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Assessment of Some Suggested Algorithms on Sea Colour and Surface Chlorophyll

  • N. K. Hojerslev
Part of the Marine Science book series (MR, volume 13)

Abstract

The feasibility for converting intrinsic colour measurements of the sea into concentration of surface chlorophyll a, as well as into depths of the euphotic zone, is outlined.

This indirect determination of surface chlorophyll a concentration has a potential in oceanic areas because here the amount of yellow substance is small and only slightly variable in space and time. Moreover, the concentration of chlorophyll a and suspended matter are here interrelated.

In coastal waters, however, indirect determinations of chlorophyll a are performed with difficulty for two main reasons. Firstly, the amounts of yellow substance are often high and variable, especially at higher latitudes in the temperate climate. Secondly, chlorophyll a and yellow substance is only slightly correlated with suspended matter, especially if resuspension of bottom sediments is a dominant feature.

However, for a large variety of oceanic and coastal waters having different optical characteristics, colour measurements of the sea lead to satisfactory estimations of the depths of the euphotic zone.

Keywords

Suspended Matter Colour Index Euphotic Zone Secchi Disc Suggested Algorithm 
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 1981

Authors and Affiliations

  • N. K. Hojerslev
    • 1
  1. 1.Institute of Physical OceanographyUniversity of CopenhagenCopenhagenDenmark

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