Abstract:

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.

Key words: oceanography, co-word analysis, cluster analysis, social network analysis