2023 Volume 74 Issue 3 Pages 133-153
The cumulative volume step-diagram for eruptive magmas of Towada Volcano was prepared. The eruptive volume and age data were compiled from previous studies, and the deficiencies were supplemented in this report. Specifically, each eruptive volume and age of the distal tephras from the precaldera to the early caldera-forming stage was estimated using the author's original stratigraphic data and the isopach maps by previous research. This report shows the dataset for the cumulative volume stepdiagram for eruptive magmas of Towada Volcano and describes the precautions to be paid when using this dataset and the future tasks for improving this diagram.
