JAMSTEC publicly distributes samples and data obtained by JAMSTEC-AORI-JURCAOS Cooperative Research Cruises [1], as well as those by JAMSTEC private/open-call cruises, through online database (DB) websites, for additional uses with research/educational purposes. These online DBs are, from a long-term perspective, under a process of reorganization and integration: Public-level information systems for rock and sediment core samples were integrated into DARWIN DB [1] in FY2017. As for marine biological samples, whose information has been mainly distributed through “Marine Biological Sample DB [3], a part of information is already shared with DARWIN to utilize its search/map functions. DB integration is in progress for not only public-level but also management-level information system, which are operated by sample holders responsible for storage of physical samples. In FY2018, JSDB (JAMSTEC Sample Management Database) is installed for the management of JAMSTEC rock, sediment core and biological samples, and actual data was transferred into this new system in FY2019. For rock and sediment core samples, information forwarding from management-level system (JSDB) to public-level system (DARWIN) is planned to be established in the near future. JSDB consists of data tables for sample matadata information for onboard sampling activities, sample archive information for status and storage of physical samples, associate data information for various data obtained for samples, literature information for published documents, sample distribution information for service logs for sample requests. User authorization includes group setting, enabling individual sample holders outside Data Management Office to read, create and modify the information in an appropriate manner, although the DB is only accessible from inside JAMSTEC because of security reasons. Associate data information is supposed to include various data types, such as photos/images, text-based descriptions, spread-sheets and URLs etc., and open/close status control and group-setting are available for individual entries. Information for research proposals/projects or other data management issues, which should be associated with multiple samples, can also be managed as associated data information. For the future possibility of involvement with IGSN, sample metadata entries and their vocabulary are reorganized to follow the IGSN Descriptive Metadata [4], as much as possible. Peoples involved in sample and data management tend to spend much effort for dealing with unusual conditions/situations which are not originally expected. Robustness is important for design/operation of information systems, because lack of flexibility and too much complexity of information systems are frequent causes of such kind of problems. [1] https://www.aori.u-tokyo.ac.jp/coop/ [2] http://www.godac.jamstec.go.jp/darwin/ [3] http://www.godac.jamstec.go.jp/bio-sample/ [4] https://www.geosamples.org/metadata

Japan Agency for Marine-Earth Science and Technology (JAMSTEC) has been disseminated information of data and samples obtained by JAMSTEC’s research vessels and submersibles via some databases. The core database is the Data and Sample Research System for Whole Cruise Information (DARWIN, http://www.godac.jamstec.go.jp/darwin/e). DARWIN provides information of more than 2000 cruises and 6500 dives, and its related observation data and geological sample. Each cruise or dive information page of DARWIN has links to related contents such as biological sample, deep-sea image, cruise report and data book provided by another databases. In this poster, we will introduce some examples of efforts to improve the reusability of data and sample described above. - Assignment of Digital Object Identifier (DOI): DOIs have been assigned to more than 2000 research cruises information from the early 1980s onward to promote data citation. A granularity of DOI is a research cruise information page defined as a cruise ID at this time. - Specification of Data Policy: DARWIN has been treated data and samples based on only JAMSTEC data policy until FY2018’s research cruises. Currently, the applicable policy is dependent on type of cruise because the cooperative research cruises have been started since FY2019. DARWIN has been updated to display of an applicable policy on each information page clearly. The function is also available to add to another policy in the future. - Data Rescue: A cruise report is a prompt report that includes the purpose of the cruise, information about what kind of observation was done, how it was done and the results. Cruise reports for past research cruises have been found when moving laboratory and submitted to the Data Management Group. The reports have been scanned and saved as individual PDF to store for long-term and prepare for publication. A part of them with Principle Investigators’ consent have been disseminated step by step.