1. Ocean Floor Observatory Technology Development Group, Research and Development Center for Earthquake and Tsunami (CEAT), Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
2. Marine Geology and Geophysics Group, Research and Development Center for Earthquake and Tsunami (CEAT), Japan Agency for Marine-Earth Science and Technology (JAMSTEC)
3. Marine Science Department, Nippon Marine Enterprises, Ltd. (NME)
4. Division of Mineral Sciences, Department of Geology and Paleontology, National Museum of Nature and Science