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Application of satellite remote sensing to North Carolina. Development of a monitoring methodology for trophic states of lakes in North CarolinaConjunctive study of four shallow coastal plain lakes in northeastern North Carolina and their LANDSAT-2 images demonstrates that it is possible to differentiate between the lakes and their respective trophic states on the basis of the multispectral scanner imagery. The year-long investigation established that monitoring of the trophic states of the lakes on a seasonal basis through application of color additive imagery enchancement techniques is possible. Utilizing a standard setting of the color additive viewer, an investigator can normalize the imagery to an internal standard of constant reflectance characteristics. By comparison of the false color renditions with a standard interference color chart combined with brightness measurements made on the viewer screen, one can relate the lake reflectances to their trophic states. Two or more bands of the imagery are required, and the present study established that for the lakes studied, Band 5 and Band 6 form a good combination.
Document ID
19770026646
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Welby, C. W. (North Carolina State Univ. Raleigh, NC, United States)
Holman, R. E. (North Carolina State Univ. Raleigh, NC, United States)
Date Acquired
September 3, 2013
Publication Date
August 1, 1977
Subject Category
Earth Resources And Remote Sensing
Report/Patent Number
NASA-CR-150419
Accession Number
77N33590
Funding Number(s)
CONTRACT_GRANT: NAS8-31984
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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