[S-VC44] Mitigation of volcanic disasters - basic and applied researches

[SVC44-P10] Measurement of outer crater rim displacement associated with the formation of Usu Shinzan, a key factor in the debris flows that followed the 1977 eruption of Mt. Usu, using topographical data from aerial photographs taken at the time

*Takeshi Shimizu¹ (1. The National Research and Development Agency Public Works Research Institute)

Keywords:the 1977 Eruption of Usu Volcano, debris flow, hyperconcentrated flow, volcanic inflation