FIELD MEASURIMENTS OF THE SPECTRAL RESPONSE OF NATURAL WATERS

The spectral response (air-water interface reflectance and water-volume scattering) of turbid river water (99 mg/litre suspended solids) and relatively clear lake water (10 mg/litr suspended solids) was measured in situ with a field spectroradiometer. The influence of the river bottom on the spectral response of the water also was determined by using a modified Secchi disc approach. The results indicated that turbid river water had a higher spectral response than clear lake water (approximately 6 percent) in the red (0.6 - 0.7 mu) and near-infrared (0.7 - 0.9 mu) portions of the spectrum. Also, the reflectance characteristics of the river bottom did not influence the spectral response of the turbid river water when the water was deeper than 30 cm.

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  • Corporate Authors:

    American Society of Photogrammetry

    105 North Virginia Avenue
    Falls Church, VA  USA  22046
  • Authors:
    • Bartolucci, L A
    • Robinson, B F
    • Silva, L F
  • Publication Date: 1977-5

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Filing Info

  • Accession Number: 00164060
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 9 1977 12:00AM