A GIS-based approach for geomorphological analysis of volcanic edifices to estimate latent magma plumbing system (Contract research)

Nishiyama, Nariaki  ; Goto, Akira*; Tsukahara, Yuzuko ; Kawamura, Makoto; Umeda, Koji*; Niwa, Masakazu   

Advancement of the evaluation technology of the magma activity range is essential as one of the technical issues related to volcanic and igneous activities in the evaluation of the long-term stability of the geological environment in the geological disposal of high-level radioactive waste. As an effective method, topographical analysis of volcanic edifices is expected to be used to determine the distribution area of dikes. In recent years, the development of computer-based topographic analysis technology has made it possible to simply perform a large volume of work that would otherwise be difficult due to the manual handling. This report describes an analysis method for the shape of contour lines that forms volcanic edifices using GIS software.