Light-Scattering Measurements and Chemical Analysis of Suspended Matter in the Near-Bottom Nepheloid Layer of the Gulf of Mexico

  • Richard A. Feely
  • Lawrence Sullivan
  • William M. Sackett
Part of the Marine Science book series (MR, volume 4)


The mass and chemical composition of suspended material in three near-bottom profiles in the Gulf of Mexico and in one profile in the Caribbean show a definite relationship to light scattering as measured by an Ewing-Thorndike nephelometer. For the Gulf of Mexico profiles, an increase in light scattering from about 300–700 above the bottom indicates a near-bottom nepheloid layer. In this layer, at about 100–200 m above the bottom, the concentrations of particulate aluminum, silicon, iron and organic carbon generally increased from 2 to 6 times over their respective concentrations at mid-depth. Constant and low light-scattering values and suspended matter concentrations at one station indicate that no near-bottom nepheloid layer is found in the Yucatan Basin of the Caribbean.


Particulate Organic Matter Particulate Organic Carbon Particulate Aluminum Particulate Iron Suspended Material 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Plenum Press, New York 1974

Authors and Affiliations

  • Richard A. Feely
    • 1
    • 2
  • Lawrence Sullivan
    • 1
    • 2
  • William M. Sackett
    • 1
    • 2
  1. 1.Texas A&M UniversityUSA
  2. 2.Lamont-Doherty Geological ObservatoryTexas A&M UniversityUSA

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