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Three-dimensional (3D) urban geological models (3DUGMS) are a very important support for urban planning, construction and management, for they can reduce the blindness in geological cognition and the huge risk in underground engineering design and construction with the representation of spatial structure and relationships of geological objects and phenomena. This paper firstly divides the data in...
A 4-month data set was used to investigate historical changes between the number of the Cyanobacteria and concentrations of total nitrogen (TN), total phosphorus (TP), TN:TP, chemical oxygen dawdling (COD), NO3, pH and Chl-a in a shallow temperate zone lake (Guishui Lake, Beijing, China). The aim was to evaluate changes in the risk of Cyanobacteria blooms, which have occurred several times in the...
Atmospheric corrected Landsat Enhanced Thematic Mapper Plus (ETM+) near-infrared (NIR) and shortwave infrared (SWIR) band reflectances are used to develop a new index to monitor vegetation water content (VWC) in terms of equivalent water thickness (EWT, cm). This paper outlines the first part of a research program to investigate the potential and physical basis of wavelengths in the optical domain...
The flow simulation in virtual reality can make invisible flow phenomena existing in nature visible in three-dimension scene. It can aid researchers to observe, comprehend and analyze the natural phenomena. The architecture based-VR presented in this paper has been designed to make flow simulation easy and universal. A spatial class hierarchy is proposed to extract the abstract objects from flow phenomena...
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