海洋垂直基准研究进展与展望

Progress and Prospects in Developing Marine Vertical Datum

海洋垂直基准的构建是海洋测绘的基础性工作。2009—2012年,我国初步构建了中国近岸80海里范围内高程/深度基准转换与统一模型。近年来,这一模型扩展到了我国南海、西太平洋和东印度洋,接下来将逐步构建南北极和全球的无缝垂直基准面模型,这对推动我国数字海洋建设具有基础的支撑作用。本文主要论述和梳理目前国内外主要沿海国家进行海洋垂直基准构建的研究现状,分析了海洋垂直基准构建的主要工作、途径及关键技术,重点阐述了我国在海洋垂直基准建设实践中取得的成果和存在的问题。

Marine vertical datum system construction is the basic work of marine surveying.In the 2009—2012,China has preliminarily constructed the transformation and unification of different height/depth datum model in the China Sea of 80 nautical mile.In recent years,this model has been extended to the South China Sea,the western Pacific and the eastern Indian Ocean,and then a seamless vertical datum model in the south and north pole area to the whole world gradually will be constructed in the near future,this is the foundation of supporting the digital ocean construction in China.This paper mainly discusses the research status of marine vertical datum construction which had been carried out in major coastal countries or regions,analyzes the main work and approaches and key technologies in the process of the marine vertical datum system building,and then expounds the achievements and existing problems in the practice of our country marine vertical datum building.