Abstract
Data Research Center for Marine-Earth Science (DrC) unifies management of the observation data, samples and deep-sea images obtained from JAMSTEC research cruises and dives. In order to correctly and effectively handle these data, JAMSTEC collects a 'metadata sheet' in which onboard scientists, technical staffs and crews record the basic research information from each cruises. DrC developed a database system for comprehensive management of these metadata. JAMSTEC carries out observations on the land as well as in the ocean. These metadata from the land observations is also handled in the system. This database system, which has a user interface accessible via web browser, has functions for supporting data management staffs to carry out data dissemination activities and research information review of the past cruises and dives. This system is accessible only in DrC, because it includes confidential information. However the system plays an essential roll to keep smooth service to public data users.