Abstract
The potential for airborne remote sensing of chlorophyll, suspended solids and transparency in Lake Biwa was investigated with a multispectral sensor flown in August 1993 in conjunction with surveys of limnological conditions. Georectified images calibrated to radiances were produced during BITEX'93. Linear regressions of band ratios (shown as midpoints of ranges in nm) versus limnological variables were developed as follows:
475/549 = 0.419 log (transparency as Secchi depth) + 0.997
549/385 = 0.029 (suspended solids) + 0.503
549/443 = 0.291 log (chlorophyll) + 0.431.
Images of the spatial distribution of transparency, suspended solids and chlorophyll were generated for portions of the South and North basins of Lake Biwa using these regressions.
