*Yongsheng HUANG¹, Takayuki Nakatani¹, Sando Sawa¹, Michihiko Nakamura¹, Catherine McCammon² (1.Graduate School of Science, Tohoku University, 2.Bayerisches Geoinstitut, University of Bayreuth)

*Naoko Takahashi^1,2, Tatsuki Tsujimori^1,3, Seiji Kamada^1,4, Michihiko Nakamura¹ (1.Graduate School of Science, Tohoku University, 2.Graduate School of Science, The University of Tokyo, 3.Center of Northeast Asian Studies, Tohoku University, 4.Frontier Research Institute for Interdisciplinary Sciences, Tohoku University)

*Wakana Fujita¹, Michihiko Nakamura¹ (1.Graduate School of Science, Tohoku University)

*Kenichiro Tani¹, Osamu Ishizuka², Hiroki Minami⁶, Teruki Oikawa², Hajime Katayama², Yoshiaki Suzuki², Taketo Shimano³, Masashi NAGAI⁴, Fukashi Maeno⁵, Michihiko Nakamura⁷, Naoto Jimi⁸, Takashi Sano¹ (1.National Museum of Nature and Science, 2.National Institute of Advanced Industrial Science and Technology, 3.Tokoha University, 4.National Research Institute for Earth Science and Disaster Prevention, 5.University of Tokyo, 6.Japan Coast Guard Academy, 7.Tohoku University, 8.Nagoya University)

*Michihiko Nakamura¹, Ryosuke Sakurai², Natsuko Sekiya³ (1.Department of Earth Science, Graduate School of Science, Tohoku University, 2.Department of Earth and Planetary Science, School of Science, The University of Tokyo, 3.Department of Earth Science, Faculty of Science, Tohoku University)