A Research of Core Metadata for Seafloor Observatory Network

Core metadata for seafloor observatory network is the important basis for seafloor observatory data directory, which is supposed to run in the undersea observatory network system. It is also an important way to make data of ocean shared in the marine information construction of China. The paper analyzes the content of related metadata and standards at home and abroad. Combined with the features of the seafloor observatory data, based on defining principles and requirements of core metadata for seafloor observatory network, content of core metadata for seafloor observatory is determined. This paper provides the core metadata structure design using the Universal Modeling language (UML). The detail definitions of core metadata elements are given in data dictionary.