1. Department of Earth ScienceTohoku University Sendai Japan
2. International Research Institute of Disaster ScienceTohoku University Sendai Japan
3. PANGEA Research Centre, School of Biological, Earth and Environmental SciencesUNSW Australia Sydney Australia
4. CNRS, Laboratoire Chrono‐EnvironnementUniversité de Bourgogne‐Franche‐Comté Besançon France
5. Department of Regional DesignTohoku Gakuin University Sendai Japan
6. Curatiorial DivisionMuseum of Natural and Environmental History Shizuoka Japan