Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Motonari Ohyama"'
Autor:
Mirei Takeyama, Toru Moriya, Hisako Saitoh, Hiroko Miyahara, Fusa Miyake, Motonari Ohyama, Rimi Sato, Rie Shitara, Hirohisa Sakurai, Fuyuki Tokanai
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 538:30-35
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f920ba73b037d1c377bbcc1af183c077
https://doi.org/10.1016/j.nimb.2023.01.021
https://doi.org/10.1016/j.nimb.2023.01.021
Autor:
Hiroko Miyahara, Fuyuki Tokanai, Toru Moriya, Mirei Takeyama, Hirohisa Sakurai, Motonari Ohyama, Kazuho Horiuchi, Hideyuki Hotta
Publikováno v:
Geophysical Research Letters. 49
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::397c48d0ccdaeee856ad87943a4d6794
https://doi.org/10.1029/2021gl097201
https://doi.org/10.1029/2021gl097201
Autor:
Kimiaki Masuda, Fuyuki Tokanai, Minoru Sakamoto, Kazuho Horiuchi, Toru Moriya, Motonari Ohyama, Hiroko Miyahara, Takumi Mitsutani, Fusa Miyake, Hirohisa Sakurai
Publikováno v:
Scientific Reports, Vol 10, Iss 1, Pp 1-7 (2020)
Scientific Reports
Scientific Reports
Annual rings record the intensity of cosmic rays (CRs) that had entered into the Earth’s atmosphere. Several rapid 14C increases in the past, such as the 775 CE and 994CE 14C spikes, have been reported to originate from extreme solar proton events
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6715678282fb6b841ced5d9ea0f0d880
http://link.springer.com/article/10.1038/s41598-019-57273-2
http://link.springer.com/article/10.1038/s41598-019-57273-2
Autor:
Masataka Hakozaki, Mirei Takeyama, Fuyuki Tokanai, Hiroko Miyahara, Hirohisa Sakurai, Motonari Ohyama, Toru Moriya
Publikováno v:
Radiocarbon. 61:1749-1754
Proxy-based observations of solar activity in the past have revealed long-term variations, such as the Gleissberg cycle (~88 yr), de Vries cycle (~200 yr), and the Hallstatt cycle (~2000 yr). Such long-term variations of solar activity sometimes caus
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cbab7c619db125c6bf345d4e7d50ddc4
https://doi.org/10.1017/rdc.2019.123
https://doi.org/10.1017/rdc.2019.123
Publikováno v:
Mokuzai Gakkaishi. 65:102-109
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f22f2c66887ef4943b3a244b85d594f
https://doi.org/10.2488/jwrs.65.102
https://doi.org/10.2488/jwrs.65.102
Autor:
Kohei Nozawa, Tadashi Shiraishi, Hiroko Miyahara, Mirei Takeyama, Fuyuki Tokanai, Toru Moriya, Hirohisa Sakurai, Masashi Hirota, Motonari Ohyama, Toyoharu Umebayashi, Satoshi Ito, Teiko Toyoguchi, Shigeru Itoh
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 439:94-99
An accelerator mass spectrometry (AMS) system and an automated graphitization line were installed at Yamagata University (YU) in 2009. Approximately 2000 samples are measured per year using the YU-AMS system. The long-term stability of the system was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3efea875b9d1ede7b7048c1f99244a59
https://doi.org/10.1016/j.nimb.2018.11.004
https://doi.org/10.1016/j.nimb.2018.11.004
Autor:
Toru Moriya, Hiroko Miyahara, Mirei Takeyama, Fuyuki Tokanai, Yasushi Okada, Hisako Saitoh, Motonari Ohyama, Toyoharu Umebayashi, Hirohisa Sakurai
Publikováno v:
Proceedings of 13th International Conference on Nucleus-Nucleus Collisions.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::83cb753de9d087dc70c0d0ed2ebbd56e
https://doi.org/10.7566/jpscp.32.010095
https://doi.org/10.7566/jpscp.32.010095
Autor:
Motonari Ohyama, Hiroko Miyahara, Stephen P Obrochta, Wataru Sakashita, Takahiro Aze, Yusuke Yokoyama, Hitoshi Yonenobu
Publikováno v:
Geochemistry, Geophysics, Geosystems. 19:3520-3528
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::455e6e0d26a1fb64a64cb891bf9fcc60
https://doi.org/10.1029/2018gc007634
https://doi.org/10.1029/2018gc007634
Autor:
Keiji Takemura, Hitoshi Yonenobu, Hiroko Miyahara, Wataru Sakashita, Takeshi Nakatsuka, Motonari Ohyama, Yusuke Yokoyama, Yasuharu Hoshino, Takahiro Aze
Publikováno v:
Quaternary International. 455:1-7
The East Asian summer monsoon is an important part of the Earth's climate system that is characterized by variations in the strength and expansion of the summer rain band. Rainfall reconstructions in China have revealed changing patterns of rainfall
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c2d4aaffc2e645adfe7896a2db2cdfcf
https://doi.org/10.1016/j.quaint.2017.06.020
https://doi.org/10.1016/j.quaint.2017.06.020