*Zarina Bikmullina¹, Masanobu Yamamoto¹ (1.Hokkaido University)

*TAKUYA GONDA¹, Masanobu Yamamoto¹, Hideto Nakamura¹, Masaaki Kanahara², Takayuki Omori³, Tetsuro Udatsu⁴, Shin-ichi Nakamura⁵, Guoping Sun⁶ (1.Hokkaido University, 2.Nara University of Education, 3.The University of Tokyo, 4.Miyazaki University, 5.Kanazawa University, 6.Zhejiang Provincial Institute of Cultural Relics and Archaeology)

*Kenta Suzuki¹, Masanobu Yamamoto², Osamu Seki² (1.Chiba Institute of Technology , 2.Hokkaido University)

*Erick Naim¹, Masanobu Yamamoto¹ (1.Graduate School of Environmental Science, Hokkaido Univ.)

*Ru-Yun Tung¹, Pierrick Fenies¹, Masanobu Yamamoto², Jens Hefter³, Yoshimi Kubota⁴, Chuan-Chou Shen^5,6, Sze Ling Ho¹ (1.Institute of Oceanography, National Taiwan University, Taiwan, 2.Graduate School of Earth and Environmental Science, Hokkaido University, Japan, 3.Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research, Germany, 4.Department of Geology and Paleontology, National Museum of Nature and Science, Japan, 5.High-Precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taiwan, 6.Research Center for Future Earth, National Taiwan University, Taiwan)

*Masanobu Yamamoto¹ (1.Faculty of Environmental Earth Science, Hokkaido University)

*Mutusmi Iizuka¹, Osamu Seki², David J Wilson³, Yusuke Suganuma⁴, Keiji Horikawa⁵, Tina van de Flierdt⁶, Minoru Ikehara⁷, Takuya Itaki¹, Tomohisa Irino², Masanobu Yamamoto², Motohiro Hirabayashi⁴, Hiroyuki Matsuzaki⁸, Saiko Sugisaki¹, Ryosuke Makabe⁴, Motoha Ojima⁴, Shigeru Aoki² (1.The National Institute of Advanced Industrial Science and Technology, 2.Hokkaido University, 3.University College London, 4.National Institute of Polar Research, 5.University of Toyama, 6.Imperial College London, London, 7.Kochi University, 8.The University of Tokyo)