Geographic Visualization

Regional Haze Visibility Impairment any humanly perceptible change in visibility (light extinction, visual range, contrast, coloration) from that which would have existed under natural conditions, caused predominantly by a combination of many sources from, and occurring over, a wide geographic area. 

Preferably, an ammonia plant is constructed at a geographical location where plenty of energy (e.g. as methane) and water are available, and where easy transport of the ammonia by ship is feasible. An ammonia plant is shown in Fig. 8.20, which produces roughly 2x1350 tons ammonia per day over 2x150 tons of catalyst. The facility is visually dominated by the two steam reforming plants, which are easily recognized. 

This site provides interactive maps, graphs (which are accessible to the blind and visually-impaired), text, tables, and figures showing geographic patterns and time trends of cancer death rates for the time period 1950-1994 for more than 40 cancers. 

Knowing the type of rock also places strong constraints upon the geographic source of the material. Obsidian can be found, for example, only in young volcanic fields and in nearby deposits derived from them. Many can further visually identify stone materials from specific sources such as the green Pachuca obsidian found at sites in the Valley of Mexico or Hixton quartzite from west central Wisconsin, found at sites in the upper Midwestern USA. However, for most stone materials, distinction of the source of the raw material requires more sophisticated laboratory analyses. 

Visualizing Data within a Geographic Information System - Maps... 

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