数字海洋研究的知识图谱分析与前景展望

自数字海洋的概念提出至今，已有20年整。本文以数字海洋为关键词，检索中国知识资源总库中1999-2018年间公开发表的数字海洋研究文献，综合运用科学知识图谱分析方法，研究总结了20年内数字海洋研究的发展过程、学科参与、研究质量、演进特征等。研究结果表明：①20年来，数字海洋研究成果日益丰富，受关注度逐渐提升；②以海洋科学为中心，多学科共同融合参与；③资源类型全面，但研究质量仍需提升；④前沿热点突出，紧跟信息化潮流。在经历过快速发展阶段之后，当前的数字海洋研究已进入一个相对稳定的阶段，但在研究内容和方法技术等方面仍有探索空间和必要性。分析认为，未来的数字海洋研究应朝着全球化、应用化、精细化、智能化等方向发展，以期进入一个新的研究高潮。

Knowledge mapping analysis and outlooks of the digital ocean research

It has been 20 years since the concept of digital ocean was put forward. Based on the key words of "digital ocean", the digital ocean research literature published from 1999 to 2018 in China National Knowledge Infrastructure (CNKI) Databaseis, searched the development process, subject participation, research quality and evolution characteristics of digital ocean research in the past 20 years using the knowledge mapping methods are summarized. The results show that the achievements of digital ocean research rapid grew in the past two decades, and the level of attention has gradually increased. The participating disciplines are centered on oceanography and cover many disciplines, the types of literature are comprehensive, but the quality still needs to be improved. The research topics are obvious, that is to follow the wave of information technology closely. After experiencing the rapid development stage, the current digital ocean research has entered a relatively stable stage, but there is still space and necessity to explore in the research content, methods and technology. It is analyzed that in the future, the research of digital ocean should be developed in the direction of globalization, application, refinement and intelligence, so as to enter a new research climax.