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Pattern recognition of marine provinces

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The objective of this Letter is to introduce a concept for identifying marine provinces by applying two band ratios that are indicative of chlorophyll distribution patterns. The ratios of water-leaving radiances 443?nm/551?nm and 678?nm/ 667?nm are close to the two absorption bands of chlorophyll; however, as photon penetration depth at the applied wavelengths varies, each ratio responds to different depths. This allows a qualitative interpretation of separated clusters in scatter diagrams. Pattern classification separates the major biogeochemical provinces as documented with the Peruvian upwelling system and the convergence zone in the Brazil–Falkland/Malvinas current system.

Document Type: Research Article


Affiliations: The Graduate School and University Center, Earth and Environmental Center, Geography Department, Hunter College, City University of New York, 695 Park Avenue, New York, NY, 10021, USA, Email:

Publication date: April 1, 2005

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