Iwata Naoyoshi

イワタナオヨシ | Iwata Naoyoshi

Affiliation and department：
Job title：准教授

Research field (3)： Disaster prevention engineering , Solid earth science , Space and planetary science

Research keywords (6)： Ar-Ar法 , K-Ar法 , 放射年代学 , Ar-Ar method , K-Ar method , Radiometric dating

Research theme for competitive and other funds (7)：

2015 - 2019 Search for cosmic rays related to supernova remnants in the past of 3 million years using muon induced cosmogenic nuclides in granite rocks at a deep underground
2012 - 2015 The observation of fissogenic and crustal noble gases anomaly associated with after the 3.11 Northeast Japan Earthquake and diserstar
2010 - 2012 K-Ar dating of volcanic rocks younger than 10 ka . toward understanding of eruptive history in Quaternary volcanoes
2010 - 2012 Aeromagnetic survey by small unmanned aerial vehicles and plate tectonics of Bransfield Basin in Antarctica
2009 - 2011 DEVELOPMENT OF DETECTION METHOD FOR SECULAR VARIATION OF COSMIC RAYS OVER THE PAST TEN MILLION YEARS USING COSMOGENIC NUCLEI BY NUON IN DEEP ROCK

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Papers (44)：

H. Sakurai, Y. Kurebayashi, Soichiro Suzuki, Kazuho Horiuchi, Y. Takahashi, N. Doshita, Satoshi Kikuchi, F. Tokanai, Naoyoshi Iwata, Y. Tajima, et al. Production rates of long-lived radionuclides Be-10 and Al-26 under direct muon-induced spallation in granite quartz and its implications for past high-energy cosmic ray fluxes. Physical Review D. 2024
Ko Hashizume, Akizumi Ishida, Ayano Chiba, Ryuji Okazaki, Kasumi Yogata, Toru Yada, Fumio Kitajima, Hisayoshi Yurimoto, Tomoki Nakamura, Takaaki Noguchi, et al. The Earth atmosphere-like bulk nitrogen isotope composition obtained by stepwise combustion analyses of Ryugu return samples. Meteoritics & Planetary Science. 2024
M.W. Broadley, D.J. Byrne, E. Füri, L. Zimmermann, B. Marty, R. Okazaki, T. Yada, F. Kitajima, S. Tachibana, K. Yogata, et al. The noble gas and nitrogen relationship between Ryugu and carbonaceous chondrites. Geochimica et Cosmochimica Acta. 2023. 345. 62-74
Ryuji Okazaki, Yayoi N Miura, Yoshinori Takano, Hirotaka Sawada, Kanako Sakamoto, Toru Yada, Keita Yamada, Shinsuke Kawagucci, Yohei Matsui, Ko Hashizume, et al. First asteroid gas sample delivered by the Hayabusa2 mission: A treasure box from Ryugu. Science advances. 2022. 8. 46. eabo7239
Ryuji Okazaki, Bernard Marty, Henner Busemann, Ko Hashizume, Jamie D. Gilmour, Alex Meshik, Toru Yada, Fumio Kitajima, Michael W. Broadley, David Byrne, et al. Noble gases and nitrogen in samples of asteroid Ryugu record its volatile sources and recent surface evolution. Science. 2022. 379. 6634. eabo0431

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MISC (43)：

Iwata, N, Sekimoto, S, Inagaki, M, Miura, Y.N, Okazaki, R. ⁴⁰Ar-³⁹Ar dating of extraterrestrial materials in KURNS. 2023. CO5-8
Ar dating of, rial materials in KURNS. ⁴⁰Ar-³⁹Ar dating of extraterrestrial materials in KURNS. KURNS Progress Report 2021. 2022. C05-10
Iwata, N, Sekimoto, S, Okazaki, R, Miura, Y. ⁴⁰Ar-³⁹Ar dating of extraterrestrial materials in KURNS. KURNS Progress Report 2020. 2021. CO5-11
Naoyoshi Iwata, Yutaka Takigami. ⁴⁰Ar-³⁹Ar dating of rocks from a deep geothermal research well of Kakkonda granite. 2020. PR0102
Naoyoshi Iwata, Mutsumu Ishii, Makoto Numakunai, Kazuo Saito. K-Ar dates of Banji-iwa Volcanic Rocks, northeastern Japan Arc. The abstracts 2020 online annual meeting of Japan Association of Mineralogical Sciences. 2020. R6-07

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Lectures and oral presentations (81)：

In situ measurement of Mars' atmospheric Ne by Mars Ice Mapper EDL
(2023)
High Resolution Step Pyrolysis Xenon Isotopic Analysis Of Ryugu Material Returned By Hayabusa2
(85th Annual Meeting of The Meteoritical Society)
Development of a method to separate Ne from Ar using a polyimide sheet for future planetary missions
(2022)
Mars Atmospheric Neon Probes Mantle Volatile Content and Early Surface Environment
(53rd Lunar and Planetary Science Conference 2022)
Exposure conditions of sample collected on Ryugu’s two touchdown sites determined by cosmogenic nuclides 10Be and 26Al
(53rd Lunar and Planetary Science Conference 2022)

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Works (4)：

極域から見た超大陸の形成と分裂のダイナミクス
2007 - 2010
リーセルラルセン山地域ナピア岩体の放射年代・岩石磁気・地球電磁気の研究
2005 -
第四紀火山岩年代標準試料の作成
2003 - 2004
レーザー加熱40Ar-39Ar年代測定による東北地方の火成岩の年代測定
1999 - 2000

Education (3)：

1993 - 1998 The University of Tokyo School of Science Graduate Department of Geology
1991 - 1993 Yamagata University Graduate School of Science Department of Earth Sciences
1987 - 1991 Yamagata University Faculty of Science Department of Earth Sciences

Work history (5)：

2017/04 - 現在 Faculty of Science, Yamagata University Associate Professor
2014/01 - 2017/03 Faculty of Science, Yamagata University Department of Earth and Environmental Sciences Associate Professor
2002/06 - 2013/12 Faculty of Science, Yamagata University Department of Earth and Environmental Sciences Lecturer
1998/04 - 2002/05 Faculty of Science, Yamagata University Department of Earth and Environmental Sciences Assistant Professor
1999/07 - 2001/03 41st Japanese Antarctic Research Expedition Wintering party Member of JARE

Awards (2)：

2016/03 - 山形大学理学部 2015年度山形大学理学部ベストティーチャー賞
2009/07 - Yamagata Univ. Best Teacher Award -General Education

Association Membership(s) (7)：

THE MASS SPECTROMETRY SOCIETY OF JAPAN , Japan Association of Mineralogical Sciences , プラズマ分光分析研究会 , Geochemical Society , 日本地質学会 , 日本火山学会 , 日本地球化学会

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