基于SCI-E的2010—2014年美国海洋学研究热点分析

ANALYSIS OF RESEARCH HOTSPOTS IN OCEANOGRAPHY OF THE UNITED STATES BASED ON SCIENCE CITATION INDEX EXPANDED FROM 2010 TO 2014

基于科学引文索引数据库SCI-E,检索获得2010—2014年美国海洋学研究型文献9 702篇,在确定文献集中词频不低于40的54个高频关键词基础上,运用共词分析法,以SPSS 20.0为工具,探索美国近5年海洋学研究热点。结果表明,2010—2014年间美国海洋学研究热点集中在6大主题领域:海洋环流动力学研究、海洋灾害研究、科学技术和方法在海洋中的应用研究、海洋初级生产力研究、海洋污染研究、海洋生物多样性研究。在此基础上,运用社会网络分析法,借助可视化工具Ucinet,对6大研究主题和高频作者共现矩阵进行可视化,揭示出各研究主题的作者团体。

Based on SCI-E, we collated details of almost all documents regarding oceanography published in the United States from 2010 to 2014. By analyzing the co-occurrence frequency of 54 high-frequency keywords using SPSS software and a cluster analysis method, this study revealed the six oceanographic research hotspots of the United States from 2010 to 2014： ocean circulation dynamics, ocean disasters, application of science and technology methods in oceanography, ocean primary productivity, ocean pollution, and ocean biodiversity. Furthermore, a visualization map was constructed of the co-occurrence matrix of research hotpots and high-frequency author names, based on social network analysis, to identify the groups of authors associated with these research topics.