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OKondo, Yosuke*; Achouri, N. L.*; Al Falou, H.*; Atar, L.*; Aumann, T.*; Baba, Hidetada*; Boretzky, K.*; Caesar, C.*; Calvet, D.*; Chae, H.*; et al.
Nature, 620(7976), p.965 - 970, 2023/08
Times Cited Count：18 Percentile：95.53(Multidisciplinary Sciences)no abstracts in English
Yamada, Ryuji*; Kimura, Takashi*; Kariya, Yoshihiko*; Sano, Masaki*; Tsushima, Akane*; Li, Z.*; Nakatsuka, Takeshi*; Kokubu, Yoko; Inoue, Kimio*
Sabo Gakkai-Shi, 73(5), p.3 - 14, 2021/01
We discuss the applicability of dating methods for determining landslide chronologies in relation to the type of samples and the sampling location. Case studies are carried out with fossil wood samples buried in the colluvial soil of large-scale landslides occurred in two areas of the Japanese Alps region. Ages are determined by accelerator mass spectrometry radiocarbon dating and dendrochronological analysis using the oxygen isotope composition of tree ring cellulose. Most of ages for Dondokosawa rock avalanche are concordant with the period of AD 887 Ninna (Goki-Shichido) earthquake. Ages for Ohtsukigawa debris avalanche are not concentrated in a specific period. In order to obtain accurate age of large-scale landslide, utilizing buried large diameter tree trunk or branches with the good preservation condition has a lot of advantages because it allows us to compare the landslide chronology with historical records of heavy rainfall and large earthquakes.
Uesaka, Mitsuru*; Kobayashi, Hitoshi*; Kureta, Masatoshi; Nakatsuka, Shigehiro*; Nishimura, Kazuya*; Igashira, Masayuki*; Hori, Junichi*; Kiyanagi, Yoshiaki*; Tagi, Kazuhiro*; Seki, Toshichika*; et al.
Reviews of Accelerator Science and Technology, 8, p.181 - 207, 2015/00
We choose nuclear data and nuclear material inspection for energy application and nondestructive testing of explosive and hidden nuclear materials for security application. 90 keV electrostatic accelerators of deuterium are commercially available for nondestructive testing. For nuclear data measurement, electrostatic ion accelerators and L-band and S-band electron linear accelerators (linac) are used for the neutron source. Compact or mobile X-band electron linac neutron sources are under development. Compact proton linac neutron source is used for nondestructive testing especially water in solids. Several efforts for more neutron intensity using proton and deuteron accelerators are also introduced.
Hatae, Takaki; Naito, Osamu; Kitamura, Shigeru; Sakuma, Takeshi*; Hamano, Takashi*; Nakatsuka, Masahiro*; Yoshida, Hidetsugu*
Journal of the Korean Physical Society, 49, p.S160 - S164, 2006/12
no abstracts in English
Hatae, Takaki; Nakatsuka, Masahiro*; Yoshida, Hidetsugu*; Naito, Osamu; Kitamura, Shigeru; Sakuma, Takeshi*; Hamano, Takashi*; Tsukahara, Yoshimitsu
Proceedings of 29th European Physical Society Conference on Plasma Physics and Controlled Fusion, 4 Pages, 2002/00
no abstracts in English
Kokubu, Yoko; Hakozaki, Masataka*; Sakamoto, Minoru*; Li, Z.*; Nakatsuka, Takeshi*; Fujita, Natsuko
no journal, ,
no abstracts in English
Miyahara, Kaname; Nakatsuka, Noboru; Uchida, Masahiro; Shigeta, Naotaka; Ota, Kunio; Nohara, Tsuyoshi; Semba, Takeshi
no journal, ,
The results of five issues for safety research on radioactive waste from 2001 to 2005 introduced in the sectional committee of the safety research on radioactive waste. The five issues are as follows, (1) Study on a basic strategy for post-generic safety assessment, (2) Study on long-term stability for geological environment, (3) Methodology development for the characterization of crystalline rock, (4) Establishment of techniques for characterization of sedimentary formations, (5) Natural analogue study on geological environment.
Hatae, Takaki; Yatsuka, Eiichi; Yoshida, Hidetsugu*; Fujita, Hisanori*; Tsubakimoto, Koji*; Nakatsuka, Masahiro*; Yasuhara, Ryo*; Tojo, Hiroshi; Sakuma, Takeshi
no journal, ,
no abstracts in English
Hatae, Takaki; Kitamura, Shigeru; Sakuma, Takeshi; Hamano, Takashi; Tojo, Hiroshi; Yoshida, Hidetsugu*; Fujita, Hisanori*; Nakatsuka, Masahiro*; Narihara, Kazumichi*; Yamada, Ichihiro*; et al.
no journal, ,
Hakozaki, Masataka*; Sakamoto, Minoru*; Kokubu, Yoko; Fujita, Natsuko; Li, Z.*; Nakatsuka, Takeshi*
no journal, ,
The sacred tree, a large cedar tree, at the Zinmei Shrine in Mizunami City, Gifu Prefecture was collapsed by heavy rain. Using a part of the tree, we have started measuring its radiocarbon in order to obtain the basic data of calibration curve required for radiocarbon dating. In this presentation, we report the result of age determination of the tree.
