海口礁地貌剖面图

南沙综合科学考察队在中国科学院南海海洋研究所组织的1984—1986年对南沙调查研究基础上，继续进行了“七五”、“八五”、“九五”共11个航次、历时15年的南沙群岛及其邻近海区综合调查。完成有关南沙群岛岛礁地质、工程地质、地貌、自然地理、水道锚地与港口选址等课题的调查研究任务，多次登礁现场勘察，积累了许多资料，根据观察与实测的资料，吸收有关单位的资料，制作包括半月礁等31个无人礁体和23个有人礁体的岛礁信息产品。

The Nansha Comprehensive Scientific Expedition Team, building on the 1984–1986 Nansha survey and research organized by the South China Sea Institute of Oceanology, Chinese Academy of Sciences, conducted a 15-year comprehensive survey of the Nansha Islands and their adjacent sea areas via 11 cruises during the 7th, 8th, and 9th Five-Year Plan periods. The team completed research tasks for topics including reef geology, engineering geology, geomorphology, physical geography, waterway anchorage and port site selection of the Nansha Islands, carried out multiple on-site reef investigations, and accumulated substantial observational and measured data. Based on its own observed and measured data as well as data sourced from relevant institutions, the team compiled islet and reef information products covering 31 uninhabited reefs such as Ban Yue Reef (Half Moon Reef) and 23 inhabited reefs.