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Preliminary study of Lake Pontchartrain and vicinity using remotely sensed data from the ERTS-A satellite (1973)

Irvin, M. B. ; Smalley, A. E. ; Hidalgo, J. U. ; [et al.]

In: CASI

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Publication Date: 2019-06-27

Description: The author has identified the following significant results. During the summer of 1972, huge mats of duckweeds (Lemnaceae) appeared on Lake Pontchartrain, a shallow estuary in southeastern Louisiana. In color infrared photography, duckweeds show a characteristic light lavender color, unlike algal mats or water hyacinth, as observed in low level aerial photography. Although at least five species are present in the area, most water coverage is by Lemna minor and Spirodela oligorrhiza. ERTS-1 imagery shows many areas of bayous, swamps, and marginal waters of Lake Pontchartrain covered with duckweeds. Subsequent passes show a seasonal decreases in duckweeds.

Keywords: GEOPHYSICS

Type: E73-10613 , NASA-CR-132010

Format: application/pdf

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