• INTERPRAEVENT International Symposium 2014 Natural Disaster Mitigation to Establish Society with the Resilience (Nara)
• International symposium on sediment disasters under the influence of climate change and tectonic activity (3nd, Kyoto)
• International symposium on sediment disasters under the influence of climate change and tectonic activity (2nd, Sapporo)
• INTERPRAEVENT International Symposium 2006 Disaster Mitigation of Debris Flows, Slope Failures and Landslides (Niigata)
• International Sabo Symposium on Utilization of Disaster Information -Organaizing and Sharing Disaster Information in Asian Country (Hiroshima)