1. Name of Database: Jovian Decametric Radio Wave Data 2. Institution: Graduate School of Science, Tohoku University 3. Contents of Database: The on-line database contains the occurrence list of Jovian decametric radio waves from 19MHz to 24MHz observed at Jovian decametric radio wave observatory of Tohoku University since 1974. The data are offered in a text format. 4. Examples of Database: The appearance distribution of Jovian Decametric Radio 5. Contact: Department of Geophysics, Graduate School of Science Tohoku University Akarami Aoba, Aoba-ku, Sendai 980-8578, Japan Takayuki Ono TEL:022-217-6514 FAX:022-217-6517 EMAIL: ono[AT]stpp1.geophys.tohoky.ac.jp 6. Public Offering of Database: