日本周辺の500mメッシュ海底地形データとビジュアル編集プログラム

抄録

A new quality-controlled bathymetry mesh dataset (mesh size=500m) around Japan was created based on enormous sounding data. The new dataset includes recent multi-beam survey results and old survey results were also edited and compiled together. The dataset is now provided for academic users from JODC (Japan Oceanographic Data Center).
In order to create and to edit mesh data efficiently, we developed a visual edit program. The program helps us to delineate erroneous data and to make adequate interpolation, which was very difficult in previous processing software.