Assessing the application of an airborne intensified multispectral video camera to measure chlorophyll a in three Florida estuaries
- DB Environmental Labs., Inc., Rockledge, FL (United States)
- National Oceanographic and Atmospheric Adminstration, Washington, DC (United States)
After absolute and spectral calibration, an airborne intensified, multispectral video camera was field tested for water quality assessments over three Florida estuaries (Tampa Bay, Indian River Lagoon, and the St. Lucie River Estuary). Univariate regression analysis of upwelling spectral energy vs. ground-truthed uncorrected chlorophyll a (Chl a) for each estuary yielded lower coefficients of determination (R{sup 2}) with increasing concentrations of Gelbstoff within an estuary. More predictive relationships were established by adding true color as a second independent variable in a bivariate linear regression model. These regressions successfully explained most of the variation in upwelling light energy (R{sup 2}=0.94, 0.82 and 0.74 for the Tampa Bay, Indian River Lagoon, and St. Lucie estuaries, respectively). Ratioed wavelength bands within the 625-710 nm range produced the highest correlations with ground-truthed uncorrected Chl a, and were similar to those reported as being the most predictive for Chl a in Tennessee reservoirs. However, the ratioed wavebands producing the best predictive algorithms for Chl a differed among the three estuaries due to the effects of varying concentrations of Gelbstoff on upwelling spectral signatures, which precluded combining the data into a common data set for analysis.
- OSTI ID:
- 508178
- Report Number(s):
- CONF-960384-; TRN: 97:002803-0007
- Resource Relation:
- Conference: Nomadic computing and communications conference: creating a new era in mobile communications, San Jose, CA (United States), 13-15 Mar 1996; Other Information: PBD: 1997; Related Information: Is Part Of Proceedings of the fourth international conference on remote sensing for marine and coastal environments. Technology and applications: Volume II; PB: 671 p.
- Country of Publication:
- United States
- Language:
- English
Similar Records
Estuarine sedimentation along the Natal coast, South Africa
Remotely mapping river water quality using multivariate regression with prediction validation.