Tim Druitt¹, Steffen Kutterolf ², Thomas A. Ronge ³, Christian Hübscher ⁴, Paraskevi Nomikou⁵, Jonas Preine ⁴, Ralf Gertisser ⁶, Jens Karstens ², Jörg Keller⁷, Olga Koukousioura ⁸, Michael Manga⁹, Abigail Metcalfe¹, Molly McCanta¹⁰, *Iona McIntosh¹¹, Katharina Pank², Adam Woodhouse¹², Sarah Beethe¹³, Carole Berthod¹⁴, Shun Chiyonobu¹⁵, Hehe Chen¹⁶, Acacia Clark¹⁷, Susan DeBari¹⁸, Raymond Johnston¹⁹, Ally Peccia²⁰, Yuzuru Yamamoto²¹, Alexis Bernard²², Tatiana Fernandez Perez ²³, Christopher Jones²⁴, Kumar Batuk Joshi²⁵, Günther Kletetschka²⁶, Xiaohui Li ²⁷, Antony Morris²⁸, Paraskevi Polymenakou ²⁹, Masako Tominaga³⁰, Dimitrios Papanikolaou⁵, Kuo-Lung Wang³¹, Hao-Yang Lee³¹ (1.University Clermont-Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, Clermont-Ferrand, France, 2.GEOMAR Helmholtz Centre for Ocean ResearchKiel, Wischhofstrasse 1-3, D-24148 Kiel, Germany, 3.International Ocean Discovery Program, Texas A&M University, College Station, TX 77845, USA, 4.Institute of Geophysics, University of Hamburg, Bundesstrasse 55, D-20146 Hamburg, Germany, 5.Department of Geology and Geoenvironment, National and Kapodistrian University of Athens, 15784 Athens, Greece, 6.School of Geography, Geology and the Environment, Keele University, Keele, Staffordshire ST5 5BG, UK, 7.Institut für Geo- und Umweltnaturwissenschaften, Mineralogie - Petrologie, Albertstraße 23b, 79104 Freiburg, Germany, 8.School of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece, 9.Department of Earth and Planetary Science, University of California, Berkeley, CA 94720, USA, 10.Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, TN 37996-1526, USA, 11.Japan Agency for Marine-Earth Science and Technology, 2-15 Natsushima-cho, Yokosuka, Kanagawa 237-0061, Japan, 12.Institute for Geophysics, University of Texas, J.J. Pickle Research Campus, Bldg. 196, Austin, TX 78758, USA, 13.College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR 97333, USA, 14.Institut De Physique Du Globe De Paris, Centre National de la Recherche Scientifique (CNRS), 75005 Paris, France, 15.Faculty of International Resource Sciences, Akita University, Akita Prefecture, Akita 0108502, Japan, 16.School of Ocean Sciences, China University of Geosciences, Haidan District, 100083 Beijing, China, 17.School of Natural Sciences/CODES, University of Tasmania, Hobart 7005, Australia, 18.Geology Department, Western Washington University, Bellingham, WA 98225, USA, 19.School of Geosciences, University of South Florida, Tampa, FL33620, USA, 20.Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA, 21.Graduate School of Science, Kobe University, 1-1 Rokkodaicho, Nada-ku, Kobe, Hyogo 657-8501, Japan, 22.Laboratoire des Fluides Complexes et leurs Réservoirs, Université de Pau et des Pays de l’Adour, F-64000 Pau, France, 23.Department of Geology, Kent State University, 221 McGilvrey Hall, 325 S Lincoln Street, Kent, OH 44242, USA, 24.Department of Earth and Planetary Sciences, University of California, Riverside, CA 92506, USA, 25.Solid Earth Research Group, National Centre for Earth Science Studies, Thiruvananthapuram, Kerala 695011, India, 26.Geophysical Institute, University of Alaska Fairbanks, 2156 Koyukuk Drive, Fairbanks, Alaska 99775, USA, 27.Key Laboratory of Submarine Geoscience and Prospecting Techniques, Ocean University of China, Qingdao, China, 28.School of Geography, Earth and Environmental Sciences, Plymouth University, Drake Circus, Plymouth PL4 8AA, UK, 29.Institute of Marine Biology, Biotechnology and Aquaculture, Hellenic Centre for Marine Research, Heraklion, Greece, 30.Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA, 31.Institute of Earth Sciences, Academia Sinica, Taipei 11529, Taiwan)

*Akito Tsutsumi¹, Keigo Tashiro¹, Kasai Yuki¹, Chengrui Chang³, Chao Huang², Gonghui Wang², Yuzuru Yamamoto⁴ (1.Graduate School of Science, Kyoto University, 2.Disaster Prevention Research Institute, Kyoto University, 3.Graduate School of Science, University of Tokyo, 4.Graduate School of Science, Kobe University)

*Yuki Kasai¹, Akito Tsutsumi¹, Yuzuru Yamamoto², Horst Zwingmann¹, Andrew Todd³ (1.Graduate School of Science, Kyoto University, 2.Department of Planetology, Graduate School of Science, Kobe University, 3.CSIRO Energy, Kensington, WA, Australia)

*Mikito Furuichi¹, Jian Chen¹, Daisuke Nishiura¹, Ryuta Arai¹, Yuzuru Yamamoto², Satoshi Ide³ (1.Japan Agency for Marine-Earth Science and Technology, 2.Kobe University, 3.University of Tokyo)

*Takeru Yoshimoto¹, Yuzuru Yamamoto¹ (1.Kobe University Graduate School)

*Takeru Yoshimoto¹, Yuzuru Yamamoto¹, Michael Manga², Sarah Beethe³, Iona McIntosh⁴, Adam Woodhouse⁵, Shun Chiyonobu⁶, Olga Koukousioura⁷, Tim Druitt⁸, Steffen Kutterolf⁹, Thomas A Ronge¹⁰, IODP Exp. 398 Scientists (1.Kobe University, 2.University of California, 3.Oregon State University, 4.JAMSTEC, 5.University of Texas, 6.Akita University, 7.University of Thessaloniki, 8.Université Clermont Auvergne, 9.GEOMAR, 10.Texas A&M University)