Four-band multispectral photography, obtained from an aerial platform at an altitude of about 10,000 feet, has been utilized to measure near-surface turbidity at numerous sampling sites in the Ross Barnett Reservoir, Mississippi. Correlation of the composited photographs with turbidity measurements has been accomplished via an empirical mathematical model which depends upon visual color recognition when the composited photographs are examined on either an I2S model 600 or a Spectral Data model 65 color-additive viewer. The mathematical model was developed utilizing least-squares, iterative, and standard statistical methods and includes a time-dependent term related to sun angle. This model is consistent with information obtained from two overflights of the target area-July 30, 1973 and October 30, 1973-and now is being evaluated with regard to information obtained from a third overflight, on November 8, 1974.

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  • Corporate Authors:

    American Society of Photogrammetry

    105 North Virginia Avenue
    Falls Church, VA  United States  22046
  • Authors:
    • Wertz, D L
    • Mealor, W T
    • Steele, M L
    • Pinson, J W
  • Publication Date: 1976-5

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Filing Info

  • Accession Number: 00139267
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Sep 16 1976 12:00AM