| MEXT |
Ministry of Education, Culture, Sports, Science and Technology |
| EDU |
National University Corporations |
| NIED |
Independent Administrative Institution,
National Research Institute for Earth Science and Disaster Prevention |
| JAMSTEC |
Independent Administrative Institution,
Japan Agency for Marine-Earth Science and Technology |
| MLIT |
Ministry of Land, Infrastructure and Transport |
| GSI |
Geographical Survey Institute |
| JMA |
Japan Meteorological Agency |
| JCG |
Hydrographic and Oceanographic Department, Japan Coast Guard |
| AIST |
Independent Administrative Institution,
National Institute of Advanced industrial Science and Technology |