中文摘要：

美国是世界上海洋大国,也是世界上的海洋经济大国。美国在20世纪70年代提出了“海洋GDP”概念。论文采用了2014年由NOEP数据库中的ENOW来源数据（2005年~20l2年）,分析了美国海洋经济发展的现状特点、发展规模、经济贡献、海洋产业结构以及海洋三次产业构成。美国海洋经济GDP（增加值）从2005年的2356.0亿美元增长到2012年的3068.98亿美元,年均增长率3.85%。论文应用了变差系数、集中化指数（基尼系数）、锡尔系数等定量方法,对美国海洋经济的现状特征与区域海洋经济的差异进行了分析。在美国沿海8个地区中,墨西哥湾地区、西部沿海地区、沿大西洋中部地区是最主要的海洋产业聚集区。文中把8个海洋经济地区,根据地理分区的理论划分为东部、南部、西部三大海洋经济区。

英文摘要：

The United States is the largest marine economic power in theworld. In the 1970s, the concept of“Marine GDP”was proposed by USA. Adoptingthe ENOW figures（2005～2012） of the NOEP database released in 2014, this paperanalyzed America maritime economy’ s current situation, development scale, eco-nomic contribution, industrial structure and its thrice industrial constitu-tion. The added value of marine GDP increased from $235.6 billion （2005） to$306.898 billion （2012）, at the average annual growth rate of 3.85%. The quan-titative methods, such as the coefficient of variation, the concentration in-dex（Gini）, the coefficient of Theil, were used to analyze the current situa-tion of American marine economy and the regional differences of marine econo-my.In eight marine economic regions of the United States, the Mexico Gulf re-gion, western coastal areas, and the region along the middle of the AtlanticOcean are the most important marine industry clusters. According to the geo-graphical division theory, eight marine economic regions were divided intoeast, south and west marine economic zones.