Spectral analysis of an AVIRIS image of San Pedro Channel

Curtiss O. Davis; Michael K. Hamilton; W. Joseph Rhea; Jeannette M. van den Bosch; Kendall L. Carder; Robert G. Steward

doi:10.1117/12.157070

23 September 1993 Spectral analysis of an AVIRIS image of San Pedro Channel

Curtiss O. Davis, Michael K. Hamilton, W. Joseph Rhea, Jeannette M. van den Bosch, Kendall L. Carder, Robert G. Steward

Proceedings Volume 1937, Imaging Spectrometry of the Terrestrial Environment; (1993) https://doi.org/10.1117/12.157070
Event: Optical Engineering and Photonics in Aerospace Sensing, 1993, Orlando, FL, United States

Abstract

Optical case-2 waters near an ocean outfall were examined, using a combination of AVIRIS imagery and ship-based surface and profile bio-optical measurements. Bio-optical mooring data were useful in determining the hydrodynamics of the area. After correcting the image to units of water-leaving radiance (L_w), excellent agreement was achieved between remotely-sensed and in- situ measurements. Spectra from visibly different areas were extracted and compared to the in-water measurements and to each other. Near-shore spectra were dominated by the presence of suspended sediment from beach erosion. Spectra from the central part of the image had a characteristic signature from particulates from either the outfall or resuspension of bottom material or both. At the offshore edge of the image elevated levels of chlorophyll had the greatest influence on spectral shape. Backscatter at 660 nm was calculated from the AVIRIS data and a backscatter image was produced which clearly showed the distribution of the two types of sediments.

Citation Download Citation

Curtiss O. Davis, Michael K. Hamilton, W. Joseph Rhea, Jeannette M. van den Bosch, Kendall L. Carder, and Robert G. Steward "Spectral analysis of an AVIRIS image of San Pedro Channel", Proc. SPIE 1937, Imaging Spectrometry of the Terrestrial Environment, (23 September 1993); https://doi.org/10.1117/12.157070

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