Geological Data Processing in the Fields

—An example of Shirasu Disaster—

Abstract

Geology is a field science and all of its theories or principles must be based on the field evidences. Lap top type computer is a good tool for computer-aided abduction in the field geology. Slope disasters of so-called shirasu, i.e. non-welded pyroclastic flow deposits are investigated in the field with multivariate analysis, by which the main factors contributed to the slope failures can be easily selected. Therefore we can increase sufficient efficiency for field survey and get some suggestions for new idea.