*kengo muroda¹, Shinji Nakaya^1,2, Mistunori Ishikawa¹, Harue Masuda³ (1.Department of Civil Engineering, Faculty of Engineering, Shinshu University, 2.Department of Water Environment and Civil Engineering, Faculty of Engineering, Shinshu University, 3.Department of Geosciences, Faculty of Science, Osaka City University)

Ryo Inoue¹, *Harue Masuda¹, Go Yonezawa², XuanLuang Truong³, Ki-Cheol Shin⁴ (1.Graduate school of science,Osaka City University, 2.Graduate school for Creative Cities,Osaka City University, 3.Hanoi University of Mining Geology, 4.Research Institute for Humanity and Nature)

*Nozomu Hirai¹, Selim Reza, Harue Masuda¹ (1.Osaka City university)

*Yusuke Murasaki¹, Harue Masuda⁴, Ryo Inoue⁴, Yusuke Sakamoto¹, Atsusi Marui³, Masahiko Ono³, Shinji Nakaya², Fumie Chioka⁴, Tsuyoshi Shintani⁴, Nozomu Hirai⁴, Syouma Yamano¹ (1.Osaka City University,Department geoscinces,Faculty of Science, 2.Department of Water Environment and Civil Engineering, Faculity of Engineering, Shinshu University, 3.National Institute of Advanced Industrial Science and technology, 4.Department of Geosciences, Faculity of Science, Osaka City University)

*Tsuyoshi Shintani¹, Kozue Nakanishi⁴, Harue Masuda¹, Masahiko Ono², Atsunao Marui², Tsuyoshi Ishikawa³, Kazuya Nagaishi⁵ (1.Graduate School of Science,Osaka University, 2.National Institute of Advanced Industrial Science and Technology, 3.Japan Agency for Marine-Earth Science and Technology, 4.Faculty of Science, Osaka City University, 5.Marin Works Japan)

*Yusuke Sakamoto¹, Harue Masuda¹, Akinori Takeuchi², Tsuyoshi Shintani¹ (1.Department of Geosciences, Faculty of Science, Osaka City University, 2.National Institute for Environmental studies)

*Emilie Even¹, Harue Masuda¹, Takafumi Hirata² (1.Osaka City University, 2.Kyoto University)

Haruka Yoshinishi¹, Shigeshi Fuchida², *Harue Masuda¹, Emilie EVEN¹ (1.Graduate School of science,Osaka City University, 2.Center for Global Environmental Research,National Institute for Environmental Studies)

*Akira Ijiri^1,2, Naotaka Tomioka¹, Harue Masuda³, Shigeyuki Wakaki¹, Masafumi MURAYAMA⁴, Fumio Inagaki^1,2 (1.Kochi Institute for Core Sample Research, Japan Agency for Marine Science and Technology (JAMSTEC), 2.Research and Development Center for Submarine Resources, JAMSTEC, 3.Graduate School of Science, Osaka City University, 4.Kochi university, Center for Advanced Marine Core Research)