地球環境史学会地球環境史学会貢献賞古地磁気強度変動史の解明と古地磁気年代モデルによる地球環境史解明の促進
2007/09/30 - 地球電磁気・地球惑星圏学会大林奨励賞絶対古地磁気強度測定の信頼性と過去5百万年間の平均地磁気双極子モーメントの研究

Association Membership(s) (4)：

地球環境史学会 , 日本地球惑星科学連合 , American Geophysical Union , 地球電磁気・地球惑星圏学会

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