Estimation of Suspended Sediment Concentration from Remote Sensing and In Situ Measurement over Lake Tana, Ethiopia

Table 2

R², adjusted R², standard error, and significance F of SSC, turbidity, and SDD estimates of different regressions for various combinations of bands.

Band combinations	R^2	Adjusted R^2	Standard error	Significance F
SSC (mg/l), n = 30
Red	0.75		45.95	0.0000
NIR	0.81		25.48	0.0000
Red − NIR	0.78	0.78	33.32	0.0000
Red + NIR	0.53	0.51	89.30	0.0000
NIR/red	0.56	0.55	75.65	0.0000
NDVI (red-NIR/red + NIR)	0.54	0.52	82.39	0.0000
Turbidity (NTU), n = 27
Red	0.84		4.00	0.0000
NIR	0.85		2.80	0.0000
Red − NIR	0.85	0.84	3.25	0.0000
Red + NIR	0.65	0.64	7.75	0.0000
NIR/red	0.78	0.77	6.27	0.0000
NDVI (red-NIR/red + NIR)	0.71	0.69	7.60	0.0000
SDD (m), n = 31
Red	0.72		0.04	0.0000
NIR	0.74		0.03	0.0000
Red − NIR	0.73	0.72	0.04	0.0000
Red + NIR	0.43	0.42	0.06	0.0003
NIR/red	0.71	0.7	0.05	0.0000
NDVI (red-NIR/red + NIR)	0.70	0.69	0.04	0.0000

The band explaining the best relationship with the parameter has the highest R2 and lowest standard error, which is indicated in bold.