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Lineaments that are artifacts of lighting, part GApollo 15 orbital photographs, particularly those taken at low sun elevation angles, are examined revealing grid patterns of lineaments. Preliminary results of experiments demonstrate that spurious lineaments and grid patterns can be produced and that the directions are dependent in part upon the position of the light source. The experiments were designed to duplicate the effect of bright sunlight reflecting from a hummocky surface with little or no diffuse light in the shadowed areas.
Document ID
19720015195
Document Type
Other
Authors
Howard, K. A. (Geological Survey Washington, DC, United States)
Larsen, B. R. (Geological Survey Washington, DC, United States)
Date Acquired
August 6, 2013
Publication Date
January 1, 1972
Publication Information
Publication: NASA. Manned Spacecraft Center Apollo 15 Prelim. Sci. Rept.
Subject Category
SPACE SCIENCES
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19720015164Analytic PrimaryApollo 15 Preliminary Science ReportN72-22814 13-30Analytic Primary
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