Ocean Big Data Acquiring and Integration Technologies

Abstract

Digital Earth is an integrated approach building scientific infrastructure. The ocean data is a typical big data, which can be seen from the data volume, velocity, variety, and value perspectives. The Digital Earth systems provide a three-dimensional visualization and integration platform for ocean big data, which include ocean management data, in situ observation data, remote sensing observation data and model output data. Based on the analysis on the characteristic of ocean big data, this chapter studies the ocean big data acquire and integration technology that is based on the Digital Earth system. Firstly, the construction of the Digital Earth based three-dimensional ocean big data integration environment is discussed. Then, the ocean management data integration technology is presented which is realized by general database access, web service and ActiveX control. Third, the in situ data stored in database tables as records integration is realized with a three-dimensional model of the corresponding observation apparatus display in the Digital Earth system using a same ID code. In the next two parts, the remote sensing data and the model output data integration technologies are discussed in detail. The application in the Digital Ocean Prototype System of China shows that the method can effectively improve the efficiency and visualization effect of the data.