About the Authors

Yoshio Takahashi

ytakaha@hiroshima-u.ac.jp

Affiliations Department of Earth and Planetary Science, The University of Tokyo, Hongo 7-3-1, Bukyo-ku, Tokyo, 113-8654, Japan, Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan

Kazuhiro Kondo

Affiliation Aisin Cosmos R&D Co., LTD., Kisarazu, Chiba, 292-0818, Japan

Asami Miyaji

Affiliation Department of Earth and Planetary Systems Science, Hiroshima University, Higashi-Hiroshima, Hiroshima, 739-8526, Japan

Yusuke Watanabe

Affiliation Department of Earth and Planetary Science, The University of Tokyo, Hongo 7-3-1, Bukyo-ku, Tokyo, 113-8654, Japan

Qiaohui Fan

Affiliation Department of Earth and Planetary Science, The University of Tokyo, Hongo 7-3-1, Bukyo-ku, Tokyo, 113-8654, Japan

Tetsuo Honma

Affiliation SPring-8, Japan Synchrotron Radiation Research Institute (JASRI), Sayo-cho, Hyogo, 679-5198, Japan

Kazuya Tanaka

Affiliation Institute for Sustainable Sciences and Development, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima, 739-8530, Japan

Competing Interests

One of the authors (KK) on this paper is employed by a commercial company, Aisin Cosmos R&D Co., LTD. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: YT KK. Performed the experiments: YT AM YW QF TH. Analyzed the data: YT AM YW KT. Wrote the paper: YT.