*Chunmao Zhu¹, Yugo Kanaya¹, Hisayuki Yoshikawa², Tomohisa Irino², Osamu Seki², Yasunori Tohjima³ (1.Japan Agency for Marine-Earth Science and Technology, 2.Hokkaido University, 3.National Institute for Environmental Studies)

*Mui Fa Alison Lee¹, Tomohisa Irino¹ (1.Faculty of Environmental Earth Science, Hokkaido University)

*Song Lu¹, Youhei Yamashita², Tomohisa Irino² (1.Graduate School of Environmental Science, Hokkaido University , 2.Faculty of Environmental Earth Science, Hokkaido University)

*Tomohisa Irino¹, Keisuke Hirai¹, Osamu Seki¹, James Hooper², Samuel Marx² (1.Hokkaido University, 2.University of Wollongong)

*Asako Suzuki¹, Ken Sawada², Satoshi Furota³, Yaeko Igarashi⁴, Tomohisa Irino⁵ (1.Graduate School of Science, Hokkaido University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3.Japan Agency for Marine-Earth Science and Technology, 4.Institute for Paleoenvironment of Northern Regions, 5.Faculty of Environmental Earth Science, Hokkaido University)

*Mui Fa Alison Lee¹, Tomohisa Irino¹ (1.Faculty of Environmental Earth Science, Hokkaido University)

*Song Lu¹, Youhei Yamashita², Tomohisa Irino² (1.Graduate School of Environmental Science, Hokkaido University , 2.Faculty of Environmental Earth Science, Hokkaido University)

*Tomohisa Irino¹, Keisuke Hirai¹, Osamu Seki¹, James Hooper², Samuel Marx² (1.Hokkaido University, 2.University of Wollongong)

*Asako Suzuki¹, Ken Sawada², Satoshi Furota³, Yaeko Igarashi⁴, Tomohisa Irino⁵ (1.Graduate School of Science, Hokkaido University, 2.Department of Earth and Planetary Sciences, Faculty of Science, Hokkaido University, 3.Japan Agency for Marine-Earth Science and Technology, 4.Institute for Paleoenvironment of Northern Regions, 5.Faculty of Environmental Earth Science, Hokkaido University)

*Tomohisa Irino¹, Liviu Giosan², Ryuji Tada³, Ken Ikehara⁴ (1.Faculty of Environmental Earth Science, Hokkaido University, 2.Woods Hole Oceanographic Institution, 3.Graduate School of Science, University of Tokyo, 4.Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology)

*Ryuji Tada¹, Tomohisa Irino², Arisa Seki³, Masafumi Murayama⁴, Kaz Mitake¹, Masayuki Ikeda⁵ (1.Department of Earth and Planetary Science, Graduate School of Science, The Univeristy of Tokyo, 2.Faculty of Environmental Earth Science, Hokkaido University, 3.Faculty of Science, Shinshu University, 4.Faculty of Agriculture and Marine Science, 5.Shizuoka University)

*Mutsumi Iizuka¹, Osamu Seki¹, Takuya Itaki², Tomohisa Irino¹, Minoru Ikehara⁴, Saiko Sugisaki², Masanobu Yamamoto¹, Keiji Horikawa⁵, Yuusuke Suganuma³ (1.Hokkaido university, 2.Geological Survey of Japan, 3.National Institute of Polar Research , 4.Center for Advanced Marine Core Research, Kochi University, 5.University of Toyama)

*Mutsumi Iizuka¹, Osamu Seki¹, Takuya Itaki², Tomohisa Irino¹, Minoru Ikehara⁴, Saiko Sugisaki², Masanobu Yamamoto¹, Keiji Horikawa⁵, Yuusuke Suganuma³ (1.Hokkaido university, 2.Geological Survey of Japan, 3.National Institute of Polar Research , 4.Center for Advanced Marine Core Research, Kochi University, 5.University of Toyama)

*Tomohisa Irino¹, Airi Maruyama¹, Ken Ikehara², Masanobu Yamamoto¹, Michinobu Kuwae³ (1.Graduate School of Environmental Science, Hokkaido University, 2.Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology, 3. Center for Marine Environmental Studies, Ehime University)

*Tomohisa Irino¹, Airi Maruyama¹, Ken Ikehara², Masanobu Yamamoto¹, Michinobu Kuwae³ (1.Graduate School of Environmental Science, Hokkaido University, 2.Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology, 3. Center for Marine Environmental Studies, Ehime University)