Abstract
While many hydrological data have been collected and produced from hydrological models, the new data from the Office of Hydrologic Development, NOAA has a benefit over others in terms of high resolution both in temporal and spatial resolutions. In this work, the web-based Hydrological Visualization and Analysis System (HyVAS) is developed to help both hydrologists and local people examine and analyze this high resolution hydrological data. The HyVAS provides both temporal and spatial visualization and analysis tools. In total, there are two visualization tools and two analysis tools. Both 2D and 3D graphics have been implemented in these tools to aid users to view and to understand information hidden in the numerical data. In the first stage, this system focuses only on soil moisture visualization and analysis. Later if more data are available and more functions are needed, they can be added because this system does not depend on any environments, operating systems, or commercial software. This web-based Hydrological Visualization and Analysis System is hoped to help the hydrological community visualize and analyze data and extract useful information from the data.
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