NTRS - NASA Technical Reports Server

Back to Results
Application of ERTS imagery in estimating the environmental impact of a freeway through the Knysna area of South AfricaIn the coastal areas north-east and south-west of Knysna, South Africa lie natural forests, lakes and lagoons highly regarded by many for their aesthetic and ecological richness. A freeway construction project has given rise to fears of the degradation or destruction of these natural features. The possibility was investigated of using ERTS imagery to estimate the environmental impact of the freeway and found that: (1) All threatened features could readily be identified on the imagery. (2) It was possible within a short time to provide an area estimate of damage to indigenous forest. (3) In several important respects the imagery has advantages over maps and aerial photos for this type of work. (4) The imagery will enable monitoring of the actual environmental impact of the freeway when completed.
Document ID
Document Type
Conference Paper
Williamson, D. T. (Spectral Africa (Proprietary) Ltd. Randfontein, South Africa)
Gilbertson, B. (Spectral Africa (Proprietary) Ltd. Randfontein, South Africa)
Date Acquired
August 7, 2013
Publication Date
January 1, 1974
Publication Information
Publication: NASA. Goddard Space Flight Center 3d ERTS-1 Symp., Vol. 1, Sect. B
Subject Category
Report/Patent Number
Distribution Limits
Work of the US Gov. Public Use Permitted.

Related Records

IDRelationTitle19740022661Analytic PrimaryThird Earth Resources Technology Satellite-1 Symposium. Volume 1: Technical presentations, section B
Document Inquiry