3:30 PM - 3:45 PM
[HRE13-01] Preliminary Note on Practical Clustering of Geo−informatics Database
Keywords:Geo−informatics Database, Claster Analysis, Landform Classification Map for Flood Control
The Kansai Geo-informatics Network (KG-NET) has been developing the Geo-informatics Database for many years in the Kansai and Shikoku regions. The number of boreholes recorded in the database has reached approximately 70,000, excluding Shikoku. Based on these databases, KG-NET has conducted surveys and research on regional geological characteristics and has published findings through seminars and books. Although the databases are accessible to members, their main functions are limited to creating cross-sections of selected boreholes and viewing various data. In examining regional characteristics, a trial-and-error approach to select and develop cross-sections from a wide array of borehole data has been taken, referencing information on surface geology and microtopography. This visualization can provide an overview of a specific depth range by simplifying the strata to support investigations using the database. In this study, a cluster analysis was performed using the original data for visualization in the Yodo River area of Osaka. One cluster of boreholes is predominantly made up of sand and gravel, while the other cluster consists mainly of clay.