Distributing proprietary geographic data on the World Wide Web: UCLA GIS database and map server
Computers & Geosciences
Cg: a system for programming graphics hardware in a C-like language
ACM SIGGRAPH 2003 Papers
Geometry clipmaps: terrain rendering using nested regular grids
ACM SIGGRAPH 2004 Papers
A web-based spatial data access system using semantic R-trees
Information Sciences—Informatics and Computer Science: An International Journal
A geoscience perspective on immersive 3D gridded data visualization
Computers & Geosciences
International Journal of Remote Sensing
Raster modelling of coastal flooding from sea-level rise
International Journal of Geographical Information Science
A dynamic global cloud layer for virtual globes
International Journal of Remote Sensing
An integrated VR–GIS navigation platform for city-region simulation
Computer Animation and Virtual Worlds
Grove Mountains meteorite recovery and relevant data distribution service
Computers & Geosciences
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The development of the VR-Ocean system coincides with the first availability of more than 15 years (1992-2009) of the merged altimeter data from up to four concurrent satellite missions (Topex/Poseidon, ERS-1 and 2, ENVISAT, Jason-1, and Geosat Follow-On) and ETOPO1 Ice Surface data (1 arc-minute global relief model of the Earth's surface that integrates land topography and ocean bathymetry). In the polar-region-oriented VR-Ocean system, the seabed and continental topography data south of 45^oS were organized in a circular area and rendered in the form of geometry clipmaps. Maps of Sea-Level Anomalies (MSLA) data for the same district were extracted and streamlined in time order. A memory-mapped file was used to accelerate file loading speed, and sea surfaces of different times were rendered in turn as a vertex buffer object (VBO) and accelerated by the graphic processing unit (GPU). As a result, roaming anywhere at any angle of view and geospatial analysis are interactively obtained and dynamically presented in real-time using the 4D VR-Ocean system. As an attempt, we did a case study on ice melting and sea-level rise around the Antarctic. This system is expected to make a significant contribution to the description, understanding, prediction, and demonstration of 4D information and properties on both regional and hemispheric scales in a virtual environment.