Visibility Maps by Field Sketching
Abstract:The value of lookout stations as primary detection systems is well enough appreciated but often too little is known of their individual or collective visibility efficiency. Without an investigation of the area actually and directly visible, selection of lookout stations cannot be intelligently made, and the effectiveness of an existing system may be overrated. The author discusses the effectiveness of lookouts, shows how a visibility survey can be conducted, and compares the several methods. Where topographic maps are not available he finds direct field sketching to yield very satisfactory visibility maps at low cost.
Document Type: Journal Article
Affiliations: Associate Civil Engineer, U. S. Forest Service, Ogden, Utah
Publication date: April 1, 1931
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- The Journal of Forestry is the most widely circulated scholarly forestry journal in the world. In print since 1902, the Journal has received several national awards for excellence. The mission of the Journal of Forestry is to advance the profession of forestry by keeping forest management professionals informed about significant developments and ideas in the many facets of forestry: economics, education and communication, entomology and pathology, fire, forest ecology, geospatial technologies, history, international forestry, measurements, policy, recreation, silviculture, social sciences, soils and hydrology, urban and community forestry, utilization and engineering, and wildlife management. The Journal is published bimonthly: January, March, May, July, September, and November.
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