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<br />2-34 <br /> <br />GLOSSARY <br /> <br />e <br /> <br />1. BACKGROUND is the viewshed zone most distant from the viewer. <br />Details are not seen in this zone. The horizon line is prominent <br />in this zone as are general form, colors, and textures. <br /> <br />2. FOREGROUND is the viewshed z.one nearest the viewer. It is <br />the zone in which details, such as construction joints, movement <br />of water and the finish of earth grading, are visible. <br /> <br />3. MIDDLEGROUND is the viewshed zone between the back and <br />foreground. Some details can be seen in this zone but only those <br />which are in sharp contrast visually. <br /> <br />4. VIEWSHED is the zone of view or volume in a given direction as <br />seen from a specific viewpoint. <br /> <br />5. VISUAL RESOURCE is the appearance of the landscape as described <br />by the measurable visual elements; topography, vegetation, water, <br />and human structures and patterns, and by the measurable patterns <br />of interaction among these elements. <br /> <br />6. VISUAL RESOURCE VALUE is the relative desirability of a visual <br />resource unit as evaluated by rational criteria. <br /> <br />e <br /> <br />REFERENCES <br /> <br />Litton, R. Burton, and Robert J. Tetlow, 1974, Water and Landscape: <br />An Aesthetic Overview of the Role of Water in the Landscape, <br />Water Information Center, Inc., Port Washington, New York. <br /> <br />Pitt, David G., 1976, "Physical Dimensions of Scenic Quality in Streams" <br />in Studies in Landscape Perception, Zube, editor, Amherst, <br />Massachusetts, March. <br /> <br />Jones, Grant R., 1973, The Noosack Plan, Seattle, Washington, May. <br /> <br />e <br />