日本全国地形・地盤分類メッシュマップ構築のための既存データ収集と問題点

概要

論文の詳細を見る
We constructed a GIS-based digital map named Japan Engineering Geomorphological Land Classification Map (JEGM) that covers all over Japan with unified category, consisting of a total of approximately 380, 000 grid cells of c. 1 * 1 km each in size. For constructing the JEGM, we had been referred various kind of geomorphologic maps, geologic maps, reports and papers. This paper examines source data and maps for constructing the JEGM, and presents some problems in the existing maps such as the geomorphologic database that included the Digital National Land Information of National Land Agency. For example, the geomorphologic database in the National Land Information has problems in land classification criteria that are not unified over all prefectures. It was compiled from separate geomorphological maps of 1 : 200, 000 prepared by each prefecture in 1970s.
早稲田大学の論文
2004-03-30